A rice fixed-point quantitative deep fertilization device
By installing spiral blades and scraper components on the rice transplanter, the problem of easy clogging at the fertilizer outlet of the side-deep fertilizer applicator was solved, achieving smooth fertilizer discharge and efficient fertilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANGSHAN YI AUTONOMOUS PREFECTURE ACAD OF AGRI SCI
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-16
AI Technical Summary
The fertilizer outlet of existing side-deep fertilizer applicators is easily blocked by soil, and fertilizer tends to adhere to the inner wall, causing blockage and affecting the fertilization effect.
A device for fixed-point and quantitative deep fertilization of rice was designed, which includes spiral blades and scraper assembly. The spiral blades rotate to scrape away the soil and slurry on the inner wall of the fertilizer delivery pipe, and the scraper scrapes away the soil at the bottom to prevent blockage.
It effectively prevents the fertilizer outlet from being blocked by soil, ensuring smooth fertilizer discharge, improving fertilization efficiency, and avoiding fertilizer accumulation and blockage.
Smart Images

Figure CN224356676U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural production equipment, and in particular relates to a device for fixed-point and quantitative deep fertilization of rice. Background Technology
[0002] Rice is an important food crop, thriving in warm and moist conditions. Varieties include indica and japonica rice. After cultivation, management, harvesting, and processing, it provides staple food for more than half of the world's population. Side-deep fertilization is a precision fertilization technique that uses fertilization machinery to apply fertilizer to the soil at a specific depth and location during crop planting (such as rice transplanting), placing the fertilizer in an area easily absorbed by the roots. It improves fertilizer utilization, promotes crop growth, reduces pollution, and saves labor and costs, showing promising application prospects.
[0003] In recent years, rice transplanters have often been equipped with side-deep fertilizer applicators, which can simultaneously apply fertilizer to the soil on one side of the seedlings during transplanting. However, existing side-deep fertilizer applicators have some drawbacks: because the fertilizer outlet of the existing side-deep fertilizer applicator is inserted into the paddy field soil during use, the outlet is easily blocked by mud. At the same time, mud also easily adheres to the inner wall of the fertilizer outlet, causing fertilizer to stick to the inner wall, resulting in fertilizer accumulation and eventually clogging the outlet, seriously affecting the fertilization effect. Utility Model Content
[0004] The purpose of this invention is to provide a rice fixed-point and quantitative deep fertilization device that can prevent the fertilizer outlet from being blocked by soil and prevent fertilizer from clogging the fertilizer outlet.
[0005] The rice fixed-point quantitative deep fertilization device includes a side-deep fertilizer body. A fertilization component is provided at the end of the fertilizer inlet pipe of the side-deep fertilizer body. The fertilization component includes a vertically arranged fertilizer delivery pipe. The end of the fertilizer inlet pipe is connected to the outer wall of the fertilizer delivery pipe and communicates with its interior. A furrowing shovel is fixed at the lower end of the outer wall of the fertilizer delivery pipe. An installation component for mounting the fertilizer delivery pipe on a rice transplanter is provided. A spiral blade is installed inside the fertilizer delivery pipe. A scraper that fits against the bottom of the fertilizer delivery pipe is horizontally fixed at the bottom of the spiral blade. A drive component for driving the spiral blade to rotate is installed on the fertilizer delivery pipe.
[0006] Furthermore, the installation assembly includes an installation plate, a movable sleeve that can move up and down is fitted on the fertilizer delivery pipe, screws are fitted on the movable sleeve to lock it, the installation plate is horizontally fixed on the movable sleeve, and the installation plate has several through holes that communicate vertically.
[0007] Furthermore, a reinforcing rib is provided between the bottom of the mounting plate and the movable sleeve.
[0008] Furthermore, the drive assembly includes a motor, several support rods are vertically fixed on the outer side wall of the spiral blade, a connecting rod is horizontally fixed between the tops of all the support rods, a rotating shaft aligned with the axis of the spiral blade is vertically fixed on the top of the connecting rod, a support plate is detachably fixed on the top of the fertilizer conveying pipe, the motor is mounted on the support plate, and the upper end of the rotating shaft passes through the support plate and is connected to the output end of the motor.
[0009] Furthermore, the bottom of the scraper is provided at an angle to the side wall in the direction of rotation.
[0010] Furthermore, two mud guide plates are fixed on the two side walls of the trenching shovel, and the lower end of the fertilizer conveying pipe is located between the two mud guide plates.
[0011] Furthermore, the bottom of the fertilizer delivery pipe is higher than the bottom of the trenching shovel.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] This fertilizer applicator is installed on a riding rice transplanter using the installation assembly. When soil adheres to the inner wall of the fertilizer delivery pipe, the drive assembly rotates the spiral blades inside the pipe. The spiral blades scrape away the soil and slurry adhering to the inner wall, preventing fertilizer from adhering to the pipe through the soil and slurry. Simultaneously, the spiral blades push the soil and slurry entering the pipe towards the fertilizer outlet at the bottom, pushing them out of the pipe and preventing the outlet from being blocked by soil. As the spiral blades rotate, they also drive the scraper to rotate, scraping away the soil adhering to the bottom of the pipe, preventing soil from accumulating at the bottom and blocking the fertilizer outlet. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a bottom view of the present invention;
[0016] Figure 3 This is a perspective view of the present utility model;
[0017] Figure 4 This is an exploded view of the present invention;
[0018] The components in the diagram are named as follows: 1. Fertilizer inlet pipe; 2. Motor; 3. Support plate; 4. Fertilizer delivery pipe; 5. Rotating shaft; 6. Connecting rod; 7. Spiral blade; 8. Mounting plate; 9. Moving sleeve; 10. Support rod; 11. Trenching shovel; 12. Scraper; 13. Guide plate. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0020] Example
[0021] This embodiment describes a rice fixed-point and quantitative deep fertilization device, such as... Figure 1 , Figure 2 and Figure 4 As shown, the device includes the main body of a side-deep fertilizer applicator. This is an existing product, typically used in conjunction with a ride-on rice transplanter. During rice transplanting, a specific fertilization device applies fertilizer quantitatively and precisely to the soil at a certain depth and distance beside the seedlings. The side-deep fertilizer applicator consists of a fertilizer tank, a fertilizer discharge component (blowing type uses engine hot air to create an airflow to blow fertilizer; mechanical type uses a screw conveyor to force fertilizer discharge; and electronically controlled screw type uses an electronic intelligent control device to set the discharge volume, with a DC motor driving the screw to rotate and discharge fertilizer), a transmission module (composed of a motor, drive shaft, and coupling, providing power to the fertilizer application component), a fertilizer inlet pipe, fertilizer application components, and a furrow opener, etc.
[0022] The fertilizer inlet pipe 1 of the side-deep fertilizer applicator body is equipped with a fertilizer applicator assembly at its end; the fertilizer applicator assembly includes a vertically arranged fertilizer delivery pipe 4, such as... Figure 2 and Figure 4 As shown, fertilizer delivery pipe 4 has a circular tubular structure;
[0023] The end of fertilizer inlet pipe 1 is connected to the outer wall of fertilizer delivery pipe 4 and communicates with its interior, such as... Figure 1 As shown, fertilizer in the fertilizer box can be transported to fertilizer delivery pipe 4 through fertilizer inlet pipe 1; the end of fertilizer inlet pipe 1 is connected to the upper half of fertilizer delivery pipe 4, and the connection between fertilizer inlet pipe 1 and fertilizer delivery pipe 4 is located above the spiral blade 7, so as to avoid the fertilizer being blocked by the rotating spiral blade 7 when entering fertilizer delivery pipe 4, and allow the fertilizer to enter fertilizer delivery pipe 4 more smoothly.
[0024] A trenching shovel 11 is fixed to the lower end of the outer wall of the fertilizer delivery pipe 4; during use, the trenching shovel 11 digs a trench of a certain depth in the paddy field soil so that fertilizer can be applied into the soil on the side of the seedlings; such as Figure 1 As shown, the bottom of the fertilizer delivery pipe 4 is higher than the bottom of the trenching shovel 11 to leave a gap between the bottom of the fertilizer delivery pipe 4 and the bottom of the trench, so as to prevent the soil at the bottom of the trench from expanding and bulging upward. By widening the gap between the fertilizer outlet and the bottom of the trench, the probability of the soil expanding and bulging upward and blocking the fertilizer outlet is effectively reduced.
[0025] Two guide plates 13 are fixed on both sides of the trenching shovel 11, and the lower end of the fertilizer conveying pipe 4 is located between the two guide plates 13; Figure 2As shown, two guide plates 13 are fixed at an angle on the front and rear side walls of the trenching shovel 11, so that the two guide plates 13 are combined into a V-shaped structure, and the lower end of the fertilizer delivery pipe 4 is located between the two guide plates 13. During use, when the trenching shovel 11 digs trenches in the paddy field soil, the two guide plates 13 can block the soil on both sides of the fertilizer delivery pipe 4, prevent the soil from being squeezed towards the fertilizer outlet of the fertilizer delivery pipe 4, and guide the soil to both sides through the two guide plates 13, effectively reducing the probability of the fertilizer outlet of the fertilizer delivery pipe 4 being blocked by soil.
[0026] To elaborate further, such as Figure 1 and Figure 4 As shown, in this embodiment, a preferred embodiment includes an mounting plate 8, and a movable sleeve 9 that can move up and down is fitted onto the fertilizer delivery pipe 4. A large gap exists between the inner wall of the movable sleeve 9 and the outer wall of the fertilizer delivery pipe 4, allowing the movable sleeve 9 to move up and down along the fertilizer delivery pipe 4 to adjust the depth of the lower end of the fertilizer delivery pipe 4 into the paddy field soil. The large gap is mainly used to prevent interference from the soil (of course, if soil is present in the gap, it can be flushed away with water to avoid affecting the up and down movement of the fertilizer delivery pipe 4). A screw is fitted onto the movable sleeve 9 for locking, and the sleeve 9 has internally and externally connected threaded holes on its wall. Figure 1 and Figure 4 As shown, the screw passes through the threaded hole and is threadedly engaged with it. When the movable sleeve 9 moves to the appropriate position, the screw is rotated to press it tightly against the fertilizer delivery pipe 4, thereby locking the moved movable sleeve 9. The mounting plate 8 is horizontally fixed on the movable sleeve 9, and the mounting plate 8 has several through holes that communicate vertically. Figure 1As shown, the mounting plate 8 is horizontally fixed to the outer wall of the movable sleeve 9. Reinforcing ribs are provided between the bottom of the mounting plate 8 and the movable sleeve 9. These ribs enhance the structural strength between the mounting plate 8 and the movable sleeve 9, improve stability, distribute stress, and reduce deformation and vibration. In use, screws are inserted into the through holes on the mounting plate 8 to fix it to the riding-type rice transplanter. Then, according to the required fertilization depth, the fertilizer delivery pipe 4 is adjusted up and down until its lower end is inserted into the soil to a suitable depth. The screws are then turned to firmly press against the fertilizer delivery pipe 4, locking the moved pipe 4 in place. This fertilization assembly is then installed on the riding-type rice transplanter. This overall solution constitutes a fertilization assembly... The mounting assembly is installed on a rice transplanter; alternatively, the mounting assembly can use a sliding sleeve with guide rails that cooperate with each other. The guide rails are fixed to the outer wall of the fertilizer delivery pipe 4, and screws are installed on the sliding sleeve to lock it. A mounting plate 8 is horizontally fixed on the sliding sleeve, and the mounting plate 8 has several through holes that are connected vertically. In use, the screws are inserted into the through holes on the mounting plate 8, and the mounting plate 8 is fixed to the riding rice transplanter by the screws. Then, according to the required fertilization depth, the fertilizer delivery pipe 4 is adjusted vertically so that the lower end of the fertilizer delivery pipe 4 is inserted into the soil to a suitable depth. The screws are then turned so that they press tightly against the fertilizer delivery pipe 4 to lock the moved fertilizer delivery pipe 4, and the fertilization assembly is installed on the riding rice transplanter.
[0027] The fertilizer delivery pipe 4 is fitted with spiral blades 7; for example Figure 1 and Figure 4 As shown, the structure of the spiral blade 7 is the same as that of the existing shaftless auger structure. The outer wall of the spiral blade 7 is attached to the inner wall of the fertilizer conveying pipe 4. Therefore, when the spiral blade 7 rotates inside the fertilizer conveying pipe 4, the spiral blade 7 can scrape the soil and slurry attached to the inner wall of the fertilizer conveying pipe 4. The spiral blade 7 can scrape off the soil and slurry on the inner wall of the fertilizer conveying pipe 4 to prevent fertilizer from adhering to the inner wall of the fertilizer conveying pipe 4 through the soil and slurry. At the same time, the spiral blade 7 will push the soil and slurry entering the fertilizer conveying pipe 4 towards the fertilizer outlet at the lower end of the fertilizer conveying pipe 4, and push the soil and slurry out of the fertilizer conveying pipe 4 to prevent the soil from clogging the fertilizer outlet. Of course, the spiral blade 7 can also convey fertilizer towards the fertilizer outlet to prevent fertilizer from accumulating at the fertilizer outlet.
[0028] A scraper 12, which fits against the bottom of the fertilizer delivery pipe 4, is horizontally fixed to the bottom of the spiral blade 7; for example... Figure 1 , Figure 2 and Figure 4 As shown, when the spiral blade 7 rotates, it drives the scraper 12 to rotate, scraping off the soil adhering to the bottom of the fertilizer delivery pipe 4, preventing soil from accumulating at the bottom of the fertilizer delivery pipe 4 and preventing soil from clogging the fertilizer outlet at the lower end of the fertilizer delivery pipe 4, allowing the fertilizer in the fertilizer delivery pipe 4 to be smoothly discharged into the trench; the bottom of the scraper 12 is provided at an angle to the side wall in the direction of rotation, such as... Figure 1As shown, the scraper 12 has an angled opening at the corner between the bottom and the front and rear side walls, making the scraper 12 blade-shaped. The angled opening makes the force-bearing area when the scraper 12 contacts the object being scraped very small. When the scraper 12 rotates, it can cut into the soil more easily, and the sloped surface can guide the soil to fall off.
[0029] To elaborate further, such as Figure 1 and Figure 4 As shown, in this preferred embodiment, a plurality of support rods 10 are vertically fixed on the outer wall of the helical blade 7, including the motor 2; as shown... Figure 1 and Figure 4 As shown, in this embodiment, two support rods 10 are symmetrically distributed on the left and right sides. The two support rods 10 are located on the left and right sides of the spiral blade 7 and fixed to the spiral blade 7. The two support rods 10 support the spiral blade 7, enhancing its structural strength and preventing easy deformation or breakage. A connecting rod 6 is horizontally fixed between the tops of all the support rods 10. Figure 1 and Figure 4 As shown, the connecting rod 6 is located between the tops of the two support rods 10, connecting the tops of the two support rods 10; a rotating shaft 5 aligned with the axis of the spiral blade 7 is vertically fixed to the top of the connecting rod 6; as shown... Figure 1 As shown, the bottom of the rotating shaft 5 is fixed at the center of the top of the connecting rod 6, and the axis of the rotating shaft 5 is aligned with the axis of the spiral blade 7. Therefore, when the rotating shaft 5 rotates, it can drive the spiral blade 7 to rotate. The top of the fertilizer delivery pipe 4 is detachably fixed with a support plate 3, such as... Figure 1 and Figure 4 As shown, the support plate 3 is fixed to the top of the fertilizer conveying pipe 4 by four screws, thus facilitating the assembly and disassembly of the support plate 3; the motor 2 is mounted on the support plate 3, and the upper end of the rotating shaft 5 passes through the support plate 3 and is connected to the output end of the motor 2; as shown... Figure 1 and Figure 4As shown, the support plate 3 has a through hole for the upper end of the rotating shaft 5 to pass through. The upper end of the rotating shaft 5 is connected to the output end of the motor via a coupling. When the motor is turned on, the output end of the motor rotates, driving the rotating shaft 5 to rotate. The rotating shaft 5 drives the two support rods 10 to rotate via the connecting rod 6. The two support rods 10 then drive the spiral blades 7 to rotate. During rotation, the spiral blades 7 scrape off the soil on the inner wall of the fertilizer delivery pipe 4 and the soil entering the fertilizer outlet and push it out of the fertilizer delivery pipe 4, preventing the fertilizer outlet from being blocked by soil. This scheme constitutes a drive assembly for driving the spiral blades 7 to rotate. Of course, the drive assembly can also use two mutually meshing... The fertilizer conveying pipe 4 has a gear and an inner tube fixed to the upper end of the spiral blade 7. A gear is fitted on the inner tube. A clearance groove is opened on the inner wall of the fertilizer conveying pipe 4 to avoid the gear. A motor is installed on the outer wall of the fertilizer conveying pipe 4. Another gear is installed on the output end of the motor. An opening communicating with the clearance groove is opened on the outer wall of the fertilizer conveying pipe 4. When in use, the motor drives the gear on it to rotate. Through the meshing of the two gears, the inner tube is driven to rotate. The inner tube drives the spiral blade 7 to rotate inside the fertilizer conveying pipe 4. The spiral blade 7 scrapes off the soil on the inner wall of the fertilizer conveying pipe 4 and the soil entering the fertilizer outlet and pushes it out of the fertilizer conveying pipe 4 to prevent the fertilizer outlet from being blocked by soil.
[0030] In actual use, screws are inserted into the through holes on the mounting plate 8 to fix the mounting plate 8 to the riding rice transplanter. Then, according to the required fertilization depth, the fertilizer delivery pipe 4 is adjusted up and down so that the lower end of the fertilizer delivery pipe 4 and the furrowing shovel 11 are inserted into the soil to a suitable depth. The screws are then turned to firmly press against the fertilizer delivery pipe 4, locking the moved fertilizer delivery pipe 4 in place. This fertilization assembly is then installed on the riding rice transplanter. During fertilization, fertilizer is discharged into the fertilizer delivery pipe 4 from the fertilizer inlet pipe 1. The fertilizer falls downwards along the fertilizer delivery pipe 4 until it exits from the fertilizer outlet at the lower end of the fertilizer delivery pipe 4 into the trench opened by the furrowing shovel 11. When soil adheres to the inner wall of the fertilizer delivery pipe 4, the motor 2 drives the rotating shaft 5 to rotate. The rotating shaft 5 drives the two support rods 10 to rotate via the connecting rod 6. Rod 10 drives the spiral blades 7 to rotate. The spiral blades 7 can scrape the soil and slurry adhering to the inner wall of the fertilizer delivery pipe 4, thus preventing fertilizer from adhering to the inner wall of the fertilizer delivery pipe 4 through the soil and slurry. At the same time, the spiral blades 7 will push the soil and slurry entering the fertilizer delivery pipe 4 towards the fertilizer outlet at the lower end of the fertilizer delivery pipe 4, thus pushing the soil and slurry out of the fertilizer delivery pipe 4 and preventing the soil from clogging the fertilizer outlet. When the spiral blades 7 rotate, they will drive the scraper 12 to rotate, thus scraping off the soil adhering to the bottom of the fertilizer delivery pipe 4, preventing the soil from accumulating at the bottom of the fertilizer delivery pipe 4 and clogging the fertilizer outlet at the lower end of the fertilizer delivery pipe 4. Of course, the spiral blades 7 can also transport fertilizer towards the fertilizer outlet, preventing fertilizer from accumulating at the fertilizer outlet.
Claims
1. A rice fixed-point and quantitative deep fertilization device, comprising a side-deep fertilization machine body, characterized in that: The fertilizer inlet pipe (1) of the side-deep fertilizer applicator body is provided with a fertilizer applicator assembly at the end; the fertilizer applicator assembly includes a vertically arranged fertilizer delivery pipe (4), the end of the fertilizer inlet pipe (1) is connected to the outer wall of the fertilizer delivery pipe (4) and communicates with its interior, a furrowing shovel (11) is fixed at the lower end of the outer wall of the fertilizer delivery pipe (4), an installation assembly is provided on the fertilizer delivery pipe (4) to install it on a rice transplanter, a spiral blade (7) is inserted inside the fertilizer delivery pipe (4), a scraper (12) is horizontally fixed at the bottom of the spiral blade (7) and fits against the bottom of the fertilizer delivery pipe (4), and a drive assembly for driving the spiral blade (7) to rotate is installed on the fertilizer delivery pipe (4).
2. The rice fixed-point and quantitative deep fertilization device according to claim 1, characterized in that: The installation assembly includes an installation plate (8), a movable sleeve (9) that can move up and down is fitted on the fertilizer delivery pipe (4), and screws that lock the movable sleeve (9) are installed on the movable sleeve (9). The installation plate (8) is horizontally fixed on the movable sleeve (9), and several through holes that are connected vertically are opened on the installation plate (8).
3. The rice fixed-point and quantitative deep fertilization device according to claim 2, characterized in that: A reinforcing rib is provided between the bottom of the mounting plate (8) and the movable sleeve (9).
4. The rice fixed-point and quantitative deep fertilization device according to claim 1, characterized in that: The drive assembly includes a motor (2), several support rods (10) are vertically fixed on the outer side wall of the spiral blade (7), a connecting rod (6) is horizontally fixed between the tops of all the support rods (10), a rotating shaft (5) aligned with the axis of the spiral blade (7) is vertically fixed on the top of the connecting rod (6), a support plate (3) is detachably fixed on the top of the fertilizer conveying pipe (4), the motor (2) is mounted on the support plate (3), and the upper end of the rotating shaft (5) passes through the support plate (3) and is connected to the output end of the motor (2).
5. The rice fixed-point and quantitative deep fertilization device according to claim 1, characterized in that: The scraper (12) has an angled opening at the bottom and on the side wall in the direction of rotation.
6. The rice fixed-point and quantitative deep fertilization device according to claim 1, characterized in that: Two mud guide plates (13) are fixed on the two side walls of the trenching shovel (11), and the lower end of the fertilizer conveying pipe (4) is located between the two mud guide plates (13).
7. The rice fixed-point and quantitative deep fertilization device according to claim 1, characterized in that: The bottom of the fertilizer delivery pipe (4) is higher than the bottom of the trenching shovel (11).