Agricultural fertilizer applicator

By combining a four-way tube and a counter-current atomizing component, the problem of uneven fertilization in traditional fertilization tools is solved, achieving uniform application and controllable atomization of fertilizer, thereby improving crop yield and economic benefits.

CN224124660UActive Publication Date: 2026-04-17NANJING RUNNONG PRECISION IRRIGATION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING RUNNONG PRECISION IRRIGATION TECHNOLOGY CO LTD
Filing Date
2025-05-23
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Traditional fertilization tools often result in uneven fertilization, leading to nutrient accumulation or deficiency in certain areas, which affects crop yield. Furthermore, it is difficult to adjust the atomization range, resulting in fertilizer waste and fertilizer damage.

Method used

It adopts a four-way pipe structure and a counter-flushing atomizing component, and achieves uniform mixing and controllable atomization of fertilizer and water through the combination of DC nozzle and counter-flushing nozzle, combined with flow control ring and stirring and conveying component. The nozzle angle can be adjusted to meet the needs of different crops.

Benefits of technology

It achieves uniform application of fertilizer, reduces fertilizer damage, improves the uniformity of fertilization and the controllability of coverage, and avoids fertilizer loss and waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an agricultural fertilizer distributor, which belongs to the technical field of fertilizer distributors and comprises a hopper, a motor arranged at the top end of the hopper, the bottom end of the motor fixedly connected to the top end of the hopper, two feed ports symmetrically formed in the top end of the hopper, a stirring and conveying component arranged at the lower end of the hopper, and a flow control ring connected to the bottom end of the stirring and conveying component. The bottom of the flow control ring is communicated with a four-way pipe, the top end of a vertical pipe of the four-way pipe is fixedly connected with the bottom of the flow control ring, one end of a transverse pipe of the four-way pipe is fixedly connected with a first positioning ring, one side of the first positioning ring is fixedly connected with a clamping seat, and the other end of the transverse pipe of the four-way pipe is slidably connected with a second positioning ring. A notch is formed in the position, corresponding to the clamping seat, of the outer wall of one side of the second positioning ring, the clamping seat is arranged in the notch of the second positioning ring in a penetrating mode, a plurality of opposite-flushing atomization components are arranged on the outer wall of a transverse pipe of the four-way pipe in a surrounding mode along the axis, a direct-flow nozzle is fixedly connected to the top end of the transverse pipe of the four-way pipe, secondary atomization of fertilizer water is achieved, and fertilization is more uniform.
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Description

Technical Field

[0001] This utility model belongs to the field of fertilizer applicator technology, and in particular relates to an agricultural fertilizer applicator. Background Technology

[0002] Fertilization refers to the application of fertilizers to the soil or spraying them on plants to provide the nutrients needed by the plants and to maintain and improve soil fertility. In agricultural production, fertilization is a key measure to increase crop yield, improve crop quality, enrich soil fertility, and improve economic benefits. Depending on the timing of fertilization, it can be divided into base fertilizer and top dressing. Depending on the fertilization method, it can be divided into broadcasting, fertigation, hole application, and strip application.

[0003] In the traditional agricultural fertilization process, uneven fertilizer application can lead to nutrient accumulation in local areas or insufficient water usage during irrigation after fertilization. These issues can cause a significant increase in soil solution osmotic pressure, making it prone to fertilizer damage such as seedling burn and root damage. In addition, traditional fertilization tools are usually single-nozzle atomizers with a fixed coverage area, making it difficult to adjust for different crops. Furthermore, the atomization density at the edges is significantly reduced, resulting in poor fertilization uniformity and affecting crop yield. Utility Model Content

[0004] The purpose of this utility model is to propose an agricultural fertilizer applicator to solve the problems of uneven fertilization and fertilizer waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an agricultural fertilizer applicator, comprising a hopper, a motor mounted on the top of the hopper, the bottom of the motor fixedly connected to the top of the hopper, two symmetrical feed inlets on the top of the hopper, a mixing and conveying component mounted on the lower end of the hopper, a flow control ring connected to the bottom of the mixing and conveying component, a four-way pipe connected to the bottom of the flow control ring, the four-way pipe comprising a vertical pipe and three horizontal pipes, the bottom of the vertical pipe of the four-way pipe connected to one end of the three horizontal pipes, the top of the vertical pipe of the four-way pipe fixedly connected to the bottom of the flow control ring, a first positioning ring fixedly connected to one end of the horizontal pipe of the four-way pipe, a retaining seat fixedly connected to one side of the first positioning ring, a second positioning ring slidably connected to the other end of the horizontal pipe of the four-way pipe, a slot opened on one side of the outer wall of the second positioning ring corresponding to the retaining seat, the retaining seat passing through the slot of the second positioning ring, multiple opposing atomizing components arranged around the outer wall of the horizontal pipe of the four-way pipe along the axis, and a DC nozzle fixedly connected to the top of the horizontal pipe of the four-way pipe.

[0006] As a further description of the above technical solution:

[0007] The mixing and conveying component includes a conveying pipe, a suspension frame is fixedly connected to the outer wall of the conveying pipe, a rotating shaft is provided inside the conveying pipe, a spiral blade is connected around the outer wall of the rotating shaft, a connecting shaft is fixedly connected to the top of the rotating shaft, and the top of the connecting shaft is fixedly connected to the output end of the motor.

[0008] As a further description of the above technical solution:

[0009] The counter-flushing atomizing component includes a connecting rod. A first connecting frame and a second connecting frame are rotatably connected to one end and the middle of the connecting rod, respectively. The first connecting frame is rotatably connected to the end of the connecting rod via a pin, and the second connecting frame is rotatably connected to the middle of the connecting rod via a pin. Two guide wheels are fixedly connected to both ends of the connecting rod on the side away from the DC nozzle. A counter-flushing nozzle is fixedly connected to the end of the connecting rod on the side closer to the DC nozzle via the rod body. An infusion tube is connected to the bottom end of the counter-flushing nozzle. One end of the infusion tube passes through the two guide wheels in sequence and is connected to the horizontal tube of the four-way pipe.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the first positioning ring is surrounded by multiple fixing blocks, and the outer walls on both sides of the fixing blocks are rotatably connected to the first connecting frame via rotating shafts. The outer wall of the second positioning ring is surrounded by multiple protrusions, and the outer walls on both sides of the protrusions are rotatably connected to the second connecting frame via rotating shafts.

[0012] As a further description of the above technical solution:

[0013] The counter-current nozzles are arranged around the outside of the DC nozzle along the axis, and the intersection point of the axes of the three counter-current nozzles is always on the axis of the DC nozzle.

[0014] As a further description of the above technical solution:

[0015] The included angle between the three adjacent horizontal pipes below the four-way pipe is 120 degrees, and the included angle between the adjacent axes of the three opposing nozzles is 120 degrees.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, fertilizer water flows into the DC nozzle through the four-way pipe horizontal tube. The DC nozzle atomizes the fertilizer water once. Three opposing atomizing devices are arranged around the four-way pipe horizontal tube along its axis. The opposing atomizing devices include opposing nozzles. The intersection of the axes of the three opposing nozzles is on the axis of the DC nozzle. At the same time as the fertilizer water is sprayed from the DC nozzle, it is also sprayed out from the opposing nozzles simultaneously. The water flow of the two collides with each other, which further breaks the fertilizer water droplets into smaller droplets, realizing secondary atomization of the fertilizer water. This makes the fertilizer application more uniform and reduces the probability of fertilizer damage. Adjusting the position of the second positioning ring can adjust the angle of the opposing nozzles, thereby changing the collision angle of the water flow and changing the atomization range. This allows the fertilizer water mist range to completely cover the crops that need fertilization, realizing controllable atomization range.

[0018] 2. In this utility model, fertilizer and water are initially mixed in the hopper and then enter the mixing and conveying component. The rotating shaft of the conveying component rotates with the motor, and the rotating shaft drives the spiral blade to rotate at high speed, which fully mixes the water and fertilizer that enters it, avoiding fertilizer loss caused by applying fertilizer first and then irrigating in the traditional fertilization process. At the same time, a flow control ring is set at the bottom of the mixing and conveying component, which can adjust the flow rate and velocity of the fertilizer water flowing into the four-way pipe, thereby adjusting the amount of atomized spray. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of an agricultural fertilizer applicator proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the main disassembled structure of an agricultural fertilizer applicator proposed in this utility model;

[0021] Figure 3 This is a half-sectional structural diagram of the mixing and conveying component of an agricultural fertilizer applicator proposed in this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the counter-atomizing component of an agricultural fertilizer applicator proposed in this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly structure of an agricultural fertilizer applicator proposed in this utility model.

[0024] Legend: 1. Hopper; 2. Motor; 3. Feed inlet; 4. Mixing and conveying component; 401. Conveying pipe; 402. Spiral blade; 403. Rotating shaft; 404. Connecting shaft; 5. Flow control ring; 6. Four-way pipe; 7. First positioning ring; 8. Second positioning ring; 9. Counter-flush atomizing component; 901. First connecting frame; 902. Second connecting frame; 903. Connecting rod; 904. Guide wheel; 905. Counter-flush nozzle; 906. Infusion pipe; 10. Direct current nozzle; 11. Card holder; 12. Suspension frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This utility model provides a technical solution: an agricultural fertilizer applicator, including a hopper 1, a motor 2 at the top of the hopper 1, the bottom of the motor 2 being fixedly connected to the top of the hopper 1, two symmetrical feed inlets 3 at the top of the hopper 1, a mixing and conveying component 4 at the bottom of the hopper 1, a flow control ring 5 connected to the bottom of the mixing and conveying component 4, and a four-way pipe 6 connected to the bottom of the flow control ring 5. The four-way pipe 6 includes one vertical pipe and three horizontal pipes, the bottom of the vertical pipe of the four-way pipe 6 being connected to one end of each of the three horizontal pipes. The top end of the tube is fixedly connected to the bottom of the flow control ring 5. One end of the horizontal tube of the four-way tube 6 is fixedly connected to the first positioning ring 7. A retainer 11 is fixedly connected to one side of the first positioning ring 7. The other end of the horizontal tube of the four-way tube 6 is slidably connected to the second positioning ring 8. A slot is opened on one side of the outer wall of the second positioning ring 8 at the corresponding position of the retainer 11. The retainer 11 passes through the slot of the second positioning ring 8. Multiple counter-current atomizing components 9 are arranged around the outer wall of the horizontal tube of the four-way tube 6 along the axis. A DC nozzle 10 is fixedly connected to the top end of the horizontal tube of the four-way tube 6.

[0027] The counter-flushing atomizing component 9 includes a connecting rod 903. A first connecting frame 901 and a second connecting frame 902 are rotatably connected to one end and the middle part of the connecting rod 903, respectively. The first connecting frame 901 is rotatably connected to the end of the connecting rod 903 by a pin, and the second connecting frame 902 is rotatably connected to the middle part of the connecting rod 903 by a pin. Two guide wheels 904 are fixedly connected to both ends of the side of the connecting rod 903 away from the DC nozzle 10. A counter-flushing nozzle 905 is fixedly connected to the end of the connecting rod 903 near the DC nozzle 10 by a rod body. The bottom end of the counter-flushing nozzle 905 is connected to an infusion tube 906. One end of the infusion tube 906 passes through the two guide wheels 904 in sequence and is connected to the horizontal tube of the four-way tube 6.

[0028] The outer wall of the first positioning ring 7 is surrounded by multiple fixing blocks. The outer walls on both sides of the fixing blocks are rotatably connected to the first connecting frame 901 via rotating shafts. The outer wall of the second positioning ring 8 is surrounded by multiple protrusions. The outer walls on both sides of the protrusions are rotatably connected to the second connecting frame 902 via rotating shafts.

[0029] The counter-current nozzles 905 are arranged around the outside of the DC nozzle 10 along the axis, and the intersection point of the axes of the three counter-current nozzles 905 is always on the axis of the DC nozzle 10.

[0030] The included angle between the three adjacent horizontal pipes below the four-way pipe 6 is 120 degrees, and the included angle between the adjacent axes of the three opposing nozzles 905 is also 120 degrees.

[0031] Specifically, multiple slots are continuously formed on one side of the outer wall of the card holder 11. The cross-sectional shape of the slots is a right-angled triangle. The second positioning ring 8 has a slot corresponding to the position of the card holder 11, and the card holder 11 passes through the slot. The top of the inner wall of the slot is provided with a tooth, which also has a right-angled triangle cross-sectional shape. Multiple fixing blocks are arranged around the outer wall of the first positioning ring 7. The outer walls on both sides of the fixing blocks are rotatably connected to one end of the first connecting frame 901 through a rotating shaft. Multiple protrusions are arranged around the outer wall of the second positioning ring 8. The outer walls on both sides of the protrusions are rotatably connected to one end of the second connecting frame 902 through a rotating shaft. The first connecting frame 901 and the second connecting frame 902 are connected together. All are rotatably connected to the end and middle of the connecting rod 903 by pins respectively. The top of the connecting rod 903 is fixedly connected to the anti-flush nozzle 905 by the rod body. When the second positioning ring 8 moves, the connecting rod 903 is driven to move by the second connecting frame 902. The connecting rod 903 drives the anti-flush nozzle 905 to move, so that the angle between the axis of the anti-flush nozzle 905 and the axis of the DC nozzle 10 changes. The card seat 11 and the card tooth are both elastic components. When the second positioning ring 8 moves a specified distance, the card tooth is pushed into the card slot, so that the position of the second positioning ring 8 is fixed. By pressing down the card seat 11 to partially collapse and release the card tooth, the second positioning ring 8 can resume movement.

[0032] Furthermore, the DC nozzle 10 comprises an inlet pipe, a housing, and a spray nozzle. This part is well-known in the field and will not be described further.

[0033] Furthermore, a guide plate is installed inside the horizontal tube of the four-way pipe 6 to divert fertilizer water to the infusion pipe 906. This part is well-known technology in the field and will not be described further.

[0034] In another embodiment, to facilitate real-time adjustment of the atomization range, a single card holder 11 can be set to achieve independent locking, making it convenient for staff to quickly press the contact lock and adjust the front angle.

[0035] The mixing and conveying component 4 includes a conveying pipe 401, a suspension frame 12 fixedly connected to the outer wall of the conveying pipe 401, a rotating shaft 403 inside the conveying pipe 401, a spiral blade 402 connected around the outer wall of the rotating shaft 403, a connecting shaft 404 fixedly connected to the top of the rotating shaft 403, and the top of the connecting shaft 404 fixedly connected to the output end of the motor 2.

[0036] Specifically, a rotating shaft 403 is installed inside the conveying pipe 401. A connecting shaft 404 is fixedly connected to the top of the rotating shaft 403. The top of the connecting shaft 404 is fixedly connected to the output end of the motor 2. When the motor 2 starts, it drives the connecting shaft 404 to rotate, and the connecting shaft 404 drives the rotating shaft 403 to rotate. A spiral blade 402 is connected around the outer wall of the rotating shaft 403. The spiral blade 402 rotates at high speed with the motor 2. Fertilizer and water are put into the hopper 1 from the feed inlet 3 and enter the conveying pipe 401 along the inner wall of the hopper 1. The high-speed rotating spiral blade 402 mixes the fertilizer and water and conveys them downward through centrifugal force. The flow rate and velocity of fertilizer and water entering the four-way pipe 6 are controlled by adjusting the opening size of the inner diameter of the flow control ring 5.

[0037] Furthermore, the selection of motor 2 can be set according to needs. Motor 2 is controlled by PLC. This part is well-known technology in the field and will not be elaborated further.

[0038] Furthermore, the flow control ring 5 has an iris structure inside, which is a well-known technology in the field and will not be described further.

[0039] Working principle: When in use, the fertilizer applicator is fixed and suspended above the crops that need fertilization by the suspension frame 12. The operator presses down the card seat 11 to release the second positioning ring 8, moves the second positioning ring 8 to the designated position and locks it. The inner diameter of the flow control ring 5 is adjusted to the designated size, and then the motor 2 is started. Fertilizer and water are injected into the hopper 1 from the feed inlet 3 respectively. After the fertilizer and water are stirred into liquid fertilizer, they are atomized at the direct flow nozzle 10 and the counter-flow nozzle 905 and evenly cover the crops. When it is necessary to adjust the atomization amount, the inner diameter of the flow control ring 5 is adjusted. When it is necessary to adjust the atomization range, the position of the second positioning ring 8 is adjusted.

[0040] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An agricultural fertilizer applicator comprising a hopper (1), characterized in that, A motor (2) is installed at the top of the hopper (1), and the bottom of the motor (2) is fixedly connected to the top of the hopper (1). Two feed inlets (3) are symmetrically opened at the top of the hopper (1). A stirring and conveying component (4) is installed at the bottom of the hopper (1). A flow control ring (5) is connected to the bottom of the stirring and conveying component (4). A four-way pipe (6) is connected to the bottom of the flow control ring (5). The four-way pipe (6) includes one vertical pipe and three horizontal pipes. The bottom of the vertical pipe of the four-way pipe (6) is connected to one end of the three horizontal pipes. The top of the vertical pipe of the four-way pipe (6) is connected to the bottom of the flow control ring (5). The four-way pipe (6) is fixedly connected to a first positioning ring (7) at one end, and a card seat (11) is fixedly connected to one side of the first positioning ring (7). The other end of the four-way pipe (6) is slidably connected to a second positioning ring (8). A slot is opened on one side of the outer wall of the second positioning ring (8) corresponding to the position of the card seat (11). The card seat (11) passes through the slot of the second positioning ring (8). Multiple counter-atomizing components (9) are arranged around the outer wall of the four-way pipe (6) along the axis. A DC nozzle (10) is fixedly connected to the top of the four-way pipe (6).

2. An agricultural fertilizer applicator as claimed in claim 1 wherein, The stirring and conveying component (4) includes a conveying pipe (401), a suspension frame (12) is fixedly connected to the outer wall of the conveying pipe (401), a rotating shaft (403) is provided inside the conveying pipe (401), a spiral blade (402) is connected around the outer wall of the rotating shaft (403), a connecting shaft (404) is fixedly connected to the top of the rotating shaft (403), and the top of the connecting shaft (404) is fixedly connected to the output end of the motor (2).

3. An agricultural fertilizer applicator as claimed in claim 1 wherein, The counter-flushing atomizing component (9) includes a connecting rod (903). The first connecting frame (901) and the second connecting frame (902) are rotatably connected to the end and middle of one side of the connecting rod (903), respectively. The first connecting frame (901) is rotatably connected to the end of the connecting rod (903) through a pin. The second connecting frame (902) is rotatably connected to the middle of the connecting rod (903) through a pin. Two guide wheels (904) are fixedly connected to both ends of the side of the connecting rod (903) away from the DC nozzle (10). The counter-flushing nozzle (905) is fixedly connected to the end of the connecting rod (903) near the DC nozzle (10) through the rod body. The bottom end of the counter-flushing nozzle (905) is connected to an infusion tube (906). One end of the infusion tube (906) passes through the two guide wheels (904) in sequence and is connected to the horizontal tube of the four-way tube (6).

4. An agricultural fertilizer applicator as claimed in claim 3 wherein, The outer wall of the first positioning ring (7) is surrounded by multiple fixing blocks. The outer walls on both sides of the fixing blocks are rotatably connected to the first connecting frame (901) via rotating shafts. The outer wall of the second positioning ring (8) is surrounded by multiple protrusions. The outer walls on both sides of the protrusions are rotatably connected to the second connecting frame (902) via rotating shafts.

5. An agricultural fertilizer applicator as claimed in claim 3 wherein, The counter-jet nozzles (905) are arranged around the outside of the DC nozzle (10) along the axis, and the intersection point of the axes of the three counter-jet nozzles (905) is always on the axis of the DC nozzle (10).

6. An agricultural fertilizer applicator as claimed in claim 1 wherein, The included angle between the three horizontal pipes adjacent to each other below the four-way pipe (6) is 120 degrees, and the included angle between the axes of the three impinging nozzles (905) adjacent to each other is 120 degrees.