Agricultural unmanned aerial vehicle fertilizer particle throwing device

Abstract

The agricultural unmanned aerial vehicle fertilizer particle throwing device comprises a shell, the top of the shell communicates with a feeding pipe, an air outlet is formed in the bottom of one side of the shell, the inner wall of the shell is fixedly connected with a throwing mechanism, one side of the throwing mechanism is fixedly connected with a stirring mechanism, and one side of the throwing mechanism is fixedly connected with a material returning mechanism. The invention relates to the technical field of fertilizer particle throwing, according to the agricultural unmanned aerial vehicle fertilizer particle throwing device, fertilizer particles falling through a filter plate are separated through a partition plate, so that the fertilizer particles are distributed more orderly in space, wider and more uniform fertilization coverage can be achieved, the fertilizer particle throwing device is simple in structure and convenient to use, and the application range of the agricultural unmanned aerial vehicle is widened. The rotating spiral plate preliminarily stirs fertilizer particles, a plurality of round holes are evenly formed in the surface of the spiral plate, when the spiral rod rotates, the round holes enable materials to flow from one side of the rod to the other side of the rod, and the mobility and exchangeability of the materials in a stirring area are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer granule spreading, and in particular to a fertilizer granule spreading device of an agricultural unmanned aerial vehicle. Background Art

[0002] Pesticide and fertilizer particles can slowly release nutrients and pesticides in the soil, which can not only provide continuous nutritional support for crop growth and promote the healthy growth of crops, but also effectively prevent and control pests and diseases, reduce the damage of pests and diseases to crops, thereby improving the yield and quality of crops, while also reducing the waste of pesticides and fertilizers and reducing pollution to the environment. The agricultural drone fertilizer particle spreading device is a device installed on an agricultural drone for accurately spreading fertilizer particles. The device is usually composed of a material box, a conveying mechanism, a spreading mechanism and a control system. This device can improve fertilization efficiency and reduce manual labor intensity. At the same time, it can also ensure the uniformity and accuracy of fertilization, which helps to improve the yield and quality of crops. Compared with traditional manual spreading, it greatly improves the operating efficiency and can complete the fertilization task of a large area of ​​farmland within one day, greatly saving manpower and time costs, and effectively promoting agriculture to move towards intelligence and modernization. The agricultural fertilizer granule spreading device is prone to uneven spreading during the spreading process, which in turn affects the consistency of crop growth. Therefore, we propose an agricultural drone fertilizer granule spreading device. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: an agricultural drone fertilizer particle spreading device, comprising a shell, the top of the shell is connected to a feed pipe, a bottom of one side of the shell is provided with an air outlet, the inner wall of the shell is fixedly connected to a spreading mechanism, one side of the spreading mechanism is fixedly connected to a stirring mechanism, one side of the spreading mechanism is fixedly connected to a return mechanism, and the inner wall of the shell is fixedly connected to one side of the return mechanism; The spreading mechanism includes a connecting ring plate and a discharging cylinder. The discharging cylinder is fixed and can further refine and evenly distribute the fertilizer particles during the friction with the rotating screening cylinder. This friction can break up some larger particles or sticky fertilizer particles, making the fertilizer particles finally scattered more dense and even, thereby improving the fertilization effect. The bottom of the connecting ring plate is fixedly connected to the screening cylinder, and the inner wall of the screening cylinder is fixedly connected to a partition plate. The partition plate separates the fertilizer particles falling through the filter plate, so that the fertilizer particles are more orderly distributed in space, which helps to achieve wider and more even fertilization coverage. The bottom of the inner wall of the discharging cylinder is fixedly connected to a sleeve, and the bottom of the inner wall of the discharging cylinder is fixedly connected to a motor. The driving shaft of the motor is fixedly connected to a round rod, and the top of the partition plate is fixedly connected to There is a folding rod, and a rectangular hole is opened on one side of the discharge cylinder. The folding rod rotates with the rotation of the round rod. During the rotation process, the screening cylinder and the partition plate rotate together under the drive of the motor, and the fertilizer particles are scattered to the outside by centrifugal force, so as to realize large-area and high-efficiency fertilizer spreading and improve the fertilization efficiency. An oblique ring plate is fixedly connected to the round rod, and the oblique ring plate blocks the fertilizer particles falling near the center, so that these fertilizer particles slide obliquely outward to the partition plate, effectively preventing the fertilizer particles from falling on the sleeve and causing accumulation or blockage. The top of the connecting ring plate is fixedly connected to the bottom of the return mechanism, and the top of the discharge cylinder is fixedly connected to the bottom of the shell. The end of the folding rod away from the partition plate is fixedly connected to one side of the round rod. There are multiple folding rods, and the multiple folding rods are evenly distributed on the round rod.

[0004] Furthermore, the stirring mechanism includes a spiral plate, and the rotating spiral plate performs preliminary stirring on the fertilizer particles. The spiral plate is provided with circular holes, and multiple circular holes are evenly provided on the surface. When the spiral rod rotates, the circular holes allow the material to flow from one side of the rod to the other side, which greatly increases the fluidity and exchangeability of the material in the stirring area, which avoids the limitation that the material only moves along the surface of the spiral rod, so that the material can be more fully mixed in the axial and radial directions, and the uniformity of stirring is improved. A round rod T-shaped scraper is fixedly connected to one side of the spiral plate. As the round rod rotates, the round rod T-shaped scraper rotates synchronously, which can The invention can effectively scrape the ring plate to prevent the fertilizer particles from adhering to the ring plate, and avoid affecting the operation efficiency of the equipment due to the accumulation of fertilizer. The round rod T-shaped scraper is sleeved and rotatably connected with an annular sleeve plate, and the annular sleeve plate is fixedly connected with a stirring plate. The stirring plate sleeved on the round rod T-shaped scraper starts to rotate with the round rod T-shaped scraper as the rotation axis, and further breaks up the fertilizer particles, so that the particle size distribution of the fertilizer particles is more uniform. One side of the spiral plate is fixedly connected to one side of the round rod, and a plurality of the round rod T-shaped scrapers are provided, and the plurality of the round rod T-shaped scrapers are evenly distributed on one side of the spiral plate.

[0005] Furthermore, the material return mechanism includes a filter plate and a fixed rod. After the fertilizer particles are broken up, they are screened through the filter plate, and the fertilizer particles that meet the spreading diameter are screened out and enter the bottom for spreading, while those that do not meet the diameter remain on the filter plate, thereby ensuring that the particle size of the spread fertilizer meets the expected standard and avoiding the fertilizer particles being too large or too small to affect the fertilization effect. A hollow ring plate is fixedly connected to the top of the filter plate, a semi-ring hole one is opened on one side of the inner wall of the hollow ring plate, a semi-ring hole two is opened on the side of the inner wall of the hollow ring plate away from the semi-ring hole one, and a Ventilation plate, one side of the inner wall of the hollow ring plate is fixedly connected with an oblique plate, after the fertilizer particles enter the hollow ring plate, a part of them stays at the ventilation plate, and a part of them slides along the oblique plate to the lifting plate, the oblique plate guides the fertilizer particles to slide, one side of the hollow ring plate is fixedly connected with ventilation splint 1, and one side of the hollow ring plate is fixedly connected with ventilation splint 2. After starting the air pump, ventilation splint 1 and ventilation splint 2 will directly guide the wind direction obliquely downward to the surface of the filter plate, and the fertilizer particles that have not been screened on the surface are sucked into the hollow ring plate, so as to realize the recovery and reprocessing of unqualified fertilizer particles. The hollow ring plate is away from A lifting plate is arranged on one side of the ventilation splint, an air pipe is connected to one side of the hollow ring plate, an air pump is connected to one end of the air pipe away from the hollow ring plate, a moving end of a linear electric slide is fixedly connected to one side of the lifting plate, a ring plate is fixedly connected to the top of the hollow ring plate, a feeding hole is opened on one side of the ring plate, the linear electric slide drives the lifting plate to move upward, stops at the feeding hole, and the lifting plate transports the fertilizer particles to the feeding port, so that the fertilizer particles can re-enter and be stirred, one end of the fixed rod is fixedly connected to a scraper, the top of the scraper is fixedly connected to a semi-ring baffle, and the motor is again The start-up drives the fixed rod and the scraper to rotate, and the scraper scrapes the fertilizer particles on the lifting plate to make them accumulate after extrusion. The semi-ring baffle is fixed on the top of the scraper to prevent the fertilizer particles from overflowing and can only fall from the feed port. The bottom of the filter plate is fixedly connected to the top of the connecting ring plate, and the top of the ring plate is fixedly connected to the inner wall of the shell. The side of the linear electric slide rail away from the lifting plate is fixedly connected to the inner wall of the shell, and the end of the fixed rod away from the scraper is fixedly connected to the round rod. One side of the filter plate passes through the round rod and is rotatably connected to the round rod. The bottom of the air pump is fixedly connected to the bottom of the inner wall of the shell.

[0006] The present invention provides a fertilizer granule spreading device for an agricultural drone, which has the following beneficial effects: 1. This agricultural drone fertilizer particle spreading device is provided with a partition plate to separate the fertilizer particles falling through the filter plate, so that the fertilizer particles are more orderly distributed in space, which is conducive to achieving wider and more uniform fertilization coverage. The rotating spiral plate performs preliminary stirring on the fertilizer particles, and a plurality of circular holes are evenly opened on its surface. When the spiral rod rotates, the circular holes allow the material to flow from one side of the rod to the other side, which greatly increases the fluidity and exchangeability of the material in the stirring area, which avoids the limitation that the material only moves along the surface of the spiral rod, so that the material can be more fully mixed in both the axial and radial directions. After being broken up, the fertilizer particles are screened through the filter plate, and the fertilizer particles that meet the spreading diameter are screened out to enter the bottom for spreading, and those that do not meet the diameter remain on the filter plate, ensuring that the particle size of the final fertilizer spread meets the expected standard.

[0007] 2. The fertilizer particle spreading device of the agricultural drone is provided with a spreading mechanism. The partition plate separates the fertilizer particles falling through the filter plate, so that the fertilizer particles are more orderly distributed in space, which is conducive to achieving wider and more uniform fertilization coverage. The oblique ring plate blocks the fertilizer particles falling near the center, allowing these fertilizer particles to slide obliquely outward to the partition plate, effectively preventing the fertilizer particles from falling on the sleeve to cause accumulation or blockage. The folding rod rotates with the rotation of the round rod. During the rotation, the screening cylinder and the partition plate rotate together driven by the motor, and the centrifugal force is used to spread the fertilizer particles to the outside, so as to achieve large-area and high-efficiency fertilizer spreading and improve the fertilization efficiency. The discharge cylinder is fixed and in the process of friction with the rotating screening cylinder, the fertilizer particles are further refined and uniformed. This friction can break up some larger particles or sticky fertilizer particles, so that the fertilizer particles finally scattered are finer and more uniform, thereby improving the fertilization effect.

[0008] 3. This agricultural drone fertilizer granule throwing device is provided with a stirring mechanism. The rotating spiral plate performs preliminary stirring on the fertilizer granules. The multiple circular holes evenly opened on the surface of the spiral plate allow the material to flow from one side of the rod to the other side when the spiral rod rotates, which greatly increases the fluidity and exchangeability of the material in the stirring area. This avoids the limitation that the material only moves along the surface of the spiral rod, so that the material can be more fully mixed in both the axial and radial directions, and the uniformity of stirring is improved. As the round rod rotates, the round rod T-shaped scraper rotates synchronously, which can effectively scrape the ring plate to prevent the fertilizer granules from adhering to the ring plate, and avoid affecting the equipment operation efficiency due to fertilizer accumulation. The stirring plate mounted on the round rod T-shaped scraper starts to rotate with the round rod T-shaped scraper as the rotation axis, further breaking up the fertilizer granules, and making the particle size distribution of the fertilizer granules more uniform.

[0009] 4. This agricultural drone fertilizer particle spreading device is provided with a material return mechanism. After the fertilizer particles are broken up, they are screened through a filter plate, and the fertilizer particles that meet the spreading diameter are screened out and enter the bottom for spreading, while those that do not meet the diameter remain on the filter plate, ensuring that the particle size of the spread fertilizer meets the expected standard and avoiding the fertilization effect being affected by fertilizer particles that are too large or too small. After starting the air pump, ventilation splint 1 and ventilation splint 2 will directly guide the wind direction obliquely downward to the surface of the filter plate, and suck the fertilizer particles that have not been screened on the surface into the hollow ring plate, so as to realize the recovery and reprocessing of unqualified fertilizer particles. After the fertilizer particles enter the hollow ring plate, a part of them stays at the ventilation plate, and a part of them slides down to the lifting plate along the inclined plate. The inclined plate guides the fertilizer particles to slide down, and the linear electric slide rail drives the lifting plate to move upward, rises to the feed hole and stops, and the lifting plate transports the fertilizer particles to the feed port, so that the fertilizer particles can re-enter and be stirred. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of a cross-section of a fertilizer particle spreading device for an agricultural drone according to the present invention; Figure 2 This is a schematic diagram of the second cross-section structure of the fertilizer particle spreading device for an agricultural drone of the present invention; Figure 3 It is a schematic diagram of the structure of the throwing mechanism of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the throwing mechanism of the present invention; Figure 5 This is a schematic diagram of the stirring mechanism structure of the present invention; Figure 6 It is a schematic diagram of the side structure of the stirring mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the material return mechanism of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the material return mechanism of the present invention.

[0011] In the figure: 1, shell; 2, feed pipe; 3, air outlet; 4, throwing mechanism; 5, stirring mechanism; 6, material return mechanism; 41, connecting ring plate; 42, screening cylinder; 43, partition plate; 44, discharge cylinder; 45, sleeve; 46, motor; 47, round rod; 48, folding rod; 49, rectangular hole; 410, oblique ring plate; 51, spiral plate; 52, round hole; 53, round rod T-shaped scraper; 54, annular sleeve plate ; 55. stirring plate; 61. filter plate; 62. hollow ring plate; 63. semi-ring hole one; 64. semi-ring hole two; 65. ventilation plate; 66. oblique plate; 67. ventilation splint one; 68. ventilation splint two; 69. lifting plate; 610. air pipe; 611. air pump; 612. linear electric slide rail; 613. ring plate; 614. feed hole; 615. fixing rod; 616. scraper; 617. semi-ring baffle. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] For the first embodiment, please refer to Figure 1-Figure 4 The present invention is a fertilizer particle spreading device for an agricultural drone, comprising a shell 1, a feed pipe 2 is connected to the top of the shell 1, an air outlet 3 is provided at the bottom of one side of the shell 1, a spreading mechanism 4 is fixedly connected to the inner wall of the shell 1, a stirring mechanism 5 is fixedly connected to one side of the spreading mechanism 4, a material return mechanism 6 is fixedly connected to one side of the spreading mechanism 4, and the inner wall of the shell 1 is fixedly connected to one side of the material return mechanism 6; The spreading mechanism 4 includes a connecting ring plate 41 and a discharging cylinder 44. The bottom of the connecting ring plate 41 is fixedly connected to a sieve cylinder 42. The inner wall of the sieve cylinder 42 is fixedly connected to a partition plate 43. The bottom of the inner wall of the discharging cylinder 44 is fixedly connected to a sleeve 45. The bottom of the inner wall of the discharging cylinder 44 is fixedly connected to a motor 46. The driving shaft of the motor 46 is fixedly connected to a round rod 47. The top of the partition plate 43 is fixedly connected to a folding rod 48. A rectangular hole 49 is provided on one side of the discharging cylinder 44. An oblique ring plate 410 is fixedly connected to the round rod 47. The top of the connecting ring plate 41 is fixedly connected to the bottom of the return mechanism 6. The top of the discharging cylinder 44 is fixedly connected to the bottom of the shell 1. One end of the folding rod 48 away from the partition plate 43 is fixedly connected to one side of the round rod 47. A plurality of folding rods 48 are provided, and the plurality of folding rods 48 are evenly distributed on the round rod 47. When in use, the fertilizer particles are put into the shell 1 from the feed pipe 2, and the spreading mechanism 4 is started. , driving the stirring mechanism 5 to stir and crush the fertilizer particles. The crushed fertilizer particles are screened by the return mechanism 6, and the fertilizer particles that are crushed to meet the throwing diameter enter the throwing mechanism 4, and are thrown onto the crops after the rotation of the throwing mechanism 4. The fertilizer particles that do not meet the throwing diameter enter the return mechanism 6, and the fertilizer particles re-enter the stirring mechanism 5, and are stirred and crushed again until all the fertilizer particles meet the throwing diameter and are separated by the partition plate 43. The fertilizer particles close to the center are blocked by the oblique ring plate 410 when falling, and slide obliquely outward to the partition plate to prevent them from falling onto the sleeve 45. The motor 46 drives the round rod 47 to rotate. At the same time, the folding rod 48 fixedly connected to the round rod 47 rotates, and the partition plate 43 rotates together with the screening cylinder 42. Due to centrifugal force, the fertilizer particles are thrown to the outside, and the discharge cylinder 44 is fixed. During the rotation friction with the screening cylinder 42, the fertilizer particles are thrown more finely and evenly.

[0014] For the second embodiment, please refer to Figure 1-Figure 8The present invention provides an agricultural drone fertilizer particle throwing device: the stirring mechanism 5 includes a spiral plate 51, a circular hole 52 is opened on the spiral plate 51, a round rod T-shaped scraper 53 is fixedly connected to one side of the spiral plate 51, an annular sleeve 54 is sleeved and rotatably connected to the round rod T-shaped scraper 53, a stirring plate 55 is fixedly connected to the annular sleeve 54, one side of the spiral plate 51 is fixedly connected to one side of the round rod 47, a plurality of round rod T-shaped scrapers 53 are provided, and the plurality of round rod T-shaped scrapers 53 are evenly distributed on one side of the spiral plate 51; The material return mechanism 6 includes a filter plate 61 and a fixing rod 615. A hollow ring plate 62 is fixedly connected to the top of the filter plate 61. A semi-ring hole 1 63 is provided on one side of the inner wall of the hollow ring plate 62. A semi-ring hole 2 64 is provided on the side of the inner wall of the hollow ring plate 62 away from the semi-ring hole 1 63. A ventilation plate 65 is fixedly connected to one side of the inner wall of the hollow ring plate 62. An oblique plate 66 is fixedly connected to one side of the inner wall of the hollow ring plate 62. A ventilation splint 1 67 is fixedly connected to one side of the hollow ring plate 62. A ventilation splint 2 68 is fixedly connected to one side of the hollow ring plate 62. A lifting plate 69 is provided on the side of the hollow ring plate 62 away from the ventilation splint 1 67. An air pipe 610 is connected to one side of the hollow ring plate 62. An end of the air pipe 610 away from the hollow ring plate 62 is connected to an air pump 611. One side of the lifting plate 69 is fixedly connected to the moving end of the linear electric slide rail 612, the top of the hollow ring plate 62 is fixedly connected to the ring plate 613, one side of the ring plate 613 is provided with a feed hole 614, one end of the fixed rod 615 is fixedly connected to the scraper 616, the top of the scraper 616 is fixedly connected to the semi-ring baffle 617, the bottom of the filter plate 61 is fixedly connected to the top of the connecting ring plate 41, the top of the ring plate 613 is fixedly connected to the inner wall of the shell 1, the side of the linear electric slide rail 612 away from the lifting plate 69 is fixedly connected to the inner wall of the shell 1, the end of the fixed rod 615 away from the scraper 616 is fixedly connected to the round rod 47, one side of the filter plate 61 passes through the round rod 47 and is rotatably connected to the round rod 47, and the bottom of the air pump 611 is fixedly connected to the bottom of the inner wall of the shell 1. When in use, after the fertilizer particles enter the shell 1, the motor 46 is started, driving the round rod 47 to rotate, and the spiral plate 51 fixedly connected to the round rod 47 rotates accordingly to initially stir the fertilizer particles. The spiral plate 51 rotates while driving the round rod T-shaped scraper 53 to rotate, so that the round rod T-shaped scraper scrapes the ring plate 613 to prevent the fertilizer particles from adhering to the ring plate 613. The stirring plate 55 sleeved on the round rod T-shaped scraper 53 starts to rotate due to the speed, and the fertilizer particles are further broken up. A plurality of circular holes 52 are evenly arranged on the surface of the spiral plate 51, so that the material flows from one side of the rod to the other side when the spiral rod rotates, thereby increasing the fluidity and exchangeability of the material in the stirring area, avoiding the material from moving only along the surface of the spiral rod, and allowing the material to have more sufficient axial and radial directions. The mixing is improved to improve the uniformity of mixing. After the fertilizer particles are broken up, the motor 46 is turned off, and the fertilizer particles are screened through the filter plate 61. The fertilizer particles that meet the throwing diameter enter the bottom for throwing, and the fertilizer particles that do not meet the throwing diameter remain on the filter plate 61. The air pump 611 is started, and the air pump 611 exhausts the inside of the ring plate 613 through the air pipe 610 and the ventilation plate 65. The ventilation splint 1 67 and the ventilation splint 2 68 directly guide the wind direction obliquely downward to the surface of the filter plate 61, and the fertilizer particles that have not been screened on the surface are sucked into the hollow ring plate 62. After the fertilizer particles enter the hollow ring plate 62, part of them stay at the ventilation plate 65 due to the suction force, and part of them slide down to the lifting plate 69 along the inclined plate 66. After all the fertilizer particles are sucked into the hollow ring plate 62,The air pump 611 is turned off, and the fertilizer particles slide down the inclined plate 66 to the lifting plate 69 due to gravity. At this time, the linear electric slide rail 612 is started, driving the lifting plate 69 to move upward, and the lifting plate 69 rises to the feeding hole 614 and stops. The motor 46 is started again, driving the fixed rod 615 and the scraper 616 to rotate. The scraper 616 scrapes the fertilizer particles on the lifting plate 69. The fertilizer particles are squeezed and accumulated. A semi-ring baffle 617 is fixed on the top of the scraper 616 to prevent the fertilizer particles from overflowing. They can only fall from the feeding port and are stirred and dispersed again. The fertilizer particles that meet the throwing diameter fall through the filter plate 61.

[0015] When the present invention is operated and used, fertilizer particles are put into the shell 1 from the feed pipe 2, the spreading mechanism 4 is started, and the stirring mechanism 5 is driven to stir and break the fertilizer particles. The crushed fertilizer particles are screened by the return mechanism 6, and the fertilizer particles that are broken to meet the spreading diameter enter the spreading mechanism 4, and are thrown onto the crops after the rotation of the spreading mechanism 4, while the fertilizer particles that do not meet the spreading diameter enter the return mechanism 6, and the fertilizer particles re-enter the stirring mechanism 5, and are stirred and broken again until all the fertilizer particles meet the spreading diameter. After the fertilizer particles enter the shell 1, the motor 46 is started, driving the round rod 47 to rotate, and the spiral plate 51 fixedly connected to the round rod 47 rotates accordingly, so as to preliminarily stir the fertilizer particles, and the spiral plate 51 rotates while driving the stirring mechanism 5 to stir the crops. The movable round rod T-shaped scraper 53 rotates, so that the round rod T-shaped scraper scrapes the ring plate 613 to prevent the fertilizer particles from adhering to the ring plate 613. The stirring plate 55 sleeved on the round rod T-shaped scraper 53 starts to rotate due to the speed, and the fertilizer particles are further dispersed. A plurality of circular holes 52 are evenly provided on the surface of the spiral plate 51, so that the material flows from one side of the rod to the other side when the spiral rod rotates, thereby increasing the fluidity and exchangeability of the material in the mixing area, avoiding the material from moving only along the surface of the spiral rod, so that the material can be more fully mixed in the axial and radial directions, and the uniformity of mixing is improved. After the fertilizer particles are dispersed, the motor 46 is turned off, and the fertilizer particles are screened through the filter plate 61. The fertilizer particles that meet the throwing diameter enter the lower part for throwing, and the fertilizer particles that do not meet the throwing diameter are not thrown. The particles remain on the filter plate 61, and the air pump 611 is started. The air pump 611 exhausts the inside of the ring plate 613 through the air pipe 610 and the ventilation plate 65. The ventilation splint 1 67 and the ventilation splint 2 68 guide the wind direction directly obliquely downward to the surface of the filter plate 61, and the fertilizer particles on the surface that have not been screened are sucked into the hollow ring plate 62. After the fertilizer particles enter the hollow ring plate 62, part of them stay at the ventilation plate 65 due to the suction force, and part of them slide along the inclined plate 66 to the lifting plate 69. After all the fertilizer particles are sucked into the hollow ring plate 62, the air pump 611 is turned off. Due to gravity, the fertilizer particles slide along the inclined plate 66 to the lifting plate 69. At this time, the linear electric slide rail 612 is started to drive the lifting plate 69 to move upward, and the lifting plate 69 rises to the feeding hole 614 The motor 46 stops, and starts again, driving the fixed rod 615 and the scraper 616 to rotate. The scraper 616 scrapes the fertilizer particles on the lifting plate 69, and the fertilizer particles are piled up after being squeezed. A semi-ring baffle 617 is fixed on the top of the scraper 616 to prevent the fertilizer particles from overflowing. The fertilizer particles can only fall from the feed port and are stirred and broken up again. The fertilizer particles that meet the throwing diameter fall through the filter plate 61 and are separated by the partition plate 43. The fertilizer particles close to the center are blocked by the oblique ring plate 410 when falling, and slide obliquely outward to the partition plate to prevent them from falling onto the sleeve 45. The motor 46 drives the round rod 47 to rotate. At the same time, the folding rod 48 fixedly connected to the round rod 47 rotates, and the partition plate 43 rotates together with the screening cylinder 42. Due to the centrifugal force, the fertilizer particles are thrown to the outside.The discharging cylinder 44 is fixed and rotates and rubs with the screening cylinder 42, so that the fertilizer particles are scattered more finely and evenly.

[0016] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fertilizer granule spreading device for an agricultural drone, comprising a housing (1), characterized in that: The top of the shell (1) is connected to a feed pipe (2), a bottom of one side of the shell (1) is provided with an air outlet (3), the inner wall of the shell (1) is fixedly connected to a spreading mechanism (4), one side of the spreading mechanism (4) is fixedly connected to a stirring mechanism (5), one side of the spreading mechanism (4) is fixedly connected to a return mechanism (6), and the inner wall of the shell (1) is fixedly connected to one side of the return mechanism (6); The throwing mechanism (4) comprises a connecting ring plate (41) and a discharging cylinder (44); the bottom of the connecting ring plate (41) is fixedly connected to a sieve cylinder (42); the inner wall of the sieve cylinder (42) is fixedly connected to a partition plate (43); the bottom of the inner wall of the discharging cylinder (44) is fixedly connected to a sleeve (45); the bottom of the inner wall of the discharging cylinder (44) is fixedly connected to a motor (46); the driving shaft of the motor (46) is fixedly connected to a round rod (47); the top of the partition plate (43) is fixedly connected to a folding rod (48); a rectangular hole (49) is opened on one side of the discharging cylinder (44); and an oblique ring plate (410) is fixedly connected to the round rod (47).

2. The fertilizer granule spreading device for agricultural drone according to claim 1, characterized in that: The top of the connecting ring plate (41) is fixedly connected to the bottom of the material return mechanism (6), and the top of the material discharge cylinder (44) is fixedly connected to the bottom of the housing (1).

3. The fertilizer granule spreading device for agricultural drone according to claim 1, characterized in that: One end of the folding rod (48) away from the partition plate (43) is fixedly connected to one side of the round rod (47), and a plurality of the folding rods (48) are provided, and the plurality of the folding rods (48) are evenly distributed on the round rod (47).

4. The fertilizer granule spreading device for agricultural drone according to claim 1, characterized in that: The stirring mechanism (5) comprises a spiral plate (51), a circular hole (52) is formed on the spiral plate (51), a round rod T-shaped scraper (53) is fixedly connected to one side of the spiral plate (51), an annular sleeve plate (54) is sleeved on and rotatably connected to the round rod T-shaped scraper (53), and a stirring plate (55) is fixedly connected to the annular sleeve plate (54).

5. The agricultural drone fertilizer granule spreading device according to claim 4, characterized in that: One side of the spiral plate (51) is fixedly connected to one side of the round rod (47), and a plurality of the round rod T-shaped scrapers (53) are provided, and the plurality of the round rod T-shaped scrapers (53) are evenly distributed on one side of the spiral plate (51).

6. The agricultural drone fertilizer granule spreading device according to claim 1, characterized in that: The material return mechanism (6) comprises a filter plate (61) and a fixing rod (615); a hollow ring plate (62) is fixedly connected to the top of the filter plate (61); a semi-ring hole (63) is provided on one side of the inner wall of the hollow ring plate (62); a semi-ring hole (64) is provided on the side of the inner wall of the hollow ring plate (62) away from the semi-ring hole (63); a ventilation plate (65) is fixedly connected to one side of the inner wall of the hollow ring plate (62); an oblique plate (66) is fixedly connected to one side of the inner wall of the hollow ring plate (62); a ventilation clamping plate (67) is fixedly connected to one side of the hollow ring plate (62); and a ventilation clamping plate (68) is fixedly connected to one side of the hollow ring plate (62). 8), a lifting plate (69) is provided on the side of the hollow ring plate (62) away from the ventilation clamp plate (67), one side of the hollow ring plate (62) is connected to an air pipe (610), and one end of the air pipe (610) away from the hollow ring plate (62) is connected to an air pump (611), one side of the lifting plate (69) is fixedly connected to the moving end of the linear electric slide rail (612), the top of the hollow ring plate (62) is fixedly connected to a ring plate (613), one side of the ring plate (613) is provided with a feeding hole (614), one end of the fixed rod (615) is fixedly connected to a scraper (616), and the top of the scraper (616) is fixedly connected to a semi-ring baffle (617).

7. The agricultural drone fertilizer granule spreading device according to claim 6, characterized in that: The bottom of the filter plate (61) is fixedly connected to the top of the connecting ring plate (41), and the top of the ring plate (613) is fixedly connected to the inner wall of the housing (1).

8. The fertilizer granule spreading device for agricultural drone according to claim 6, characterized in that: The side of the linear electric slide rail (612) away from the lifting plate (69) is fixedly connected to the inner wall of the shell (1), and the end of the fixing rod (615) away from the scraper (616) is fixedly connected to the round rod (47).

9. The agricultural drone fertilizer granule spreading device according to claim 6, characterized in that: One side of the filter plate (61) passes through the round rod (47) and is rotatably connected to the round rod (47); the bottom of the air pump (611) is fixedly connected to the bottom of the inner wall of the housing (1).

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