Fertilizer application device with adjustable application rate
By designing a combination of storage tanks, adjusting components, and locking components, and using a rotating chassis to select the diameter of the discharge pipe, the problems of cumbersome operation and leakage in traditional fertilizer application devices are solved, enabling rapid adjustment of fertilizer application and precise fertilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN AGRICULTURAL UNIVERSITY
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-23
Smart Images

Figure CN224386210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fertilizer application device technology, and in particular to a fertilizer application device with adjustable fertilizer application rate. Background Technology
[0002] With the continuous development of agricultural technology, the efficiency and precision of fertilization devices have become crucial for improving agricultural productivity and controlling crop yield and quality. Traditional fertilization devices mostly adopt a fixed-aperture discharge structure, and adjusting the fertilizer application rate relies on replacing different specifications of discharge pipes or manually adjusting the valve opening. This is cumbersome and inefficient. For example, some manual fertilization devices require frequent disassembly to replace the discharge pipe, which is not only time-consuming and labor-intensive but also prone to fertilizer leakage and environmental pollution. Existing technologies also allow for manual adjustment of fertilizer application rates, such as the manually adjustable fertilizer applicator for peach trees disclosed in application number 2022200293110. This applicator achieves quantitative fertilization by pulling back the movable handle and ensures that the amount of fertilizer applied each time is consistent. However, its fertilizer inlet cannot be quickly adjusted, leading to the need for frequent replacement of fertilizer discs with different apertures or manual adjustment of the opening size to adjust the fertilizer application rate. Therefore, it is necessary to provide a new adjustable fertilizer application device to solve the above-mentioned technical problems. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a fertilizer application device with adjustable fertilizer application rate.
[0004] The fertilizer application device with adjustable fertilizer application rate provided by this utility model includes a vehicle body, on which a storage tank for storing fertilizer is fixedly mounted, and an eccentric discharge port off-center from the axis is opened at the bottom of the storage tank, and the bottom of the storage tank extends out of a cavity opened in the vehicle body.
[0005] The bottom of the storage tank is equipped with an adjusting component, and the adjusting component includes a chassis. The chassis is rotatably mounted on the bottom of the storage tank via a rotating shaft, and multiple annularly distributed material drop pipes with decreasing apertures are installed on the chassis. An arc-shaped undulating sleeve is fixedly installed on the outer ring wall of the chassis.
[0006] The storage tank is equipped with a locking component. When any of the discharge pipes rotates to be coaxial with the eccentric discharge port, the locking component locks the chassis.
[0007] Preferably, the arc-shaped undulating sleeve is provided with an arc-shaped protrusion and an arc-shaped concave portion, and the arc-shaped protrusion and the arc-shaped concave portion are spaced apart. A transition arc surface is provided at the connection between the arc-shaped protrusion and the arc-shaped concave portion, and a slot is provided at the highest point of the arc-shaped protrusion. The multiple material discharge tubes correspond one-to-one with the provided arc-shaped protrusion.
[0008] Preferably, the locking component includes a fixing ring, which is fixedly sleeved on the storage tank, and the fixing ring has a sliding hole. A sliding rod is inserted into the sliding hole and is slidably connected. A frame is fitted into the bottom of the sliding rod, and a rolling ball is installed in the frame. The ball rolls in contact with the upper surface of the arc-shaped undulating sleeve. A fixing disc is fixedly sleeved on the sliding rod, and a spring is sleeved on the sliding rod.
[0009] Preferably, one end of the spring is fixedly connected to the upper surface of the fixed disk, and the other end of the spring is fixedly connected to the lower surface of the fixed ring.
[0010] Preferably, a pull ring is fixedly installed on the top of the sliding rod.
[0011] Preferably, an annular abutment plate is fixedly installed on the chassis, and the annular abutment plate has a through hole communicating with the material discharge pipe.
[0012] Preferably, the bottom of the storage tank is provided with an annular groove, and the eccentric discharge port is located in the annular groove. The annular abutment plate is inserted into the annular groove and rotatably connected to the annular groove.
[0013] Preferably, a solenoid valve is installed on the material discharge pipe.
[0014] Preferably, a steering wheel is fixedly mounted on the chassis.
[0015] Compared with related technologies, the adjustable fertilizer application device provided by this utility model has the following beneficial effects:
[0016] This invention allows for the selection of different diameter feed pipes by rotating the base, enabling rapid adjustment of fertilizer application without disassembling parts, significantly improving operational efficiency. The designed arc-shaped undulating sleeve works in conjunction with the ball bearings in the locking component to ensure precise alignment between the feed pipe and the eccentric feed inlet, avoiding misalignment during fertilization. Attached Figure Description
[0017] Figure 1 A schematic diagram of a preferred embodiment of the adjustable fertilizer application device provided by this utility model;
[0018] Figure 2 for Figure 1 The diagram shows the structure of the bottom of the storage tank.
[0019] Figure 3 for Figure 1 One of the structural schematic diagrams of the adjustable component shown;
[0020] Figure 4 for Figure 3 The second schematic diagram of the adjustable component is shown.
[0021] Figure 5 for Figure 1 The diagram shows the structure of the locking component. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0024] Please see Figures 1 to 5 This utility model provides an adjustable fertilizer application device, which includes a vehicle body 1, a storage tank 2, an adjustment component 3, and a locking component 4.
[0025] In the embodiments of this utility model, please refer to Figures 1 to 5 A storage tank 2 for storing fertilizer is fixedly mounted on the vehicle body 1, and an eccentric discharge port 2a off-center from the axis is opened at the bottom of the storage tank 2, and the bottom of the storage tank 2 extends out of the cavity 1a opened in the vehicle body 1.
[0026] The bottom of the storage tank 2 is equipped with an adjustment component 3, and the adjustment component 3 includes a chassis 31. The chassis 31 is rotatably mounted on the bottom of the storage tank 2 via a rotating shaft. Multiple annularly distributed drop pipes 33 with decreasing apertures are installed on the chassis 31. A solenoid valve 331 is installed on the drop pipes 33, and a steering wheel 35 is fixedly installed on the chassis 31.
[0027] It should be noted that rotating the steering wheel 35 will drive the chassis 31 to rotate, so that the appropriate inner diameter of the discharge pipe 33 can be used for fertilization according to the needs. The operation is simple and the discharge pipe 33 with different aperture can be quickly replaced to quickly adjust the amount of fertilizer.
[0028] Furthermore, an annular abutment plate 32 is fixedly installed on the chassis 31, and the annular abutment plate 32 has a through hole communicating with the discharge pipe 33. The bottom of the storage tank 2 has an annular groove 2b, and the eccentric discharge port 2a is located in the annular groove 2b. The annular abutment plate 32 is inserted into the annular groove 2b and rotates to connect with the annular groove 2b. Thus, when the discharge pipe 33 rotates away from the eccentric discharge port 2a, the annular abutment plate 32 can block the eccentric discharge port 2a, thereby reducing the leakage of fertilizer from the eccentric discharge port 2a.
[0029] In the embodiments of this utility model, please refer to Figures 1 to 5An arc-shaped undulating sleeve 34 is fixedly installed on the outer ring wall of the chassis 31. The arc-shaped undulating sleeve 34 is provided with an arc-shaped protrusion 341 and an arc-shaped concave portion 342, and the arc-shaped protrusion 341 and the arc-shaped concave portion 342 are spaced apart. A transition arc surface is provided at the connection between the arc-shaped protrusion 341 and the arc-shaped concave portion 342. A slot 341a is provided at the highest point of the arc-shaped protrusion 341. Multiple material drop pipes 33 correspond one-to-one with the provided arc-shaped protrusion 341.
[0030] A locking component 4 is installed on the storage tank 2. When any of the discharge pipes 33 rotates to be coaxial with the eccentric discharge port 2a, the locking component 4 locks the chassis 31. The locking component 4 includes a fixing ring 41, which is fixedly sleeved on the storage tank 2. The fixing ring 41 has a sliding hole 41a. A sliding rod 42 is inserted into the sliding hole 41a and is slidably connected. The bottom of the sliding rod 42 is fitted with a frame. A rolling ball 43 is installed in the frame. The ball 43 rolls in contact with the upper surface of the arc-shaped undulating sleeve 34. A fixing plate 44 is fixedly sleeved on the sliding rod 42. A pull ring 46 is fixedly installed on the top of the sliding rod 42 for easy pulling of the sliding rod 42.
[0031] It should be noted that when the rotating chassis 31 drives the arc-shaped undulating sleeve 34 to rotate synchronously, the ball 43 at the bottom of the sliding rod 42 slides along the upper surface of the arc-shaped undulating sleeve 34. Since the material discharge pipe 33 corresponds to the arc-shaped protrusion 341, when the material discharge pipe 33 on the chassis 31 rotates to be coaxial with the eccentric material discharge port 2a, the ball 43 rolls into the slot 341a opened at the highest point of the arc-shaped protrusion 341. At this time, the chassis 31 is locked, so as not to cause the eccentric material discharge port 2a and the material discharge pipe 33 to misalign, thus improving the stability of fertilizer discharge.
[0032] When replacing the feed tube 33 with a different inner diameter, pull the pull ring 46 to make the sliding rod 42 slide up along the sliding hole 41a until the ball 43 slides out of the slot 341a, then rotate the steering wheel 35. The manual operation is simple and convenient.
[0033] In this embodiment, a spring 45 is sleeved on the sliding rod 42, and one end of the spring 45 is fixedly connected to the upper surface of the fixed plate 44, and the other end of the spring 45 is fixedly connected to the lower surface of the fixed ring 41. Because of the spring 45, the ball 43 at the bottom of the sliding rod 42 is always driven to abut against the upper surface of the arc-shaped undulating sleeve 34.
[0034] This application allows for the selection of different diameter discharge pipes 33 via a rotating chassis 31, enabling rapid adjustment of fertilizer application without disassembling components, significantly improving operational efficiency. The annular abutment plate 32 cooperates with the annular groove 2b at the bottom of the storage tank 2 to seal the eccentric discharge port 2a when not in operation, reducing fertilizer leakage. The designed arc-shaped undulating sleeve 34 cooperates with the ball bearing 43 in the locking component 4 to ensure precise alignment between the discharge pipe 33 and the eccentric discharge port 2a, avoiding misalignment during fertilization. The mechanical locking and adjustment component 3 reduces manufacturing costs and improves operational stability.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A fertilizer applicator with adjustable fertilizer application rate, comprising a vehicle body, wherein a storage tank for storing fertilizer is fixedly mounted on the vehicle body, and the bottom of the storage tank has an eccentric discharge port off-center from the axis, and the bottom of the storage tank extends into a cavity opened in the vehicle body, characterized in that: The bottom of the storage tank is equipped with an adjusting component, and the adjusting component includes a chassis. The chassis is rotatably mounted on the bottom of the storage tank via a rotating shaft, and multiple annularly distributed material drop pipes with decreasing apertures are installed on the chassis. An arc-shaped undulating sleeve is fixedly installed on the outer ring wall of the chassis. The storage tank is equipped with a locking component. When any of the discharge pipes rotates to be coaxial with the eccentric discharge port, the locking component locks the chassis.
2. The fertilizer application device according to claim 1, wherein The arc-shaped undulating sleeve is provided with an arc-shaped protrusion and an arc-shaped concave part, and the arc-shaped protrusion and the arc-shaped concave part are spaced apart. A transition arc surface is provided at the connection between the arc-shaped protrusion and the arc-shaped concave part. A groove is opened at the highest point of the arc-shaped protrusion. Multiple material discharge tubes correspond one-to-one with the provided arc-shaped protrusion.
3. The fertilizer application device according to claim 2, wherein The locking component includes a fixing ring, which is fixedly sleeved on the storage tank. The fixing ring has a sliding hole, and a sliding rod is inserted into the sliding hole. The bottom of the sliding rod is fitted with a frame, and a rolling ball is installed inside the frame. The ball rolls in contact with the upper surface of the arc-shaped undulating sleeve. A fixing plate is fixedly sleeved on the sliding rod, and a spring is sleeved on the sliding rod.
4. The fertilizer application device according to claim 3, wherein One end of the spring is fixedly connected to the upper surface of the fixed plate, and the other end of the spring is fixedly connected to the lower surface of the fixed ring.
5. The fertilizer application device according to claim 3, wherein A pull ring is fixedly installed on the top of the sliding rod.
6. The fertilizer application device according to claim 1, wherein An annular abutment plate is fixedly installed on the chassis, and the annular abutment plate has a through hole that communicates with the material discharge pipe.
7. The fertilizer application device according to claim 6, wherein The bottom of the storage tank is provided with an annular groove, and the eccentric discharge port is located in the annular groove. The annular abutment plate is inserted into the annular groove and is rotatably connected to the annular groove.
8. The fertilizer application device according to claim 1, wherein A solenoid valve is installed on the material discharge pipe.
9. The fertilizer application device according to claim 1, wherein A steering wheel is fixedly mounted on the chassis.