Auxiliary adsorption seed pattern drill

Abstract

An auxiliary adsorption type hole seeder relates to the technical field of agricultural machinery, and comprises a front shell, a front fixed disc, a seed plate, a rear baffle, a duckbill ring frame, a rear fixed disc and a gas pipe shaft, wherein the front shell is a disc with a port, is fixedly sleeved on the gas pipe shaft, the rear baffle is rotatably sleeved on the gas pipe shaft, the front fixed disc is rotatably coaxially sleeved on the front shell, the rear fixed disc is coaxially sleeved on the rear baffle, and the duckbill ring frame with a duckbill is clamped between the front fixed disc and the rear fixed disc, a device shell is assembled, the seed plate fixedly connected with the rear baffle is sleeved on the gas pipe shaft in the device, and a plurality of guide and suction nozzles with guide and tooth adjustment are arranged in a circular interval on one side of the seed plate close to the front shell and can screen and suck seeds to the duckbill; the guide and suction nozzle parallel to the rotating direction of the seed plate is arranged on the seed plate of the application and is used for adsorbing seeds, compared with the traditional hole seeder using the seed plate to adsorb seeds, the adsorption and screening performance of the hole seeder is improved, and the seeding effect is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to an auxiliary adsorption seed-seeding device. Background Technology

[0002] The air-suction seed metering device is a device that selects and adsorbs seeds to a designated location for sowing. It can effectively separate individual seeds and accurately sow them into the soil according to preset plant spacing and depth. It has the advantages of low missed sowing and reseeding rates and can effectively reduce seed breakage. When combined with hole-making equipment, it can realize the integration of seed selection and sowing, which can significantly improve the automation level of sowing operations and has a high degree of controllability. It is conducive to integrating it into the smart agriculture system that is currently being developed.

[0003] However, when sowing irregularly shaped seeds, traditional air suction seed metering devices are prone to problems such as unstable adsorption posture, multiple adsorption, or missed adsorption due to the flatness of the seeds, the offset of the center of gravity, and the small surface contact area. This results in uneven seed metering intervals and reduced sowing accuracy. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide an auxiliary adsorption seed planter, which is equipped with a guide suction nozzle with guide teeth to adjust the position and adsorb the seeds. During seed planting, it effectively enhances the support and adsorption stability of the seeds, and achieves efficient and precise seed transport.

[0005] To solve at least one of the above-mentioned technical problems, the technical solution provided by the present invention is:

[0006] An auxiliary adsorption-type seed planter includes a front shell, a front fixing plate, a seed metering plate, a rear baffle, a duckbill ring frame, a rear fixing plate, and an air tube shaft, wherein...

[0007] The front housing is a disc with a seed inlet. The seed inlet is provided with a seed feeding hopper facing outwards from the seed metering device. It is fixedly sleeved on a cylindrical air pipe shaft. A rotatable disc-shaped rear baffle is sleeved on the side of the air pipe shaft away from the front housing.

[0008] Both the front and rear fixed plates are annular plate structures. The front fixed plate is rotatably and coaxially sleeved on the front housing, and the rear fixed plate is coaxially sleeved on the rear baffle. A duckbill ring frame is detachably and coaxially clamped between the front and rear fixed plates, so that the front housing, the front fixed plate, the rear baffle, the duckbill ring frame, and the rear fixed plate can form a circular sealed container with the tracheal shaft extending into it as the central axis.

[0009] A seed metering disc is fitted onto the air tube shaft inside the sealed container. The seed metering disc is detachably and fixedly connected to the rear baffle. Multiple sets of guide suction nozzles are provided on the side of the seed metering disc near the front shell. The guide suction nozzles are cylindrical structures with their middle parts connected to the other side of the seed metering disc. Multiple sets of oblique conical guide teeth with their bottom surfaces in parallel contact with the surface of the seed metering disc are detachably provided on the side surface of the guide suction nozzles. The guide suction nozzles are distributed at intervals in a circular shape, and the tips of the guide teeth point in the same direction as the rotation of the circular ring containing the guide suction nozzle. When the side of the seed metering disc without guide suction nozzles is kept under negative pressure and the seed metering disc rotates, the seed metering disc can deliver the seeds that have been put into the sealed container through the front shell to the beak of the beak ring frame through the guide suction nozzles.

[0010] In one embodiment of the present invention, the front housing is provided with a seed receiving plate and a seed receiving wall adjacent to the seed receiving plate on the side close to the seed receiving plate, wherein the seed receiving plate and the seed receiving wall form a "V" shaped structure, the low point of the "V" shaped structure is located below the seed inlet, the seed receiving plate is provided with a seed receiving plate through hole that allows the guide suction nozzle to pass through, and a through hole brush is provided in the seed receiving plate through hole.

[0011] The front shell is provided with a seed outlet, which is located below the seed receiving plate.

[0012] Furthermore, the front housing is also provided with a seed brush and a seed sieve block on the side near the seed metering tray. The ring where the guide suction nozzle is located can pass through the through hole of the seed receiving plate and the seed brush. The seed sieve block is adjacent to the ring where the guide suction nozzle is located and can sieve away the excess seeds adsorbed on the guide suction nozzle.

[0013] Furthermore, the distance between the seed-bearing plate and the seed-bearing wall and the seed-dispensing tray is no more than 0.5 mm.

[0014] One embodiment of the present invention is that the guide teeth provided on the guide suction nozzle are evenly distributed on the side surface of the guide suction nozzle, and the tips of the guide teeth point to the rotation direction of the ring where the guide suction nozzle is located and the angle is adjustable.

[0015] The inner surface of the guide suction nozzle, which is away from the seed metering disc, is also provided with an inwardly inclined surface.

[0016] One embodiment of the present invention is that the included angle between adjacent guide teeth is in the range of 3~5°;

[0017] The height of a single guide tooth above the surface of the seed metering disc is 1.5~2.5mm;

[0018] The angle between a single guide tooth and the inclined plane of the seed metering disc ranges from 7 to 9 degrees.

[0019] In one embodiment of the present invention, a seed metering tray limiting frame is detachably fixedly provided on the side of the rear baffle near the seed metering tray, wherein the seed metering tray limiting frame is a plurality of intermittently convex rings pointing to the center, and the seed metering tray is coaxially engaged between the seed metering tray limiting frame and the rear baffle.

[0020] Furthermore, an air chamber block is fixedly installed on the air pipe shaft between the rear baffle and the seed metering tray. The air chamber block is located between the seed receiving plate and the seed brush. It can contact the surface of the seed metering tray on the side without the guide suction nozzle, and the ring where the guide suction nozzle is located can pass through the air chamber block.

[0021] Furthermore, the duckbill ring frame has multiple sets of duckbill rings spaced apart on its side surface, and the inlet of the duckbill can communicate with the seed outlet.

[0022] One embodiment of the present invention is that the air tube shaft is a hollow shaft, and a through hole is provided in the part between the seed metering disc and the rear baffle.

[0023] The technical effects achieved by this invention are:

[0024] 1. The seed metering disc of the present invention is provided with an adsorption port parallel to the rotation direction of the seed metering disc for adsorbing seeds. The adsorption port is provided with guide adjustment teeth that can efficiently guide the target seeds in the population away from the population and guide the adsorption hole. During this process, the seed posture can also be adjusted by the inner inclined surface, thereby effectively optimizing the stress state of the seeds in key links such as seed filling and seed cleaning, significantly improving the adsorption and seed selection performance of the seed metering device, enabling the seed metering device to effectively adsorb irregularly shaped seeds and expanding the application range of the seed metering device.

[0025] 2. The seed metering device in this invention is equipped with a duckbill structure, which can roll and create holes in the soil for sowing while metering seeds, realizing the integration of metering and sowing. Combined with the efficient seed selection function of the seed metering device, it can achieve precise control of sowing operations, which is conducive to its integration into the agricultural intelligent control system, and can effectively improve sowing efficiency and sowing accuracy. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is an isometric view of the overall device in this invention;

[0028] Figure 2 This is an exploded view of the overall device in this invention;

[0029] Figure 3 This is a schematic diagram of the back side of the front housing in this invention;

[0030] Figure 4 This is an isometric view of the seed metering disc in this invention;

[0031] Figure 5 This is an isometric view of the guide suction nozzle in this invention;

[0032] Figure 6 This is a schematic diagram of the device for removing the front housing in this invention;

[0033] Figure 7 This is a schematic diagram showing the positions of the duckbill ring frame, the rear baffle, and the seed metering tray limiting frame in this invention;

[0034] Figure 8 This is an isometric view of the duckbill ring frame in this invention;

[0035] Figure 9 This is a schematic diagram showing the division of the seed supply area within this invention;

[0036] Figure 10 This is a top view of the guide suction nozzle in this invention;

[0037] Figure 11 This is a side view of the guide suction nozzle in this invention;

[0038] In the diagram, 100-seed inlet hopper, 200-front shell, 201-seed inlet, 202-seed receiving plate, 203-seed receiving plate through hole, 204-through hole brush, 205-seed receiving wall, 206-seed brush, 207-seed sieve block, 208-seed outlet, 300-front fixed plate, 400-seed metering plate, 401-guide suction nozzle, 402-guide adjustment teeth, 403-inner inclined surface, 500-seed metering plate limiting frame, 600-rear baffle, 601-air chamber baffle, 700-duckbill ring frame, 701-duckbill, 800-rear fixed plate, 900-air tube shaft, a-seed filling area, b-seed cleaning area, c-seed carrying area, d-seed unloading area, α-angle between adjacent guide adjustment teeth, β-angle between guide adjustment teeth and the surface of the seed metering plate, h-height of guide adjustment teeth relative to the surface of the seed metering plate. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0041] Example:

[0042] See Figure 1 , Figure 2 An auxiliary adsorption-type seed planter includes a front housing 200, a front fixing plate 300, a seed metering plate 400, a rear baffle 600, a duckbill ring frame 700, a rear fixing plate 800, and an air tube shaft 900, wherein...

[0043] The front housing 200 is a disc with a seed inlet 201 on its surface, which is fixedly sleeved on the tubular air shaft 900. In some embodiments, a seed inlet hopper 100 facing the outside of the seed metering device is provided at the seed inlet 201, so that the seeds can be quickly introduced into the seed metering device by the seed inlet hopper 100.

[0044] A rotatable disc-shaped rear baffle 600 is fitted onto the side of the tracheal shaft 900 away from the front housing 200. The tracheal shaft 900 is a fixed shaft, its functions including supplying air and supporting rotation. Relative to the front housing 200, which is fixed to the tracheal shaft 900 and cannot rotate, it is combined with... Figure 7 As can be seen, the rear baffle 600 is located at the farthest end of the tracheal shaft 900 and can rotate around the tracheal shaft 900.

[0045] Both the front fixed plate 300 and the rear fixed plate 800 are annular plate structures. The front fixed plate 300 is rotatably and coaxially sleeved on the front housing 200, and the rear fixed plate 800 is coaxially sleeved on the rear baffle 600. A duckbill ring frame 700 is detachably and coaxially clamped between the front fixed plate 300 and the rear fixed plate 800, allowing the front housing 200, front fixed plate 300, rear baffle 600, duckbill ring frame 700, and rear fixed plate 800 to form a circular sealed container with a tracheal shaft 900 extending into it as the central axis. Simultaneously, combined with... Figure 8As can be seen, when the seed metering device moves on the ground, the duckbill 701 on the duckbill ring frame 700 is affected by the contact force of the ground, which will drive the duckbill ring frame 700, the front fixed plate 300, and the rear fixed plate 800 to rotate synchronously. The rear baffle 600 will also rotate synchronously under the drive of the rear fixed plate 800. The structure and functional implementation of the duckbill 701 can refer to the existing technology and are not particularly limited here.

[0046] See Figure 4 , 6 Inside the sealed container, a seed metering disc 400 is fitted onto the air tube shaft 900. The seed metering disc 400 is detachably and fixedly connected to the rear baffle 600. The fixing method is mainly implemented by a seed metering disc limiting frame 500 that is detachably fixed on one side near the seed metering disc 400. The seed metering disc limiting frame 500 is a set of intermittently convex rings pointing to the center. It can be connected and fixed to the rear baffle 600 by bolts or other means, so that the seed metering disc 400 is coaxially locked between the seed metering disc limiting frame 500 and the rear baffle 600. As can be seen from the above, when the rear baffle 600 rotates, the seed metering disc limiting frame 500 and the seed metering disc 400 will also rotate synchronously, thereby providing power for the rotation and seed selection of the seed metering disc 400.

[0047] See Figure 3 The front housing 200 has a seed-bearing plate 202 and a seed-bearing wall 205 adjacent to the seed-bearing tray 400 on the side close to the seed-bearing tray 400. Preferably, the seed-bearing plate 202 and the seed-bearing wall 205 should be as close as possible to the seed-bearing tray 400 without affecting the normal rotation of the seed-bearing tray 400. Therefore, the distance between the seed-bearing plate 202 and the seed-bearing wall 205 and the seed-bearing tray 400 is controlled within 0.5mm.

[0048] In the front shell 200, the seed-bearing plate 202 and the seed-bearing wall 205 form a "V" shaped structure. The lowest point of the "V" shaped structure is located below the seed inlet 201. Since the seed-bearing plate 202 and the seed-bearing wall 205 are close enough to the seed metering tray 400, it can be seen that the seed-bearing plate 202, the seed-bearing wall 205, and the seed metering tray 400 actually form a "V" shaped container. The seeds introduced from the seed inlet 201 will be temporarily stored in this "V" shaped container. As the seed metering tray 400 rotates, the seeds in the "V" shaped container will also be removed from the container by the seed selection structure.

[0049] Combination Figure 4 , Figure 5As can be seen, the seed metering tray 400 is provided with multiple sets of guide suction nozzles 401 on the side near the front shell 200, which are capable of air-suction screening of seeds. The guide suction nozzles 401 are cylindrical structures, with their middle parts connected to the other side of the seed metering tray 400. The side surface of the guide suction nozzles 401 is detachably provided with multiple sets of oblique cone guide teeth 402 whose bottom surfaces are in parallel contact with the surface of the seed metering tray 400. The guide suction nozzles 401 are distributed in a ring-like pattern at intervals, and the tips of the guide teeth 402 point in the same direction of rotation as the ring on which the guide suction nozzles 401 are located. When the side of the seed metering tray 400 without guide suction nozzles 401 is kept under negative pressure and the seed metering tray 400 is rotated, the seed metering tray 400 can deliver the seeds that have been put into the sealed container through the front shell 200 to the duckbill 701 of the duckbill ring frame 700 through the guide suction nozzles 401.

[0050] For the specific structure of the guide nozzle 401, please refer to Figure 5 In this embodiment, the guide suction nozzle 401 is provided with five sets of guide adjustment teeth 402, which are evenly distributed on the side surface of the guide suction nozzle 401, combined with Figure 4 and Figure 11 It can be seen that the inclined cone structure of the guide tooth 402 is in parallel contact with the seed metering plate 400 with its bottom surface at the top. The tip of the guide tooth 402 points to the rotation direction of the ring where the guide suction nozzle 401 is located and the angle is adjustable. Thus, when the guide suction nozzle 401 and the guide tooth 402 rotate along the ring, the seeds can be guided along the inclined surface of the guide tooth 402 to the opening of the guide suction nozzle 401. This is beneficial for gradually guiding the target seeds in the population away from the population and guiding the suction hole during movement.

[0051] Preferably, the included angle between adjacent guide teeth 402 is 3~5°, specifically as follows: Figure 10 As shown in the figure, the included angle α between adjacent guide teeth is the included angle. Compared with the design where all guide teeth 402 are parallel, the design where adjacent guide teeth 402 have a certain angle is more conducive to expanding the influence range of guide teeth 402 and better adapting to the irregular shape of the seed.

[0052] Meanwhile, the height of a single guide tooth 402 above the surface of the seed metering disc 400 is 1.5~2.5mm, such as... Figure 11 As shown in the figure, the height h of the guide tooth relative to the surface of the seed metering disc is such that the angle of inclination of a single guide tooth 402 relative to the surface of the seed metering disc 400 ranges from 7° to 9°. Figure 11The angle β between the guide teeth and the seed metering disc surface is such that if the height of the guide teeth 402 is too high, it will be difficult for the seeds to move along the inclined surface to the guide suction nozzle 401, while if the height is too low, it will not be able to guide the seeds away from the population. Therefore, the guide teeth 402 are preferably determined within the above range so that they can better match the size of individual seeds and are more conducive to the claw structure screening out individual seeds.

[0053] Preferably, the connection method between the guide tooth 402 and the guide suction nozzle 401 can refer to the existing technology of detachable fixing with adjustable angle. For example, a set screw is used to set at the root of the guide tooth 402 that contacts the guide suction nozzle 401, so that the guide tooth 402 can be fixed by the set screw after changing the angle, thereby realizing the function of adjusting the angle of the guide tooth 402 as needed.

[0054] exist Figure 5 It can also be seen that an inwardly inclined inner surface 403 is provided on the inner surface of the end of the guide suction nozzle 401 away from the seed metering plate 400. That is, the hole in the guide suction nozzle 401 that is used to contact the seed is provided with an inwardly concave inclined edge, which is conducive to the seed being stuck vertically into the guide suction nozzle 401 and improves the adsorption stability of the seed.

[0055] This demonstrates that, under negative pressure, the guide nozzle 401 can stably adsorb seeds stored in the "V"-shaped container.

[0056] Also see Figure 3 The seed receiving plate 202 is provided with a seed receiving plate through hole 203 that allows the guide suction nozzle 401 to pass through. A through hole brush 204 is provided in the seed receiving plate through hole 203. The front housing 200 is also provided with a seed brush 206 and a seed screening block 207 on the side near the seed dispensing disc 400. The ring where the guide suction nozzle 401 is located can pass through the seed receiving plate through hole 203 and the seed brush 206. The seed screening block 207 is adjacent to the ring where the guide suction nozzle 401 is located and can screen out seeds that have not been completely separated and adsorbed by the guide teeth 402 on the guide suction nozzle 401. When the seed metering disc 400 rotates, the guide suction nozzle 401 can pass through the seed receiving plate through hole 203 and the seed brush 206. The main function of the seed receiving plate through hole 203 is to allow the guide suction nozzle 401 to pass through. In order to prevent the seeds from falling into the seed receiving plate 202 by themselves through the seed receiving plate through hole 203, a through hole brush 204 composed of elastic elements is also provided in the seed receiving plate through hole 203. It allows the guide suction nozzle 401 to rotate through. After the guide suction nozzle 401 rotates through, the through hole brush 204 will also support the seeds in the "V" shaped container.

[0057] The seed brush 206 is used to clean the seeds carried by the guide teeth 402 of the guide suction nozzle 401. When the guide suction nozzle 401 passes through the seed brush 206, the seeds can also be cleaned by the seed brush 206.

[0058] The seed screening block 207 can refer to similar seed screening devices in the prior art. Its main purpose is to disperse the seeds that are stuck together, so that a guide nozzle 401 can only transport a single seed.

[0059] In addition, a seed outlet 208 is provided on the front shell 200. The seed outlet 208 is located below the seed receiving plate 202. After the guide suction nozzle 401 adsorbs the seed and moves it above the seed outlet 208, it will lose its adsorption force due to the influence of the air chamber baffle 601. At this time, the seed will fall off the guide suction nozzle 401, fall along the seed outlet 208 into the duckbill ring frame 700, and further enter the duckbill 701 located below, so as to be sown in the soil.

[0060] The component used to release the suction force of the guide suction nozzle 401—the air chamber baffle 601—is located between the seed receiving plate 202 and the seed brush 206, specifically below the seed receiving plate 202. The air chamber baffle 601 is fixedly mounted on the air tube shaft 900 between the rear baffle 600 and the seed dispensing tray 400, and does not rotate with the seed dispensing tray 400. Obviously, it should be able to contact the surface of the seed dispensing tray 400 without affecting the free rotation of the seed dispensing tray 400. When the guide suction nozzle 401 carrying seeds rotates to the air chamber baffle 601, the inner tube 402 is closed by the air chamber baffle 601, causing the guide suction nozzle 401 to lose its negative pressure suction force and drop the seeds.

[0061] The negative pressure environment between the seed metering disc 400 and the rear baffle 600 can be generated by referring to the existing technology. In this invention, the air tube shaft 900 is a hollow shaft, and a through hole is provided in the part between the seed metering disc 400 and the rear baffle 600. When the air tube shaft 900 is connected to an external negative pressure source, a negative pressure environment can be generated between the seed metering disc 400 and the rear baffle 600.

[0062] In summary, the workflow of this invention is as follows:

[0063] The duckbill 701 portion of this invention is used for contact with the soil, and the air tube shaft 900 is connected to an external horizontally moving power source. The hollow portion of the air tube shaft 900 is connected to an external negative pressure source. During operation, the external power source drives the air tube shaft 900 to move the entire device horizontally. All rotatable components, such as the front fixed plate 300, seed tray 400, guide suction nozzle 401, seed tray limiting frame 500, rear baffle 600, duckbill ring frame 700, duckbill 701, and rear fixed plate 800, will rotate synchronously due to the reaction force from the ground. The space between the seed tray 400 and the rear baffle 600 is transformed into a negative pressure environment by the external negative pressure source.

[0064] See Figure 9 The front shell 200 is divided into four seed supply areas: seed filling area a, seed cleaning area b, seed carrying area c, and seed unloading area d. Seeds fed into the seed inlet 201 by the seed hopper 100 will first accumulate in the seed filling area a. Since the front shell 200 is fixed, the seeds will not rotate with the whole device. The guide suction nozzle 401 on the seed tray 400 will continuously pass through the through hole 203 of the seed receiving plate. The guide adjustment teeth 402 guide the seeds accumulated in the seed filling area a along its inclined surface to the guide suction nozzle 401 for stable adsorption. Then, with the rotation of the whole device, the seeds are moved to the seed cleaning area b.

[0065] In the seed cleaning zone b, because the seeds adsorbed in the guide suction nozzle 401 may clump together, seeds not directly adsorbed by the guide suction nozzle 401 will be sieved back to the seed filling zone a by the seed screening block 207, while the seeds directly adsorbed by the guide suction nozzle 401 will continue to enter the seed carrying zone c with the guide suction nozzle 401. In the seed carrying zone c, the inner inclined surface 403 on the through hole of the guide suction nozzle 401 can stably hold the seeds in the through hole, ensuring the stability of seed adsorption under negative pressure and ensuring that the seeds do not fall off during high-speed operation. At the same time, after passing through the seed brush 206 in the seed carrying zone c, the seed surface can be cleaned. Finally, after the guide suction nozzle 401 carries the seeds into the seed unloading area d, the negative pressure of the guide suction nozzle 401 is released by the air chamber baffle 601, and the seeds fall along the seed outlet 208 into the outer duckbill ring frame 700, and further into the duckbill 701 below, and are discharged into the prepared soil holes. After unloading, the guide suction nozzle 401 will continue to re-enter the seed filling area a along the circular trajectory, thus starting the next round of sowing cycle.

[0066] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this invention.

[0067] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An auxiliary adsorption seed-seeding device, characterized in that, It includes a front shell (200), a front fixing plate (300), a seed metering plate (400), a rear baffle (600), a duckbill ring frame (700), a rear fixing plate (800), and an air tube shaft (900), among which, The front housing (200) is a disc with a seed inlet (201) on its surface. A seed inlet hopper (100) facing the outside of the seed metering device is provided at the seed inlet (201). It is fixedly sleeved on the tubular air shaft (900). A rotatable disc-shaped rear baffle (600) is sleeved on the side of the air shaft (900) away from the front housing (200). Both the front fixed plate (300) and the rear fixed plate (800) are annular plate structures. The front fixed plate (300) is rotatably and coaxially sleeved on the front housing (200), and the rear fixed plate (800) is coaxially sleeved on the rear baffle (600). A duckbill ring frame (700) is detachably and coaxially clamped between the front fixed plate (300) and the rear fixed plate (800), so that the front housing (200), the front fixed plate (300), the rear baffle (600), the duckbill ring frame (700), and the rear fixed plate (800) can form a circular sealed container with the tracheal shaft (900) extending into it as the central axis. Inside the sealed container, a seed metering disc (400) is fitted onto the air tube shaft (900). The seed metering disc (400) is detachably fixedly connected to the rear baffle (600). Multiple sets of guide suction nozzles (401) are provided on one side of the seed metering disc (400) near the front housing (200). The guide suction nozzles (401) are cylindrical structures with their middle parts connected to the other side of the seed metering disc (400). Multiple sets of obliquely conical guides with their bottom surfaces in parallel contact with the surface of the seed metering disc (400) are detachably provided on the side surface of the guide suction nozzles (401). The guide teeth (402) and guide suction nozzles (401) are distributed in a circular pattern at intervals. The tip of the guide teeth (402) points in the same direction as the rotation of the circular ring containing the guide suction nozzles (401). When the side of the seed metering disc (400) without guide suction nozzles (401) is kept under negative pressure and the seed metering disc (400) is rotated, the seed metering disc (400) can deliver the seeds that have been put into the sealed container through the front shell (200) to the duckbill (701) of the duckbill ring frame (700) through the guide suction nozzles (401). Among them, the guide teeth (402) provided on the guide suction nozzle (401) are evenly distributed on the side surface of the guide suction nozzle (401), the tip of the guide teeth (402) points to the rotation direction of the ring where the guide suction nozzle (401) is located and the angle is adjustable, and an inwardly inclined inner surface (403) is also provided on the inner surface of the end of the guide suction nozzle (401) away from the seed metering plate (400). The included angle between adjacent guide teeth (402) is 3~5°; The height of a single guide tooth (402) above the surface of the seed metering disc (400) is 1.5~2.5mm; The angle of the individual guide tooth (402) relative to the surface of the seeding disc (400) ranges from 7 to 9 degrees.

2. The auxiliary adsorption seed-planting device according to claim 1, characterized in that: The front housing (200) has a seed receiving plate (202) and a seed receiving wall (205) adjacent to the seed receiving plate (400) on the side close to the seed receiving plate (400). The seed receiving plate (202) and the seed receiving wall (205) form a "V" shape structure. The low point of the "V" shape structure is located below the seed inlet (201). The seed receiving plate (202) is provided with a seed receiving plate through hole (203) that allows the guide suction nozzle (401) to pass through. A through hole brush (204) is provided in the seed receiving plate through hole (203). The front housing (200) is provided with a seed outlet (208), which is located below the seed receiving plate (202).

3. The auxiliary adsorption seed-planting device according to claim 2, characterized in that: The front housing (200) is also provided with a seed brush (206) and a seed screening block (207) on the side near the seed metering tray (400). The ring where the guide suction nozzle (401) is located can pass through the through hole (203) of the seed receiving plate and the seed brush (206). The seed screening block (207) is adjacent to the ring where the guide suction nozzle (401) is located and can screen out the excess seeds adsorbed on the guide suction nozzle (401).

4. The auxiliary adsorption seed-planting device according to claim 2, characterized in that: The distance between the seed-bearing plate (202) and the seed-bearing wall (205) and the seed-dispensing tray (400) is no more than 0.5 mm.

5. The auxiliary adsorption seed-planting device according to claim 1, characterized in that: The rear baffle (600) has a seed metering tray limiting frame (500) detachably fixed on one side near the seed metering tray (400). The seed metering tray limiting frame (500) is a circular ring with multiple sets of intermittently convex rings pointing to the center. The seed metering tray (400) is coaxially engaged between the seed metering tray limiting frame (500) and the rear baffle (600).

6. The auxiliary adsorption seed-planting device according to claim 2, characterized in that: An air chamber block (601) is fixedly installed on the air pipe shaft (900) between the rear baffle (600) and the seed metering tray (400). The air chamber block (601) is located between the seed receiving plate (202) and the seed brush (206). It can contact the surface of the seed metering tray (400) on the side where the guide suction nozzle (401) is not provided, and the ring where the guide suction nozzle (401) is located can pass through the air chamber block (601).

7. The auxiliary adsorption seed-planting device according to claim 2, characterized in that: The duckbill ring frame (700) is a ring with multiple sets of duckbill (701) spaced apart on its side surface, and the inlet of the duckbill (701) can be connected to the seed outlet (208).

8. The auxiliary adsorption seed-planting device according to claim 1, characterized in that: The air tube shaft (900) is a hollow shaft, and a through hole is provided in the part between the seed metering disc (400) and the rear baffle (600).

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