Point type quantity-controlled fertilization device for apple trees
By designing a point-based controlled-volume fertilization device for apple trees, which uses fixed and movable blades inserted into the soil, combined with a retractable corrugated pipe and a length controller, the problem of labor-intensive and inconvenient operation in traditional fertilization is solved, and simple and efficient controlled-volume fertilization is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional spot fertilization methods are labor-intensive, and mechanical spot fertilizer applicators are inconvenient to use, limited by plot size, and difficult to operate.
A point-based controlled-volume fertilization device for apple trees was designed, including a storage box, a feeding pipe, and a fertilizer applicator. It uses a fixed blade and a movable blade inserted into the soil, and controls the inflow and outflow of fertilizer by pulling a handle. Combined with a telescopic corrugated pipe and a length controller, it achieves controlled-volume fertilization.
It achieves simple operation, saves labor time, allows for controllable fertilizer application, and is not limited by plot size, thus meeting the operational needs of fruit farmers.
Smart Images

Figure CN224111688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a point-controlled fertilization device for apple trees, specifically a device for point-based fertilization under apple trees and capable of controlling the amount of fertilizer applied. Background Technology
[0002] Currently, apple tree planting and cultivation techniques are widely used, and the balanced fertilization technique for apple trees has been perfected. It employs four combinations: basal fertilizer and topdressing; nitrogen, phosphorus, and potassium fertilizers and micronutrients; soil fertilization and foliar fertilization. Fertilization methods must be scientific. For young trees, circular trenches are dug; for fruit-bearing trees, radial trenches are dug. Trench application is generally carried out in early spring or early autumn. To ensure sufficient nutrition for fruit production, additional fertilizer is applied around June each year. Due to the dense foliage of fruit trees and the fact that fertilization is only supplementary, spot fertilization is often used. Traditional spot fertilization involves digging a small pit 50-60 cm away from the tree with a small hoe, applying fertilizer, and then filling it in. This method is relatively labor-intensive. Although mechanical spot fertilizer applicators have become more common, their use remains inconvenient due to limitations of land area and the operational skills required of apple growers. Summary of the Invention
[0003] The main technical problem solved by this utility model is: The purpose of this utility model is to provide a point-type controlled fertilization device for apple trees, which solves the problems that traditional point fertilization methods are relatively labor-intensive, mechanical point fertilizer applicators are limited by the plot of land and the operating ability requirements of apple growers, and are also inconvenient to use.
[0004] The technical solution of this utility model is as follows: This utility model apple tree point-controlled fertilization device includes a storage box, a feeding pipe, and a fertilizer applicator. The fertilizer applicator mainly consists of a handle, a pull handle, a storage chamber, a fixed blade, and a movable blade. The storage box and the fertilizer applicator are connected via a feeding pipe, which extends directly to the upper part of the storage chamber of the fertilizer applicator. The storage chamber is divided into an upper frustum-shaped cavity and a lower frustum-shaped cavity, respectively, with a retractable corrugated pipe in the middle. Corresponding upper and lower frustum-shaped bodies are provided within the upper and lower frustum-shaped cavities, and these bodies are connected by a fixed rod. Symmetrical inverted triangular wedges are provided on the inner sides of the fixed blade and the movable blade. Grooves are provided within the inverted triangular wedges, and springs and rollers are sequentially installed within these grooves. The two rollers are connected by a shaft, which is connected to the lower frustum-shaped body via a connecting rod. The upper frustum-shaped body is connected to the pull handle via a pull wire, and a return spring is provided between the handle and the pull handle.
[0005] Preferably, a length controller is provided in the middle of the fixed rod.
[0006] Instructions for use of this apple tree point-controlled fertilization device: During fertilization, the fixed and movable blades are inserted into the soil. Tighten the handle and lever, pulling the cable to pull the upper truncated cone. The upper truncated cone engages with its cavity, closing the feed. Simultaneously, the fixed rod pulls the lower truncated cone upwards, separating it from its cavity. The connecting rod of the lower truncated cone moves upwards, driving the shaft. The shaft drives the roller, compressing the spring in the inverted triangular wedge groove, causing the movable blade to open and separate from the fixed blade, allowing fertilizer to flow out of the storage chamber. At the end of fertilization, release the handle and lever. The reset spring between the handle and lever returns to its original position. Simultaneously, the spring in the inverted triangular wedge groove resets, pushing the roller and driving the shaft downwards. The movable and fixed blades engage, and the lower truncated cone engages with its cavity. The upper truncated cone separates from its cavity, closing, and fertilizer is injected into the storage chamber. The amount of fertilizer applied can be controlled by the tension-compression expandable corrugated pipe, and the length of the fixed rod can be adjusted by the length controller to adapt to changes in the tension-compression expandable corrugated pipe.
[0007] The beneficial effects are: 1. This apple tree spot-type controlled-rate fertilization device uses a fixed blade inserted into the soil; pulling the handle allows fertilizer to flow into the soil, making it simple to operate and saving labor time. 2. The amount of fertilizer applied can be controlled by pulling and pressing the retractable corrugated tube. 3. It is portable, allowing for free operation under apple trees and is not limited by the type of land. Attached Figure Description
[0008] Figure 1 Schematic diagram of a point-based controlled-volume fertilization device for apple trees.
[0009] Figure 2 : Fertilization status diagram of apple tree point-controlled fertilization device.
[0010] Figure 1 , Figure 2 In the middle, 1-handle, 2-reset spring, 3-pull handle, 4-fertilizer applicator, 5-feeding pipe, 6-storage bin, 7-pull cable, 8-upper frustum cavity, 9-upper frustum body, 10-storage cavity, 11-extendable corrugated pipe, 12-lower frustum body, 13-lower frustum cavity, 14-connecting rod, 15-inverted triangular wedge, 16-spring, 17-groove, 18-fixed blade, 19-moving blade, 20-roller, 21-shaft, 22-fixed rod, 23-length controller Detailed Implementation
[0011] The invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0012] like Figure 1 , Figure 2The apple tree point-controlled fertilization device includes a storage tank 6, a feeding pipe 5, and a fertilizer applicator 4. The fertilizer applicator 4 mainly consists of a handle 1, a pull handle 3, a storage chamber 10, a fixed blade 18, and a movable blade 19. The storage tank 6 and the fertilizer applicator 4 are connected via the feeding pipe 5, which extends directly to the upper part of the storage chamber 10 of the fertilizer applicator 4. The storage chamber 10 is divided into an upper frustum-shaped cavity 8 and a lower frustum-shaped cavity 13, with a retractable corrugated pipe 11 in the middle. The upper frustum-shaped cavity 8 and the lower frustum-shaped cavity 13 are respectively configured as an upper frustum-shaped cavity 8 and a lower frustum-shaped cavity 13. The upper truncated cone 9 and the lower truncated cone 12 are provided at corresponding positions within the 3, and are connected by a fixed rod 22. The fixed blade 18 and the movable blade 19 are provided with symmetrical inverted triangular wedges 15 on their inner sides. The inverted triangular wedges 15 are provided with grooves 17, and springs 16 and rollers 20 are installed in sequence in the grooves 17. The two rollers 20 are connected by a shaft 21, and the shaft 21 is connected to the lower truncated cone 12 by a connecting rod 14. The upper truncated cone 9 is connected to the handle 3 by a pull wire 7, and a return spring 2 is provided between the handle 1 and the handle 3.
[0013] Preferably, a length controller 23 is provided in the middle of the fixed rod 22.
Claims
1. A point-controlled fertilization device for apple trees, comprising a storage bin (6), a feeding pipe (5), and a fertilizer applicator (4), wherein the fertilizer applicator (4) is mainly composed of a handle (1), a lever (3), a storage chamber (10), a fixed blade (18), and a movable blade (19), characterized in that... The storage box (6) is connected to the fertilizer applicator (4) through a feeding pipe (5), which leads directly to the upper part of the storage chamber (10) of the fertilizer applicator (4); the storage chamber (10) is divided into an upper frustum-shaped cavity (8) and a lower frustum-shaped cavity (13) respectively, and a retractable corrugated pipe (11) is provided in the middle of the storage chamber (10); the upper frustum-shaped cavity (8) and the lower frustum-shaped cavity (13) are respectively provided with an upper frustum-shaped body (9) and a lower frustum-shaped body (12), which are connected by a fixing rod ( 22) Connected; the fixed blade (18) and the movable blade (19) are provided with symmetrical inverted triangular wedges (15) on their inner sides. The inverted triangular wedges (15) are provided with grooves (17). Springs (16) and rollers (20) are installed in the grooves (17) in sequence. The two rollers (20) are connected by a shaft (21). The shaft (21) is connected to the lower truncated cone (12) through a connecting rod (14). The upper truncated cone (9) is connected to the handle (3) through a pull wire (7). A return spring (2) is provided between the handle (1) and the handle (3).
2. The apple tree point-controlled fertilization device according to claim 1, characterized in that... The fixed rod (22) is equipped with a length controller (23) in the middle.