An insertable fertilizer application device for potato cultivation
By using the precise positioning of the turntable metering groove and the elastic locking ball, along with the gear meshing transmission, the problem of inaccurate fertilizer application in insert-type potato planting tools has been solved, achieving precise fertilization and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGHAI JUTAI AGRI & ANIMAL HUSBANDRY TECH DEV CO LTD
- Filing Date
- 2025-10-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing insert-type tuber planting tools lack a stable quantitative and positioning mechanism, leading to inaccurate fertilization and problems such as missed or excessive fertilization.
It adopts a rotary metering groove and a precise positioning structure with elastic ball and groove, combined with gear meshing transmission, to ensure the accuracy of fertilizer application. It also has anti-clogging baffles to prevent blockage and is equipped with a handle for easy operation.
It enables precise control of fertilizer application, improves nutrient utilization, reduces the risk of root damage in potatoes, and is labor-saving for single-person operation.
Smart Images

Figure CN224504023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural technology, specifically to an insertable fertilizer application device for potato planting. Background Technology
[0002] The growth of tuberous roots or tubers in potato crops requires precise nutrient supply, which needs to be directed to the root tillage layer to avoid nutrient loss and root burn.
[0003] The existing quantitative structures of insertion tools are mostly simple baffles, lacking a stable quantitative and positioning mechanism. Some tools release fertilizer by manually pressing the push rod, and the pressure and speed of pressing directly affect the amount of fertilizer applied. Although some tools are equipped with a quantitative groove, the alignment of the quantitative groove and the fertilizer outlet depends on visual judgment, which is prone to misalignment due to vibration after insertion into the soil, resulting in fertilizer leakage or over-fertilization. Utility Model Content
[0004] The purpose of this invention is to provide an insertable fertilization device for potato cultivation to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an insertable fertilization device for potato planting, including a fertilizer storage tube, and further including: a rubber stopper detachably installed on the top of the fertilizer storage tube, a hollow pointed tube fixedly connected to the bottom of the fertilizer storage tube, and a fertilizer application slot opened on the bottom side wall of the pointed tube; A quantitative fertilizer applicator is installed inside a fertilizer storage tube. The quantitative fertilizer applicator includes a turntable that is rotatably connected to the bottom of the fertilizer storage tube. The turntable is evenly provided with quantitative grooves on its circumference. The bottom wall of the fertilizer storage tube is provided with a feeding port that communicates with a pointed tube and is adapted to the quantitative grooves.
[0006] Preferably, a shaft is fixedly connected to the center of the turntable, and the turntable is rotatably mounted inside the fertilizer storage pipe via the shaft at the center of the turntable, with one end of the shaft extending to the outside of the fertilizer storage pipe.
[0007] Preferably, a rotating handle is rotatably connected to the lower part of the fertilizer storage tube, a driven gear is fixedly connected to the extended end of the shaft, and a driving gear is fixedly connected to the bottom of the rotating handle, with the driving gear meshing with the driven gear.
[0008] Preferably, one end of the rotating handle is provided with a plurality of elastic retaining beads, the elastic retaining beads being located on the side of the rotating handle near the fertilizer storage tube, and a retaining groove being provided on one side of the bottom end of the fertilizer storage tube.
[0009] Preferably, the number of slots is the same as the number of metering slots, and they are evenly distributed circumferentially. When the elastic bead is inserted into the slot, the metering slot is completely aligned with the feed port.
[0010] Preferably, an anti-clogging baffle is provided on the outer surface of the pointed tube below the fertilizer trough, and a handle is fixedly connected to the outer side wall of the fertilizer storage tube.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the precise positioning of the rotary quantitative groove and the elastic locking beads and groove ensures small deviation in fertilizer application, adapts to the different fertilizer requirements of potatoes at different growth stages, and improves nutrient utilization; gear meshing transmission avoids slippage failure; the insertion fertilization eliminates the need for trenching, reducing damage to shallow roots and tubers of potatoes; and the combination of handle and convenient rotating handle makes it easy for a single person to operate. Attached Figure Description
[0012] Figure 1 A schematic diagram of a preferred embodiment of this utility model; Figure 2 A cross-sectional view of the fertilizer storage pipe provided by this utility model; Figure 3 A partial structural diagram of the elastic retaining bead and retaining groove provided by this utility model; Figure 4 This is a partial cross-sectional view of the fertilizer storage pipe provided by this utility model.
[0013] In the diagram: 1. Fertilizer storage pipe; 2. Pointed pipe; 201. Fertilizer inlet; 202. Anti-clogging baffle; 3. Rubber stopper; 4. Quantitative fertilizer application component; 401. Quantitative trough; 402. Feed inlet; 403. Drive gear; 404. Driven gear; 405. Shaft; 406. Elastic retaining ball; 407. Recess; 408. Turntable; 5. Handle; 6. Rotary handle. Detailed Implementation
[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figures 1-4 As shown, an insertable fertilization device for potato planting includes a fertilizer storage tube 1, and further includes a rubber stopper 3 that is detachably installed on the top of the fertilizer storage tube 1. A hollow pointed tube 2 is fixedly connected to the bottom of the fertilizer storage tube 1, and a fertilizer inlet 201 is opened on the bottom side wall of the pointed tube 2. The quantitative fertilizer application component 4 is installed inside the fertilizer storage tube 1. The quantitative fertilizer application component 4 includes a turntable 408 rotatably connected to the bottom of the inside of the fertilizer storage tube 1. The turntable 408 is evenly provided with quantitative grooves 401 in the circumference. The bottom wall of the fertilizer storage tube 1 is provided with a feeding port 402 that communicates with the pointed tube 2 and is adapted to the quantitative grooves 401.
[0016] Based on the above embodiments, the fertilizer storage tube 1 is made of high-strength plastic material and is hollow cylindrical in shape, used for storing granular fertilizer specifically for potatoes. A rubber stopper 3 is detachably installed at the top of the fertilizer storage tube 1 via threads. The rubber stopper 3 is made of nitrile rubber and has a diameter slightly larger than the outer diameter of the fertilizer storage tube 1. Tightening it seals the top of the fertilizer storage tube 1, preventing fertilizer from getting damp or leaking. A hollow pointed tube 2 is fixedly connected to the bottom of the fertilizer storage tube 1 by hot-melt welding. The pointed tube 2 is made of stainless steel and has a conical shape with a 30-degree cone angle at the bottom, facilitating insertion into the loose soil for potato cultivation. Two symmetrical fertilizer inlets 201 are opened on the bottom side wall of the pointed tube 2 for discharging fertilizer into the soil tillage layer. The fertilizer storage tube 1 is equipped with a quantitative fertilizer application component 4, which includes a turntable 408 rotatably connected to the bottom of the fertilizer storage tube 1. The turntable 408 is made of plastic and rotates by engaging an annular boss at its bottom with an annular groove on the inner wall of the fertilizer storage tube 1. The turntable 408 has four quantitative grooves 401 evenly distributed around its circumference; the bottom wall of the fertilizer storage pipe 1 has a feed port 402 at the corresponding position. The diameter of the feed port 402 is adapted to the width of the quantitative groove 401 and is connected to the inside of the pointed pipe 2 so that the fertilizer in the quantitative groove 401 can fall into the pointed pipe 2.
[0017] A shaft 405 is fixedly connected to the center of the turntable 408. The turntable 408 is rotatably installed inside the fertilizer storage tube 1 via the shaft 405 at the center of the turntable. One end of the shaft 405 extends to the outside of the fertilizer storage tube 1.
[0018] A shaft 405, made of stainless steel, is integrally molded and fixedly connected to the axis of the turntable 408. Its length is adapted to the height of the fertilizer storage tube 1. The turntable 408 is rotatably mounted inside the fertilizer storage tube 1 via this shaft 405. The extended end of the shaft 405, away from the turntable 408, is used to connect external drive components (drive gear 403 and driven gear 404). Rotation of the shaft 405 can drive the turntable 408 to rotate synchronously, achieving the switching and alignment of the metering trough 401 and the feed port 402.
[0019] A handle 6 is rotatably connected to the bottom of the fertilizer storage pipe 1. A driven gear 404 is fixedly connected to the extended end of the shaft 405. A driving gear 403 is fixedly connected to the bottom of the handle 6. The driving gear 403 meshes with the driven gear 404.
[0020] A handle 6 is rotatably connected to the bottom of the fertilizer storage tube 1 via a shaft pin. The handle 6 is made of plastic and is easy to rotate by hand. The extended end of the shaft 405 is fixedly connected to a driven gear 404 via a flat key. The driven gear 404 is made of steel, with a module of 2 mm and 40 teeth. The end of the handle 6 near the shaft pin is fixedly connected to a driving gear 403 via welding. The driving gear 403 is also made of steel, with a module of 2 mm and 20 teeth. The driving gear 403 meshes with the driven gear 404, and the meshing clearance is controlled between 0.1 and 0.2 mm. When the handle 6 is rotated, the driving gear 403 drives the driven gear 404 to rotate, which in turn drives the turntable 408 to rotate via the shaft 405, thus achieving stable power transmission.
[0021] One end of the handle 6 is provided with multiple elastic retaining beads 406. The elastic retaining beads 406 are located on the side of the handle 6 near the fertilizer storage tube 1. A retaining groove 407 is provided on one side of the bottom end of the fertilizer storage tube 1.
[0022] Four elastic retaining beads 406 are provided at the horizontal end of the handle 6 away from the handheld end. The elastic retaining beads 406 are made of nylon and pop out of the surface of the handle 6 under normal conditions. All the elastic retaining beads 406 are located on the side of the handle 6 near the fertilizer storage tube 1. A groove 407 is provided on one side of the bottom end of the fertilizer storage tube 1 (corresponding to the rotation trajectory of the elastic retaining beads 406). The groove 407 is a hemispherical groove. When the handle 6 rotates, the elastic retaining beads 406 can move synchronously with the handle 6 and cooperate with the groove 407 to form rotational positioning feedback.
[0023] The number of slots 407 is the same as the number of metering slots 401, and they are evenly distributed circumferentially. When the elastic locking beads 406 are inserted into the slots 407, the metering slots 401 and the feed inlet 402 are completely aligned.
[0024] The number of slots 407 is the same as the number of metering slots 401, both being four, and they are evenly distributed along the circumference of the bottom side wall of the fertilizer storage tube 1. When the handle 6 is rotated until the elastic ball 406 is engaged in any slot 407, under the synergistic effect of gear transmission and structural positioning, one of the metering slots 401 on the turntable 408 is exactly aligned with the feed port 402 on the bottom wall of the fertilizer storage tube 1. At this time, the fertilizer in the metering slot 401 can fall smoothly into the pointed tube 2 through the feed port 402, realizing precise positioning of metered fertilization.
[0025] An anti-blocking baffle 202 is provided on the outer surface of the pointed pipe 2 below the fertilizer trough 201, and a handle 5 is fixedly connected to the outer side wall of the fertilizer storage pipe 1.
[0026] The outer surface of the pointed tube 2 below the fertilizer trough 201 is welded with anti-clogging baffles 202. The anti-clogging baffles 202 are thin stainless steel sheets, two in total, distributed along both sides of the pointed tube 2, forming a 45-degree angle with the axis of the pointed tube 2. When the pointed tube 2 is inserted into the soil, the anti-clogging baffles 202 can pry open the surrounding soil to prevent the fertilizer trough 201 from being blocked. The outer side wall of the fertilizer storage tube 1 is fixedly connected with a handle 5 by screws. The handle 5 is made of stainless steel, U-shaped, and covered with a rubber anti-slip sleeve, making it easy for the operator to grip and apply downward force to insert the pointed tube 2 into the soil to the specified depth.
[0027] Working principle: Open the removable rubber stopper 3 at the top of the fertilizer storage tube 1, fill it with potato-specific fertilizer, and then tighten the seal; the hollow pointed tube 2 at the bottom of the fertilizer storage tube 1 prepares for subsequent soil insertion, and the fertilizer slot 201 on its bottom side wall is used for fertilizer discharge; the turntable 408 is rotatably mounted inside the fertilizer storage tube 1 via a shaft 405 fixed at the shaft center, and the extended end of the shaft 405 provides a connection point for externally driving the turntable 408; rotating the handle 6 below the fertilizer storage tube 1 causes the driving gear 403 at the bottom of the handle 6 to drive the driven gear 404 at the extended end of the shaft 405 to rotate, which in turn drives the turntable 408 to rotate synchronously via the shaft 405; the side of the handle 6 closest to the fertilizer storage tube 1... The elastic locking bead 406, when rotated with the handle 6, can engage with the locking groove 407 at the bottom of the fertilizer storage tube 1 to form positioning feedback for the rotation of the handle 6. Since the number of locking grooves 407 and the quantitative grooves 401 are the same and circumferentially distributed, when the elastic locking bead 406 is engaged in the locking groove 407, the quantitative groove 401 of the turntable 408 is exactly aligned with the feeding port 402 on the bottom wall of the fertilizer storage tube 1, ensuring quantitative fertilizer discharge. By applying force with the handle 5 on the outside of the fertilizer storage tube 1, the pointed tube 2 is inserted into the soil. The anti-blocking baffle 202 on the outer surface of the pointed tube 2 and below the fertilizer trough opening 201 clears away the soil to prevent the trough opening from being blocked. The fertilizer is discharged from the fertilizer trough opening 201 through the feeding port 402 and the pointed tube 2.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fertilizer injection device for potato planting, comprising a fertilizer storage tube (1), characterized in that, Also includes: A rubber plug (3) is detachably installed on the top of the fertilizer storage pipe (1). A hollow pointed pipe (2) is fixedly connected to the bottom of the fertilizer storage pipe (1). A fertilizer application slot (201) is opened on the bottom side wall of the pointed pipe (2). A quantitative fertilizer application component (4) is installed inside the fertilizer storage tube (1). The quantitative fertilizer application component (4) includes a turntable (408) rotatably connected to the bottom of the inside of the fertilizer storage tube (1). The turntable (408) is evenly provided with quantitative grooves (401) in the circumference. The bottom wall of the fertilizer storage tube (1) is provided with a feeding port (402) that communicates with the pointed tube (2) and is adapted to the quantitative grooves (401).
2. The plug-in potato planting fertilizing apparatus according to claim 1, characterized in that: A shaft (405) is fixedly connected to the center of the turntable (408). The turntable (408) is rotatably installed inside the fertilizer storage pipe (1) via the shaft (405) at the center of the turntable. One end of the shaft (405) extends to the outside of the fertilizer storage pipe (1).
3. The plug-in potato planting fertilizing apparatus according to claim 2, characterized in that: A handle (6) is rotatably connected to the lower part of the fertilizer storage tube (1), a driven gear (404) is fixedly connected to the extended end of the shaft (405), and a driving gear (403) is fixedly connected to the bottom of the handle (6). The driving gear (403) meshes with the driven gear (404).
4. The plug potato planting and fertilizing apparatus according to claim 3, wherein: One end of the rotating handle (6) is provided with a plurality of elastic retaining beads (406), the elastic retaining beads (406) are located on the side of the rotating handle (6) near the fertilizer storage tube (1), and a retaining groove (407) is provided on one side of the bottom end of the fertilizer storage tube (1).
5. The device according to claim 4, characterized in that: The number of slots (407) is the same as the number of metering slots (401), and they are evenly distributed in the circumference. When the elastic bead (406) is inserted into the slot (407), the metering slot (401) is completely aligned with the feed port (402).
6. The insertion type fertilizing apparatus for potato according to claim 1, wherein: The pointed tube (2) below the fertilizer trough (201) is provided with an anti-blocking baffle (202) on its outer surface, and a handle (5) is fixedly connected to the outer side wall of the fertilizer storage tube (1).