Air-blowing type rice precision seeding device

Abstract

The application provides a kind of air blowing type rice precision seeding device, belongs to the field of agricultural engineering technology, the device includes: machine head, suspension mechanism, multiple seed supply mechanism, blowing mechanism and ditching and soil covering mechanism.Suspension mechanism is connected with the end of machine head;Each seed supply mechanism includes seed tank, high-frequency vibrator and seed metering device, seed tank is fixedly connected with suspension mechanism, high-frequency vibrator is below seed tank, high-frequency vibrator has spiral frame that approaches seed tank and extends outward, spiral frame has feed inlet and discharge outlet, for the seed in seed tank is shunted into single seed stream;Seed metering device is connected with high-frequency vibrator, seed metering device is used to receive single seed stream and distribute several batches to seed, to control the number of seeding;Blowing mechanism is connected with seed metering device, blowing mechanism is used to blow the seed into soil;Ditching and soil covering mechanism is connected with suspension mechanism.The device can adapt to different seeding environment, realize precision seeding, improve the emergence rate of seeds.

Description

Technical Field

[0001] This application relates to the field of agricultural engineering technology, and more specifically, to an air-blowing precision rice seeding device. Background Technology

[0002] While traditional perforated seed meters meet the needs of rice sowing to some extent, their sowing effect and efficiency still need improvement. Furthermore, these perforated seed meters suffer from inaccurate seeding rate adjustment and instability, limiting their application under various planting conditions. They are ineffective for hybrid rice or in scenarios requiring precision sowing.

[0003] Existing rice direct seeding machines have the following shortcomings in seeding: (i) The seed metering device cannot flexibly adjust the seeding rate according to different planting needs, which limits its application range. In addition, some seed metering devices have uneven seeding during the seeding process, which affects the emergence rate and yield of rice. (ii) Its seed metering device is only applicable to specific planting methods or rice varieties, and lacks versatility; (iii) The rice is sown by scattering the rice seeds on the mud surface, which will be eaten by birds or rats, resulting in a reduction of rice seeds and thus affecting rice yield; Therefore, there is an urgent need for a sowing device that can adapt to different sowing environments, achieve precision sowing, and improve the germination rate of rice seeds. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this application provides an air-blowing precision rice seeding device that can adapt to different seeding environments, achieve precision seeding, and improve seed germination rate.

[0006] This application provides an air-blowing precision rice seeding device, comprising a machine head, a suspension mechanism, multiple seed supply mechanisms, a seed blowing mechanism, and a furrowing and soil covering mechanism. The suspension mechanism is connected to the end of the machine head; each seed supply mechanism includes a seed box, a high-frequency vibrator, and a seed metering device. The seed box is fixedly connected to the suspension mechanism. The high-frequency vibrator is located below the seed box and has a spiral frame that approaches the seed box and extends outward. The spiral frame has an inlet and an outlet for diverting the seeds in the seed box into a single seed stream. The seed metering device is connected to the high-frequency vibrator and is used to receive the single seed stream and distribute it in several batches to control the seeding quantity. The seed blowing mechanism is connected to the seed metering device and is used to blow the discharged seeds into the soil. The furrowing and soil covering mechanism is connected to the suspension mechanism.

[0007] In some embodiments, the suspension mechanism includes: a hanger joint connected to the machine head for suspension; a connecting spindle fixedly connected to the hanger joint; a bearing sleeved on the connecting spindle; a connecting frame with a bearing seat fixedly mounted on the surface near the bearing, the connecting frame and the bearing being connected through the bearing seat; a mounting frame connected to the connecting frame for fixing the seed box; and multiple balance springs symmetrically distributed on both sides of the hanger joint, the balance springs being connected to the connecting frame and the hanger joint.

[0008] In this embodiment, the suspension mechanism facilitates quick connection of the air-blown precision rice seeding device to the machine head, ensuring more stable operation of the device; the connecting frame facilitates connection between the suspension mechanism and the ditching and covering mechanism.

[0009] In some embodiments, the mounting bracket includes: a plurality of fixing plates; a screw connecting the fixing plates and the connecting bracket respectively; a first mounting tube passing through the plurality of fixing plates and fixedly connected to the fixing plates; and a second mounting tube arranged in parallel with the first mounting tube, passing through the plurality of fixing plates and fixedly connected to the fixing plates.

[0010] In this embodiment, the fixing plate on the mounting frame can be used to fix the seed box, prevent the seed box from shaking when the device is operating, and improve the seed supply efficiency, while the screw is used to stabilize the mounting frame.

[0011] In some embodiments, the high-frequency vibrator includes: an outer casing; a vibrating plate having a helical frame; an upper base fixedly connected to the vibrating plate; an armature fixedly connected to the upper base; an electromagnet spaced apart from the armature for generating periodic electromagnetic excitation force; a lower base fixedly connected to the electromagnet and the outer casing; and a plurality of leaf springs arranged around the electromagnet and fixedly connected to the upper base and the lower base respectively.

[0012] In this embodiment, the electromagnet generates a periodic electromagnetic excitation force, which works together with the leaf spring to make the armature and the vibrating disk achieve periodic high-frequency vibration along the vertical axis. The vibration frequency is between 80Hz and 120Hz, and the optimal seed supply effect can be achieved within this vibration range. The seeds stored in the seed box fall into the middle of the vibrating disk, and the seeds are vibrated and move forward along the spiral frame to form a uniform and continuous single-row seed flow.

[0013] In some embodiments, the seed metering device includes: an outer shell having a seed guide tube and a seed metering tube, with a mounting plate provided on the outer shell surface near the seed metering tube; an end cap connected to the outer shell to form a sealed cavity, with a photoelectric sensor provided on the outer surface of the end cap; and an impeller rotatably mounted on the outer shell and the end cap, with multiple blades distributed on the impeller surface, and the blade tips away from the impeller surface approaching the inner wall of the outer shell.

[0014] In this embodiment, a photoelectric sensor is used to accurately record the number of seeds sown. The evenly distributed blades of the impeller divide the seeds fed into the seed tube into several batches as it rotates, thus achieving uniform sowing.

[0015] In some embodiments, the seeding tube includes: a first seeding tube connected to the outer shell and communicating with a sealed cavity; and a second seeding tube connected to the first seeding tube at an acute angle.

[0016] In this embodiment, the second row of seed tubes is connected to the first row of seed tubes at an acute angle, with the connection point roughly located in the middle of the second row of seed tubes. This angle facilitates the entry of seeds into the soil with the help of airflow, thereby improving the seed survival rate.

[0017] In some embodiments, the seed blowing mechanism includes: an airflow pipe connected to the end of a second row of seed pipes away from the soil; a blower fixedly connected to the blower head; an air distribution pipe connected to the air outlet of the blower, the air distribution pipe having multiple air distribution ports; and multiple hoses, each hose being respectively connected to the air distribution port and the airflow pipe.

[0018] In some embodiments, the trenching and covering mechanism includes: a covering base plate, comprising an arc-shaped plate and a horizontal plate, the arc-shaped plate being fixedly connected to the horizontal plate, a plurality of trench openers spaced apart at the bottom of the horizontal plate, and a seed trench opener being provided between adjacent trench openers; covering side plates, respectively disposed on both sides of the covering base plate; side mudguards, fixedly connected to the covering side plates; a plurality of support frames, evenly distributed on the surface of the covering base plate, the support frames being connected to a connecting frame; an installation assembly, comprising an installation base plate, installation side plates, and a plurality of support blocks, the installation base plate being fixedly connected to the support frames and the seed metering device respectively, the installation side plates being connected to both sides of the installation base plate respectively, the support blocks being evenly distributed on the surface of the installation base plate and penetratingly connected to a second installation pipe; and a transmission device, respectively disposed on both sides of the installation side plates and connected to an impeller drive.

[0019] In this embodiment, the trenching and covering mechanism can effectively reduce movement resistance, and the side mudguards can effectively block mud and water splashed during operation, thus adapting to different working environments.

[0020] In some embodiments, the spiral frame includes: a base plate; an inner side plate; and an outer side plate, which is arranged parallel to the inner side plate and abuts against the outwardly extending inner side plate; the inner side plate and the outer side plate are respectively connected to both sides of the base plate, forming a channel with the base plate having two open ends.

[0021] In this embodiment, the outer side plate abuts against the outwardly extending inner side plate, which can prevent the seeds in the seed box from falling outside the vibrating plate when they fall into the vibrating plate, thus preventing seed loss and improving sowing efficiency.

[0022] In some embodiments, the second seed tube is provided with an air baffle plate inside, which is located near the junction of the first seed tube and the second seed tube away from the soil.

[0023] In this embodiment, the airflow in the airflow tube increases the airflow speed by utilizing the Venturi effect when passing through the wind baffle, which helps to move the seeds towards the second row of seed tubes, allowing the seeds to be blown into the soil at a certain speed and angle, which is beneficial for the soil to cover the seeds and improve the seed germination rate.

[0024] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects: This application provides an air-blowing precision rice seeding device that is adaptable to different sowing environments, achieving precision sowing and improving the germination rate of rice seeds. The machine head drives the air-blowing precision rice seeding device forward. Through the cooperation of the seed supply mechanism and the seed dispensing mechanism, the seeds are divided into a uniform single-row seed stream and blown into the soil in batches to achieve precision sowing. The furrowing and covering mechanism reduces resistance during furrowing, making the device smoother during the furrowing process, facilitating adaptation to different soil environments. Furthermore, the soil's own weight can be used to cover the seeds during sowing, improving the germination rate.

[0025] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of an air-blowing precision rice seeding device according to some embodiments of this application; Figure 2 This is a schematic diagram of the suspension mechanism in some embodiments of this application; Figure 3 This is a side view of the suspension mechanism according to some embodiments of this application; Figure 4 This is a schematic diagram of the external structure of a high-frequency vibrator according to some embodiments of this application; Figure 5 This is a schematic diagram of the internal structure of a high-frequency vibrator according to some embodiments of this application; Figure 6 This is a schematic diagram of the structure of a seed metering device according to some embodiments of this application; Figure 7 This is a schematic diagram of the structure of the seed blowing mechanism and mounting components according to some embodiments of this application; Figure 8 This is a schematic diagram of the structure of a trenching and covering mechanism according to some embodiments of this application.

[0027] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Machine head; 200. Suspension mechanism; 210. Hanging connector; 220. Balance spring; 230. Mounting bracket; 231. First mounting tube; 232. Second mounting tube; 233. Fixing plate; 234. Screw; 240. Connecting bracket; 250. Connecting spindle; 260. Bearing; 270. Bearing housing; 300. Seed supply mechanism; 310. Seed box; 320. High-frequency vibrator; 321. Outer cover; 322. Vibrating plate; 323. Upper base; 324. Armature; 325. Electromagnet; 326. Lower base; 327. Leaf spring; 330. Seed metering device; 331. Outer shell; 3311. Seed guide tube; 3312. First seed metering tube; 3313. Second seed metering tube; 3314. Airflow tube; 332. End cap; 333. Impeller; 400. Seed blowing mechanism; 410. Blower; 420. Air distribution duct; 430. Flexible hose; 500. Trenching and covering mechanism; 510. Covering base plate; 511. Ditch opener; 512. Seedling ditch opener; 520. Covering side plate; 530. Side mudguard; 540. Installation components; 541. Installation base plate; 542. Installation side plate; 543. Support block; 550. Support frame; 560. Transmission device. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0030] The following reference Figures 1 to 8 This application describes an air-blown precision rice seeding device according to some embodiments.

[0031] like Figure 1As shown, the air-blowing precision rice seeding device provided according to some embodiments of this application includes a head 100, a suspension mechanism 200, multiple seed supply mechanisms 300, a seed blowing mechanism 400, and a furrowing and soil covering mechanism 500. The suspension mechanism 200 is connected to the end of the machine head 100; each seed supply mechanism 300 includes a seed box 310, a high-frequency vibrator 320, and a seed metering device 330. The seed box 310 is used to store seeds and is fixedly connected to the suspension mechanism 200. The high-frequency vibrator 320 is located below the seed box 310. The high-frequency vibrator 320 has a spiral frame that approaches the seed box 310 and extends outward. The spiral frame has an inlet and an outlet for diverting the seeds falling from the seed box 310 into a single seed stream. The seed metering device 330 is connected to the high-frequency vibrator 320. The seed metering device 330 is used to receive the single seed stream and distribute several batches for seeding to control the sowing quantity. The seed blowing mechanism 400 is connected to the seed metering device 330 and is used to blow the discharged seeds into the soil. The furrowing and covering mechanism 500 is connected to the suspension mechanism 200 and is used for furrowing and sowing.

[0032] It should be noted that the machine head 100 is a power unit that provides the power for the air-blown rice precision seed supply device. The machine head 100 can drag the air-blown rice precision seeding device through the suspension mechanism 200. The suspension mechanism 200 can be connected to the machine head 100 through a three-point suspension method. This three-point suspension method facilitates quick connection between the suspension mechanism 200 and the machine head and makes the air-blown rice precision seed supply device more stable when moving. Multiple seed supply mechanisms 300 are evenly distributed on the furrowing and soil covering mechanism 500. The seed blowing mechanism 400 is fixedly connected to the machine head 100 through a fixed base.

[0033] When the air-blowing precision rice seeding device is in operation, the machine head 100 pulls the suspension mechanism 200 forward. Rice seeds fall from the seed box 310 into the vibrating plate. The electromagnet 325 in the high-frequency vibrator 320 is energized to vibrate periodically. The seeds rise along the spiral frame of the vibrating plate 322 to form a continuous seed flow. The seed flow falls into the seed metering device 330 through the seed guide tube 3311. During the seed metering process, the impeller 333 of the seed metering device 330 is driven to rotate by the transmission device 560 to meter the seeds. During the seed metering process, the seed metering port at the lower end of the seed metering device 330 is connected to the seed metering tube. The seeds fall out of the seed metering tube, the blower 420 generates airflow, the air distribution pipe 420 divides the airflow, and the hose 430 delivers the airflow to the airflow pipe 3314 to blow the seeds into the soil, completing the sowing. The number of seeds sown can be controlled by adjusting the vibration frequency of the high-frequency vibrator 320 and the rotation speed of the transmission device 560 to achieve precise sowing.

[0034] In some possible embodiments, such as Figure 2As shown, the suspension mechanism 200 includes: a hanging joint 210 suspended from the machine head 100; a connecting spindle 250 fixedly connected to the hanging joint 210; a bearing 260 sleeved on the connecting spindle 250; a connecting frame 240 with a bearing seat 270 fixedly installed on its surface near the bearing 260, the connecting frame 240 and the bearing 260 connected through the bearing seat 270; a mounting frame 230 connected to the connecting frame 240 for fixing the seed box 310; and multiple balance springs 220 symmetrically distributed on both sides of the hanging joint 210, the balance springs 220 connected to the connecting frame 240 and the hanging joint 210.

[0035] In this embodiment, the mounting connector 210 includes two mounting side plates, a mounting main plate, a mounting cover plate, and a hook rod. The two mounting side plates are spaced apart, and the hook rod is positioned between the two mounting side plates. The hook rod is used to suspend the mounting connector at the end of the machine head 100. The mounting cover plate is used to connect the tops of the two mounting side plates. The connecting spindle 250 is fixedly connected to the mounting main plate of the mounting connector 210 by welding. The connecting spindle 250 is a cylinder. The bearing 260 is a cylinder with a cavity and is sleeved together with the connecting spindle 250. The connecting spindle 250 is snapped together with the bearing seat 270. The bottom end of the bearing 270 is welded to the upper surface of the connecting frame 240 near the bearing 260. The connecting frame 240 is U-shaped and can be used to indirectly connect the trenching and covering mechanism 500. The connecting frame 240 is fixedly connected to the hanging joint 210 by a plurality of balance springs 220 symmetrically distributed on both sides of the hanging joint 210. One end of the balance spring 220 is connected to the hanging side plate on both sides of the hanging joint 210 by turnbuckles, and the other end is connected to the upper surface of the connecting frame 240 by eye bolts. The mounting frame 230 is fixedly connected to the upper surface of the connecting frame 240. The mounting frame 230 is used to fix the seed metering device 330.

[0036] In some possible embodiments, such as Figure 1 , Figure 2 As shown, the mounting bracket 230 includes: multiple fixing plates 233; screws 234, which connect the fixing plates 233 and the connecting bracket 240 respectively; a first mounting tube 231, which passes through the multiple fixing plates 233 and is fixedly connected to the fixing plates 233; and a second mounting tube 232, which is arranged in parallel with the first mounting tube 231, and passes through the multiple fixing plates 233 and is fixedly connected to the fixing plates 233.

[0037] In this embodiment, such as Figure 3As shown, the fixing plate 233 can be square, rectangular, or elliptical, etc., and is used to fix the seed box 310. The fixing plate 233 has through holes at both ends that are adapted to the first mounting tube 231 and the second mounting tube 232. The first mounting tube 231 and the second mounting tube 232 can be cylindrical or other shapes, and the first mounting tube 231 and the second mounting tube 232 are arranged side by side. Multiple fixing plates 233 are passed through the through holes on the fixing plate 233 and are fixedly connected to the fixing plate 233. The fixing plate 233 is also provided with multiple mounting holes for mounting screws 234. Each fixing plate 233 is equipped with a screw 234. One end of the screw 234 can be installed on different mounting holes of the fixing plate 233 to realize the position adjustment of the mounting frame 230. The other end of the screw 234 is fixedly connected to the upper surface of the connecting frame 240 by a lifting eye bolt, which can keep the mounting frame 230 stable during the operation of the device and prevent the seed box 310 fixed on the fixing plate 233 from shaking and affecting the seed supply.

[0038] In some possible embodiments, such as Figure 4 , Figure 5 As shown, the high-frequency vibrator 320 includes: an outer cover 321; a vibrating plate 322 with a spiral frame; an upper base 323 fixedly connected to the vibrating plate 322; an armature 324 fixedly connected to the upper base 323; an electromagnet 325 arranged at intervals relative to the armature 324 for generating periodic electromagnetic excitation force; a lower base 326 fixedly connected to the electromagnet 325 and the outer cover 321; and multiple leaf springs 327 arranged around the electromagnet 325 and fixedly connected to the upper base 324 and the lower base 326 respectively.

[0039] In this embodiment, the outer cover 321 is a hollow cylinder with an opening at the bottom, which can prevent dust or impurities from entering the high-frequency vibrator 320 and interfering with its vibration operation. The vibrating plate 322 is used to hold the seeds that fall from the seed box 310. The seed box 310 has a cavity for storing seeds and an opening at the bottom for discharging the seeds onto the vibrating plate 322. A spiral frame that approaches the seed box and extends outward is fixedly connected to the vibrating plate 322. The spiral frame has a discharge port and a feed port for conveying the seeds to the seed metering device 330. The bottom of the vibrating plate 322 is connected to the upper base 323. The upper base 323 is fixedly connected to the armature 324 by bolts. Electromagnets 325 are arranged at intervals below the armature 324. The electromagnets 325 are fixedly connected to the top of the lower base 326 by a concave block. Multiple leaf springs 327 are arranged around the electromagnets 325. One end of the leaf spring 327 is fixedly connected to the upper base 323 by bolts, and the other end of the leaf spring 327 is fixedly connected to the lower base 326 by bolts. The leaf spring 327 is inclined between the upper base 323 and the lower base 326. The lower base 326 is also fixedly connected to the bottom of the outer cover 321 by screws. During operation, the electromagnet 325 generates periodic electromagnetic excitation force, which works together with the leaf spring 327 to make the armature 324 and the vibrating plate 322 achieve periodic high-frequency vibration along the vertical axis. The vibration frequency is between 80Hz and 120Hz, and the best seed supply effect can be achieved within this vibration range. The seeds stored in the seed box 310 fall into the middle of the vibrating plate 322. The seeds are vibrated and move forward along the spiral frame to form a uniform and continuous single-row seed flow.

[0040] In some possible embodiments, such as Figure 6 As shown, the seed metering device 330 includes: an outer shell 331, having a seed guide tube 3311 and a seed metering tube, with a mounting plate on the surface of the outer shell 331 near the seed metering tube; an end cap 332, connected to the outer shell 331 to form a sealed cavity, with a photoelectric sensor on the outer surface of the end cap 332; and an impeller 333, rotatably mounted between the outer shell 331 and the end cap 332, with multiple blades distributed on the surface of the impeller 333, and the tips of the blades away from the surface of the impeller 333 approaching the inner wall of the outer shell 331.

[0041] In this embodiment, a seed guide tube 3311 is provided at the top of the outer shell 331. The seed guide tube 3311 is connected to the discharge port of the spiral frame on the vibrating plate 322 and is used to input a single stream of seeds into the seed metering device 330. A seed metering tube is provided at the bottom of the outer shell 331. A mounting plate is provided on the surface of the outer shell 331 near the seed metering tube. The mounting plate is connected to the outer shell 331 by bolts. The mounting plate is used to install the seed metering device on the top of the mounting base plate 541 by bolts, which facilitates blowing seeds into the soil. The end cap 332 is connected to the outer shell 331 by multiple bolts, forming a single layer with the outer shell 331. A sealed cavity is used to house the impeller 333. The end cap 332 is adapted to the opening of the outer shell 331, and the outer surface of the end cap 332 is provided with a photoelectric sensor for accurately recording the number of seeds sown. The impeller 333 is rotatably mounted between the outer shell 331 and the end cap 332. The impeller 333 has a through hole in the middle, and multiple blades are evenly distributed on the surface of the impeller 333. The blade tips away from the surface of the impeller 333 are close to the inner wall of the outer shell 331. As the impeller 333 rotates, the evenly distributed blades divide the seeds fed by the seed guide tube 3311 into several batches, so as to achieve uniform sowing.

[0042] In some possible embodiments, the seeding tube includes: a first seeding tube 3312, connected to the outer shell 331 and communicating with the sealed cavity; and a second seeding tube 3313, which is connected to the first seeding tube 3312 at an acute angle.

[0043] In this embodiment, the first seed tube 3312 is vertically connected to the outer shell 331 and communicates with the sealed cavity formed by the end cap 332 and the outer shell 331, for conveying each batch of seeds to the second seed tube 3313; the second seed tube 3313 is connected to the first seed tube 3312 at an acute angle, and the connection point is approximately located in the middle of the second seed tube 3313. This angle is conducive to the seeds entering the soil with the help of airflow, thereby improving the seed germination rate.

[0044] In some possible embodiments, such as Figure 7 As shown, the seed blowing mechanism 400 includes: an airflow pipe 3314 connected to the end 3313 of the second row of seed tubes away from the soil; a blower 410 fixedly connected to the machine head 100; an air distribution pipe 420 connected to the air outlet of the blower 410, the air distribution pipe 420 having multiple air distribution ports; and multiple flexible hoses 430, each flexible hose 430 being connected to the air distribution port and the airflow pipe 3314 respectively.

[0045] In this embodiment, the blower 410 is fixedly connected to the machine head 100 via a fixed base, and the blower 410 has an air outlet; the air distribution pipe 420 is fixedly connected to the air outlet of the blower 410. The air distribution pipe 420 is a cylinder with a cavity for storing airflow, and is fixedly connected to the bottom plate of the air distribution pipe fixed to the machine head via wire. The air distribution pipe 420 has multiple air distribution ports for dispersing the airflow blown by the blower 410; multiple hoses 430, each hose 430 is connected to a corresponding air distribution port, one end of the hose 430 is fixedly connected to the air distribution port by bolts, and the other end is fixedly connected to the airflow pipe 3314 by bolts. The hoses 430 are used to deliver the dispersed uniform airflow to the airflow pipe 3314 connected to each seed meter 330 to provide the airflow required for the seeds to be blown into the soil. During operation, the airflow from the blower 410 is diverted through the air distribution pipe 420 into the hose 430 to obtain a uniform airflow, thereby reducing the impact on the material, protecting the seeds from damage, improving the seed survival rate, and also helping to improve the sowing accuracy.

[0046] In some possible embodiments, such as Figure 8 As shown, the trenching and covering mechanism 500 includes: a covering base plate 510, comprising an arc-shaped plate and a horizontal plate, the arc-shaped plate being fixedly connected to the horizontal plate, and a plurality of trench openers 511 spaced apart at the bottom of the horizontal plate, with a planting trench opener 512 spaced between adjacent trench openers 511; covering side plates 520, respectively disposed on both sides of the covering base plate 510; side mudguards 530, fixedly connected to the covering side plates 520; and a plurality of support frames 550, evenly distributed on the surface of the covering base plate 510. It is connected to the connecting frame 240; the mounting assembly 540 includes a mounting base plate 541, mounting side plates 542 and multiple support blocks 543. The mounting base plate 541 is fixedly connected to the support frame 550 and the seed metering device 330 respectively. The mounting side plates 542 are respectively connected to both sides of the mounting base plate 541. The support blocks 543 are evenly distributed on the surface of the mounting base plate 541 and are connected through the second mounting pipe 232; the transmission device 560 is located on both sides of the mounting side plate 542 and is connected to the impeller 333 for transmission.

[0047] In this embodiment, the soil-covering base plate 510 includes an arc-shaped plate and a horizontal plate, which can be fixed together by welding. The arc-shaped plate has multiple reinforcing ribs inside, which enhance the strength of the soil-covering base plate 510. Multiple ditch openers 511 are spaced apart at the bottom of the horizontal plate. The number of ditch openers 511 can be set to nine, depending on actual needs. The cutting edge curve of each ditch opener 511 is arc-shaped, with the upper section of the cutting edge curve being an exponential function curve and the lower section a parabolic function curve. A type of... The furrow opener 512 simulates actual sowing furrowing; the soil-covering side plates 520 are respectively set on both sides of the soil-covering base plate 510 and fixed to the soil-covering base plate 510 by welding; the side mudguards 530 are fixedly connected to the soil-covering side plates 520 by bolts, and the side mudguards 530 can prevent the mud piled at the front end of the soil-covering base plate 510 from flowing to both sides of the air-blowing rice sowing device, ensuring that the mud piled up will not cover the seeds; multiple support frames 550 are evenly welded to the surface of the soil-covering base plate 510, and the support frames 550 are welded to the connecting frame 240, used to fix the furrowing and soil-covering mechanism 500 and the suspension mechanism 200. The support frame 550 has a notch adapted to the connecting frame 240 for supporting and welding the connecting frame 240 to prevent unevenness. The mounting assembly 540 includes a mounting base plate 541, mounting side plates 542, and multiple support blocks 543. The mounting base plate 541 is connected to the support frame 550 and the seed metering device 330 respectively. The support frame 550 is welded to the mounting base plate 541, and the seed metering device 330 is fixedly connected to the mounting base plate with bolts. The mounting side plates 542 are welded to both sides of the mounting base plate 541 respectively and connected together by fixing square steel to ensure that the mounting side plates 542 are firmly connected to the mounting base plate. On both sides of the mounting plate 541, support blocks 543 are evenly welded to the surface of the mounting plate 541 and pass through the second mounting pipe 232 to fix the mounting frame 230 and prevent it from shaking. Transmission devices 560 are respectively set on both sides of the mounting side plate 542. Each transmission device 560 includes a motor, coupling, and seed metering shaft. The motor is bolted to the mounting side plate 542, and the seed metering shaft is pass through the impeller 333 in the seed meterer 330. Both ends of the seed metering shaft are engaged with the couplings on both sides of the mounting side plate 542. The motor provides power to achieve the transmission connection between the transmission device 560 and the impeller 333. During operation, the motor provides power to drive the seed metering shaft and impeller 333 to rotate, thus moving the material and preventing blockage during seed metering and achieving precise sowing. The seed metering quantity can be controlled by controlling the speed of the impeller 333 through the motor. The soil-covering base plate 510 effectively reduces movement resistance, and the side mudguards 530 effectively block splashed mud and other impurities during operation, thus adapting to different working environments.

[0048] In some possible embodiments, the spiral frame includes: a base plate; an inner side plate; and an outer side plate, which is arranged parallel to the inner side plate and abuts against the outwardly extending inner side plate; the inner side plate and the outer side plate are respectively connected to both sides of the base plate, forming a channel with the base plate having two open ends.

[0049] In this embodiment, the outer side plate abuts against the outwardly extending inner side plate, which can prevent the seeds in the seed box from falling outside the vibrating plate 322 when they fall into the vibrating plate 322, thus preventing seed loss and improving sowing efficiency. The outward extension of the spiral frame can easily feed the seeds into the seed metering device 330. The inner side plate and the outer side plate are respectively fixedly connected to both sides of the bottom plate, forming a channel with two open ends with the bottom plate. One inner end is the feed port and the other outer end is the discharge port.

[0050] In some possible embodiments, the second seed tube 3313 is provided with an air baffle plate inside, which is located near the connection point between the first seed tube 3312 and the second seed tube 3313 away from the soil.

[0051] In this embodiment, the wind baffle is placed near the connection between the first row of seed tubes 3312 and the second row of seed tubes 3313, away from the soil. This is beneficial because when the airflow enters the airflow pipe 3314 and passes through the wind baffle, the airflow speed is increased by utilizing the Venturi effect, which helps to move the seeds towards the second row of seed tubes 3313. This allows the seeds to be blown into the soil at a certain speed and angle. Air-blown seeding can adapt to different seed sizes, shapes, and weights. By adjusting the airflow speed and the seed throwing angle, it can adapt to different types of soil.

[0052] During operation, the air-blown precision rice seeding device drops seeds from the seed box 310 into the vibrating plate 322. The high-frequency vibrator 320, through the combined action of the pulse electromagnet 325 and the leaf spring 327, generates periodic electromagnetic excitation force, causing the armature 324 and the vibrating plate 322 to vibrate at high frequency along the vertical axis. This drives the seeds to rise along the spiral frame on the vibrating plate 322, forming a uniform and continuous single-row seed flow under the vibration. The seed flow enters the seed guide tube 3311 through the discharge port and falls into the seed metering device 330. The impeller 333 of the seed metering device 330 is driven to rotate by the transmission device 560. The rotation of the impeller divides the falling seeds into several batches, achieving precise seed metering and effectively preventing blockage during seed metering. The seeds fall from the first seed metering tube 3312, and the photoelectric sensor located on the end cover 332 of the seed metering device 330 can accurately count the number of seeds sown. At the same time, the blower 410 generates airflow, which is diverted by the air distribution pipe 420 to obtain a uniform airflow. Seeds are delivered to the seed metering tube via a flexible hose 430. The second seed metering tube 3313 is equipped with an air baffle, effectively utilizing the Venturi effect to increase the airflow velocity within the tube, blowing the seeds into the soil. The soil's own weight then immediately covers the seeds after sowing in one hole, significantly increasing the germination rate. By adjusting the vibration frequency of the high-frequency vibrator 320 and the rotation speed of the impeller 333, different numbers of seeds can be dispensed into the seed metering device 330, enabling precision sowing. Employing the principles of high-frequency vibration and pulsed airflow ejection, this device achieves precision seed delivery and sowing with a metering accuracy of 3–11 seeds. The airflow ejects the seeds into the mud slurry, with a slurry depth ranging from 3 to 10 mm. This air-blowing precision sowing device is adaptable to seeds with different aspect ratios.

[0053] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air-blowing precision rice seeding device, characterized in that, include: Machine head; The suspension mechanism is connected to the end of the machine head; Multiple seed supply agencies, each of which includes: The seed box is fixedly connected to the suspension mechanism; A high-frequency vibrator is located below the seed box. The high-frequency vibrator has a spiral frame that approaches the seed box and extends outward. The spiral frame has an inlet and an outlet for diverting the seeds in the seed box into a single-row seed stream. A seed metering device, connected to the high-frequency vibrator, is used to receive the single-row seed stream and distribute it in several batches for sowing to control the sowing quantity. The seed metering device includes an outer shell, an end cap, and an impeller. The end cap is connected to the outer shell to form a sealed cavity, and a photoelectric sensor is provided on the outer surface of the end cap. The outer shell has a seed guide tube and a seed dispensing tube. A mounting plate is provided on the surface of the outer shell near the seed dispensing tube. The seed dispensing tube includes a first seed dispensing tube and a second seed dispensing tube. The first seed dispensing tube is connected to the outer shell and communicates with the sealed cavity. The second seed dispensing tube is connected to the first seed dispensing tube at an acute angle. An air baffle is provided inside the second seed dispensing tube, and the air baffle is located near the connection point between the first seed dispensing tube and the second seed dispensing tube away from the soil. The impeller is rotatably mounted between the outer shell and the end cap. Multiple blades are distributed on the surface of the impeller, and the tips of the blades away from the impeller surface are close to the inner wall of the outer shell. A seed blowing mechanism, connected to the seed metering device, is used to blow the discharged seeds into the soil; The trenching and soil-covering mechanism is connected to the suspension mechanism; The high-frequency vibrator includes: Outer cover; A vibratory feeder having the spiral frame; The upper base is fixedly connected to the vibratory feeder; An armature is fixedly connected to the upper base; An electromagnet, spaced apart from the armature, is used to generate periodic electromagnetic excitation force; The lower base is fixedly connected to the electromagnet and the outer cover; Multiple leaf springs are arranged around the electromagnet and are fixedly connected to the upper base and the lower base, respectively.

2. The air-blown precision rice seeding device according to claim 1, characterized in that, The suspension mechanism includes: A mounting connector is used to suspend and connect to the machine head. Connect the mandrel and fix it to the hook connector; The bearing is fitted onto the connecting mandrel; A connecting frame is provided with a bearing housing fixedly mounted on its surface near the bearing, and the connecting frame is connected to the bearing via the bearing housing. The mounting bracket, connected to the connecting bracket, is used to fix the seed box; Multiple balance springs are symmetrically distributed on both sides of the hook joint, and the balance springs are connected to the connecting frame and the hook joint.

3. The air-blowing precision rice seeding device according to claim 2, characterized in that, The mounting bracket includes: Multiple fixing plates; The screws connect the fixing plate and the connecting frame respectively; A first mounting tube passes through multiple fixing pieces and is fixedly connected to the fixing pieces; The second mounting tube is arranged in parallel with the first mounting tube, and the second mounting tube passes through the plurality of fixing pieces and is fixedly connected to the fixing pieces.

4. The air-blowing precision rice seeding device according to claim 1, characterized in that, The seed blowing mechanism includes: An airflow tube is connected to the end of the second seeding tube, which is away from the soil. The blower is fixedly connected to the blower head; The air distribution duct is connected to the air outlet of the blower, and the air distribution duct has multiple air outlets; Multiple flexible hoses, each hose being connected to the air distribution port and the airflow pipe respectively.

5. The air-blowing precision rice seeding device according to claim 3, characterized in that, The trenching and soil covering mechanism includes: The soil-covering base plate includes an arc-shaped plate and a horizontal plate. The arc-shaped plate is fixedly connected to the horizontal plate. Multiple ditch openers are spaced apart at the bottom of the horizontal plate, and seed ditch openers are provided between adjacent ditch openers. Soil-covered side plates are respectively disposed on both sides of the soil-covered bottom plate; Side mudguards are fixedly connected to the soil-covered side plates; Multiple support frames are evenly distributed on the surface of the soil-covered base plate, and the support frames are connected to the connecting frame; The mounting assembly includes a mounting base plate, mounting side plates, and multiple support blocks. The mounting base plate is fixedly connected to the support frame and the seed metering device, respectively. The mounting side plates are connected to both sides of the mounting base plate, respectively. The support blocks are evenly distributed on the surface of the mounting base plate and are connected through the second mounting tube. The transmission devices are located on both sides of the mounting side plate and are connected to the impeller drive.

6. The air-blowing precision rice seeding device according to any one of claims 1 to 3, characterized in that, The spiral frame includes: Base plate; Inner side panel; The outer side plate is arranged parallel to the inner side plate and abuts against the inner side plate after it extends outward; The inner side plate and the outer side plate are respectively connected to both sides of the bottom plate, forming a channel with two open ends with the bottom plate.

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