Portable handheld seedling precision drip fertilizer applicator

Abstract

This application relates to a portable handheld precision drip fertilizer applicator for seedlings, belonging to the technical field of garden plant maintenance equipment. It includes a storage tank, with a metering pump fixedly installed at the bottom of the tank via a pipe. The output end of the metering pump is fixedly connected to a corrugated pipe via a pipe. In use, the operator rotates a threaded pedal connected to a threaded cylinder, causing the pedal to raise and lower the connecting frame and the limiting ring. The limiting ring is adjusted to the desired height according to the fertilization depth. Then, the operator steps on the threaded pedal, causing the conical fertilizer head, connecting frame, and limiting ring to descend, inserting the conical fertilizer head into the soil. The limiting ring, in contact with the ground, prevents the conical fertilizer head from descending further. The fertilizer solution is then drawn by the metering pump, transported through various pipes, and finally discharged through the fertilizer inlet. By adjusting the insertion depth of the conical fertilizer head, the fertilization depth can be controlled, thus avoiding seedling burn or fertilizer waste.

Description

Technical Field

[0001] This invention relates to the field of garden plant maintenance equipment, and in particular to a portable handheld precision drip fertilizer applicator for seedlings. Background Technology

[0002] Landscape seedlings refer to various seedlings and herbaceous plants that are in the early stages of growth and are used for planting in landscape greening projects. These include young landscape shrubs, street trees, ornamental flowers, and ground cover plants. They are mainly used for urban greening, landscaping, and planting in residential areas and along roads. In the cultivation of landscape seedlings, fertilization is mainly done manually, usually by spreading or watering, or by using ordinary fertilizer applicators.

[0003] Common fertilizer applicators on the market require operators to insert the fertilizer head into the ground and then deliver liquid or granular fertilizer to the roots of the seedlings by opening and closing the valve. During the fertilization process, it has been found that because the insertion depth of the fertilizer head depends entirely on the operator's experience or the amount of pressure applied, it is difficult to control the fertilization depth. When the fertilizer is applied too shallowly, it can easily burn the seedlings; when it is applied too deeply, the seedling roots cannot absorb it, resulting in fertilizer waste. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this application is to provide a portable, handheld precision drip fertilizer applicator for seedlings to address the problems mentioned in the background art.

[0006] The portable handheld seedling precision drip fertilizer applicator provided in this application adopts the following technical solution: it includes a storage tank, a metering pump is fixedly installed at the bottom of the storage tank through a pipe, the output end of the metering pump is fixedly connected to a corrugated pipe through a pipe, the bottom end of the corrugated pipe is fixedly connected to a fertilizer tube, the bottom end of the fertilizer tube is fixedly connected to a conical fertilizer head, the outer surface of the conical fertilizer head has fertilizer holes arranged at equal angles, the outer surface of the fertilizer tube is fixedly connected to a threaded cylinder, the outer surface of the threaded cylinder is threadedly connected to a threaded pedal, the bottom surface of the threaded pedal is fixedly connected to a connecting frame, the bottom surface of the connecting frame is fixedly connected to a limit ring, the upper surface of the storage tank is threadedly connected to a cover, and the upper surface of the cover has a vent hole;

[0007] By adopting the above technical solution, a storage tank is connected to a metering pump via a pipeline, allowing the pump to draw the liquid medicine from the storage tank during operation. A corrugated pipe is installed at the output end of the metering pump, enabling the liquid medicine drawn by the pump to be transported through the corrugated pipe. A fertilizer application pipe is installed at the bottom of the corrugated pipe, allowing the liquid medicine in the corrugated pipe to be transported to the fertilizer application pipe. Furthermore, the corrugated pipe allows the fertilizer application pipe to move within its range of motion. A conical fertilizer head is connected to the fertilizer application pipe, and fertilizer application holes arranged at equal angles are opened on the outer surface of the conical fertilizer head. When the operator presses the conical fertilizer head, it can be inserted into the ground, at which point the fertilizer application holes are in the fertilization position. The liquid medicine is transported through the fertilizer pipe to the conical fertilizer head and then discharged through the fertilizer application holes, thus completing the fertilization. A threaded cylinder is installed on the outer surface of the fertilizer application pipe, and a threaded pedal is installed on the outer surface of the threaded cylinder. The threaded pedal connection allows the pedal to move up and down along the threaded cylinder when the operator rotates it. A connecting frame is installed on the bottom of the threaded pedal, and a limiting ring is set on the bottom of the connecting frame. When the operator steps on the threaded pedal, it drives the conical fertilizer head, connecting frame, and limiting ring to descend, allowing the conical fertilizer head to insert into the soil. When the limiting ring contacts the ground, it stops the conical fertilizer head from descending further. By rotating the threaded pedal and connecting it to the threaded cylinder, the height of the limiting ring can be adjusted, thereby adjusting the insertion depth of the conical fertilizer head to avoid burning seedlings or wasting fertilizer. A cover is installed on the upper surface of the storage tank. The operator can open the opening of the storage tank by rotating the cover and then add the solution. A vent is opened on the upper surface of the cover to facilitate air communication between the inside and outside of the storage tank, ensuring that the internal and external pressures are consistent when the metering pump draws the solution from the storage tank.

[0008] Preferably, a guide cylinder is fixedly connected to the outer surface of the fertilizer pipe, two guide discs are fixedly connected to the outer surface of the guide cylinder, and guide rods arranged at equal angles are fixedly connected between the two guide discs;

[0009] By adopting the above technical solution, the guide cylinder is installed on the outer surface of the fertilizer pipe, and two guide discs are installed on the outer surface of the guide cylinder. When the fertilizer pipe moves, it can drive the guide cylinder and the guide discs to move synchronously. A guide rod with an equal angle is set between the two guide discs, and the two ends of the guide rod are fixed to the corresponding guide discs respectively. Therefore, the guide rod can move with the guide discs.

[0010] Preferably, the outer surface of the guide cylinder is slidably connected to the limiting cylinder, the outer surfaces of the two guide discs are slidably connected to the inner wall of the limiting cylinder, and the outer surface of each guide rod is slidably connected to the inner wall of the limiting cylinder.

[0011] By adopting the above technical solution, a limiting cylinder is set on the outer surface of the guide cylinder, and the guide disc and guide rod are set to slide connection with the limiting cylinder. Therefore, the guide cylinder, guide disc and guide rod can rise and fall stably along the limiting cylinder, thereby ensuring the stability of the conical fertilizer head during the rising and falling process.

[0012] Preferably, a set of return springs arranged at equal angles is fixedly connected to the bottom surface of one of the guide discs, and the bottom end of each set of return springs is fixedly connected to the inner bottom wall of the limiting cylinder.

[0013] By adopting the above technical solution, the return spring is connected to the bottom surface of the upper guide plate, and the bottom surface of the return spring is connected to the inner bottom wall of the limiting cylinder. When the operator steps on the threaded pedal, the descent of the fertilizer pipe and the conical fertilizer head can drive the guide cylinder, guide plate, and guide rod to descend along the limiting cylinder. At this time, the return spring is compressed. After fertilization, the operator releases the step on the threaded pedal, and under the action of the return spring, the guide plate can quickly return to its original position, thereby enabling the conical fertilizer head to quickly return to its original position. This makes the fertilization process easy and fast, improving fertilization efficiency.

[0014] Preferably, a support frame is fixedly connected to the upper surface of the limiting cylinder, and the upper surface of the support frame is fixedly connected to the bottom surface of the liquid storage tank.

[0015] By adopting the above technical solution, the support frame is installed on the outer surface of the limiting cylinder, and the upper surface of the support frame is connected to the bottom surface of the liquid storage tank, so that the support frame can support the liquid storage tank.

[0016] Preferably, a mounting base is fixedly connected to the outer surface of the limiting cylinder, and a channel steel frame is fixedly installed on the upper surface of the mounting base. The upper surface of the channel steel frame is fixedly installed with the bottom surface of the metering pump.

[0017] By adopting the above technical solution, the mounting base is installed on the outer surface of the limiting cylinder, and the channel steel frame is installed on the upper surface of the mounting base by bolts. The metering pump is then installed on the upper surface of the channel steel frame by bolts, so that the mounting base and the channel steel frame can support the metering pump and ensure that the metering pump can operate stably.

[0018] Preferably, a support plate is fixedly connected to the inner wall of the channel steel frame, and a battery module is fixedly installed on the upper surface of the support plate. The battery module is electrically connected to the metering pump.

[0019] By adopting the above technical solution, a support plate is installed on the inner wall of the channel steel frame, and a battery module is set on the upper surface of the support plate. The support plate not only improves the overall stability of the channel steel frame, but also supports the battery module. The battery module is connected to the metering pump, so that the battery module can provide the power foundation for the operation of the metering pump.

[0020] Preferably, a fixing frame is fixedly connected to the outer surface of the mounting base, and a grounding base plate is fixedly installed on the right side of the fixing frame;

[0021] By adopting the above technical solution, the fixing frame is installed on the outer surface of the mounting base, and a grounding base plate is set on the right side of the fixing frame. The bottom of the grounding base plate is in contact with the ground and is flush with the tip of the conical fertilizer head. When using the equipment, the grounding base plate is first pressed on the ground to enable the equipment to complete the initial positioning. Then the operator can step on the threaded pedal to perform the fertilization action. The grounding base plate provides a supporting foundation for the operation of the equipment.

[0022] Preferably, a hand handle is fixedly connected to the right side of the fixing frame, a retainer is fixedly installed on the outer surface of the hand handle, and the inner wall of the retainer is fixedly installed on the outer surface of the liquid storage tank.

[0023] By adopting the above technical solution, the handheld rod is installed on the right side of the fixed frame, and a retainer is set on the outer surface of the handheld rod. Through the connection between the retainer and the handheld rod and the liquid storage tank, the stability of the handheld rod and the liquid storage tank during use can be further improved.

[0024] Preferably, an operating handle is fixedly installed at the top of the hand lever, and an operating panel is fixedly installed on the upper surface of the operating handle. The operating panel is electrically connected to the metering pump and the battery module.

[0025] By adopting the above technical solution, the operating handle is installed at the top of the hand lever, and an operating panel is set on the upper surface of the operating handle. The operating panel has start / stop buttons, increase and decrease buttons. Through the connection between the operating panel and the battery module, the battery module can provide power for the operation of the operating panel. Through the connection between the operating panel and the metering pump, the operator can control the output and start / stop of the metering pump by pressing the operating buttons on the operating panel.

[0026] Beneficial effects

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] This invention provides a portable, handheld precision drip fertilizer applicator for seedlings. It comprises a fertilizer tube, a threaded cylinder, a threaded pedal, and a limiting ring. In use, the operator rotates the threaded pedal, which connects to the threaded cylinder, causing the connecting frame and limiting ring to rise and fall. The limiting ring is adjusted to the desired height according to the desired fertilization depth. Then, the operator steps on the threaded pedal, causing the conical fertilizer head, connecting frame, and limiting ring to descend, inserting the conical fertilizer head into the soil. The limiting ring, in contact with the ground, prevents the conical fertilizer head from descending further. The fertilizer solution is then drawn by a metering pump, transported through various pipelines, and finally discharged through the fertilizer inlet. By adjusting the insertion depth of the conical fertilizer head, the fertilization depth can be controlled, thus avoiding seedling burn or fertilizer waste.

[0029] This invention provides a portable handheld precision drip fertilizer applicator for seedlings. By incorporating components such as a guide plate, guide rod, limiting cylinder, and return spring, the operator descends the conical fertilizer head to the designated fertilization depth by pressing a threaded pedal. During this process, the descent of the fertilizer tube causes the guide cylinder on its surface to descend as well. The guide cylinder, connected to the guide plate and guide rod, allows the guide plate and guide rod to descend stably along the limiting cylinder. At this time, the return spring contracts under the pressure of the upper guide plate. After fertilization, the operator releases the threaded pedal, causing the return spring to rebound and quickly reset the guide plate, thus enabling the conical fertilizer head to return to its original position. This rapid reset mechanism simplifies the cumbersome operation of the entire fertilization process, thereby improving fertilization efficiency.

[0030] This invention provides a portable handheld precision drip fertilizer applicator for seedlings. It comprises a metering pump, a battery module, an operating handle, and an operating panel. Before use, the operator can adjust the output of the metering pump using the buttons on the operating panel to the desired value. During fertilization, after the conical fertilizer head is inserted into the ground, the operator can manually press the operating button on the operating panel to activate the metering pump. The pump then precisely draws the fertilizer solution from the storage tank and delivers it through the corrugated pipe and fertilizer tube. The battery module serves as the power source for both the metering pump and the operating panel, ensuring stable operation. The combination of the metering pump and the operating panel achieves precise fertilization, ensuring consistent fertilization for each seedling and preventing uneven growth during seedling development. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the entire invention;

[0032] Figure 2 This is a schematic diagram of the overall front view of the present invention;

[0033] Figure 3This is a schematic diagram of the connection structure between the metering pump and the bellows of the present invention;

[0034] Figure 4 This is a schematic diagram of the connection structure between the guide disc and the guide rod of the present invention;

[0035] Figure 5 This is a schematic diagram of the connection relationship between the limiting cylinder and the reset spring of the present invention;

[0036] Figure 6 This is a schematic diagram of the connection structure between the support plate and the battery module of the present invention;

[0037] Figure 7 This is a schematic diagram of the connection structure between the handheld lever and the operating handle of the present invention.

[0038] The components include: 1. Storage tank; 2. Metering pump; 3. Corrugated pipe; 4. Fertilizer pipe; 5. Conical fertilizer head; 6. Fertilizer hole; 7. Threaded cylinder; 8. Threaded pedal; 9. Connecting frame; 10. Limiting ring; 11. Cover; 12. Vent hole; 13. Guide cylinder; 14. Guide plate; 15. Guide rod; 16. Limiting cylinder; 17. Return spring; 18. Support frame; 19. Mounting base; 20. Channel steel frame; 21. Support plate; 22. Battery module; 23. Fixing frame; 24. Hand handle; 25. Retaining frame; 26. Operating handle; 27. Operating panel; 28. Grounded base plate. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0040] Example 1: Portable handheld precision drip fertilizer applicator for seedlings, refer to Figure 2 , Figure 4 and Figure 5The system includes a storage tank 1, a metering pump 2 fixedly installed at the bottom of the storage tank 1 via a pipe, and a corrugated pipe 3 fixedly connected to the output end of the metering pump 2 via a pipe. The storage tank 1 and the metering pump 2 are connected via a pipe, allowing the metering pump 2 to draw the liquid medicine from the storage tank 1 during operation. The corrugated pipe 3, installed at the output end of the metering pump 2, allows the liquid medicine drawn by the metering pump 2 to be transported through the corrugated pipe 3. A fertilizer application pipe 4 is fixedly connected to the bottom end of the corrugated pipe 3. The connection between the corrugated pipe 3 and the fertilizer application pipe 4 allows the liquid medicine in the corrugated pipe 3 to be transported to the fertilizer application pipe. In the fertilizer pipe 4, and due to the setting of the corrugated pipe 3, the fertilizer pipe 4 is allowed to move within the range of movement. The bottom end of the fertilizer pipe 4 is fixedly connected to a conical fertilizer head 5. The outer surface of the conical fertilizer head 5 is provided with fertilizer holes 6 arranged at equal angles. The conical fertilizer head 5 is connected to the fertilizer pipe 4, and fertilizer holes 6 arranged at equal angles are opened on the outer surface of the conical fertilizer head 5. When the operator presses the conical fertilizer head 5, the conical fertilizer head 5 can be inserted into the ground. At this time, the fertilizer hole 6 is located in the fertilization position. After the liquid medicine is transported through the fertilizer pipe 4 to the conical fertilizer head 5, it is discharged through the fertilizer hole 6, thereby completing the fertilization.

[0041] Reference Figure 2 , Figure 3 and Figure 4 A threaded cylinder 7 is fixedly connected to the outer surface of the fertilizer pipe 4. A threaded pedal 8 is threadedly connected to the outer surface of the threaded cylinder 7. A connecting frame 9 is fixedly connected to the bottom surface of the threaded pedal 8. A limit ring 10 is fixedly connected to the bottom surface of the connecting frame 9. The threaded cylinder 7 is installed on the outer surface of the fertilizer pipe 4, and the threaded pedal 8 is set on the outer surface of the threaded cylinder 7. Through the connection between the threaded cylinder 7 and the threaded pedal 8, the threaded pedal 8 can rise and fall along the threaded cylinder 7 when the operator rotates it. The connecting frame 9 is installed on the bottom surface of the threaded pedal 8, and a limit ring 10 is set on the bottom surface of the connecting frame 9. When the operator steps on the threaded pedal 8, it can drive the conical fertilizer head 5, the connecting frame 9 and the limit ring 10 to descend, and cause the conical fertilizer head 5 to insert into the soil. When the limit ring 10 is reached, the conical fertilizer head 5 will descend. When the retaining ring 10 contacts the ground, it prevents the conical fertilizer head 5 from descending further. By rotating the threaded pedal 8 and connecting it to the threaded cylinder 7, the height of the retaining ring 10 can be adjusted, thereby adjusting the insertion depth of the conical fertilizer head 5 to avoid burning seedlings or wasting fertilizer. The upper surface of the storage tank 1 is threaded with a cover 11, and the upper surface of the cover 11 is provided with a vent hole 12. With the cover 11 on the upper surface of the storage tank 1, the operator can open the opening of the storage tank 1 by rotating the cover 11 and then add the medicine to the storage tank 1. The vent hole 12 on the upper surface of the cover 11 facilitates the communication between the inside of the storage tank 1 and the outside air, ensuring that the internal and external pressures are consistent when the metering pump 2 draws the medicine from the storage tank 1.

[0042] Example 2: Portable handheld precision drip fertilizer applicator for seedlings, refer to Figure 1 , Figure 4 and Figure 5 A guide cylinder 13 is fixedly connected to the outer surface of the fertilizer pipe 4. Two guide discs 14 are fixedly connected to the outer surface of the guide cylinder 13. Guide rods 15 arranged at equal angles are fixedly connected between the two guide discs 14. The guide cylinder 13 is installed on the outer surface of the fertilizer pipe 4, and the two guide discs 14 are installed on the outer surface of the guide cylinder 13. When the fertilizer pipe 4 moves, it can drive the guide cylinder 13 and the guide discs 14 to move synchronously. Guide rods 15 at equal angles are set between the two guide discs 14, and the two ends of the guide rods 15 are fixed to the corresponding guide discs 14 respectively. Therefore, the guide... The rod 15 can move along the guide plate 14. The outer surface of the guide cylinder 13 is slidably connected to the limiting cylinder 16. The outer surfaces of both guide plates 14 are slidably connected to the inner wall of the limiting cylinder 16. The outer surface of each guide rod 15 is slidably connected to the inner wall of the limiting cylinder 16. The limiting cylinder 16 is set on the outer surface of the guide cylinder 13, and the guide plates 14 and guide rods 15 are slidably connected to the limiting cylinder 16. Therefore, the guide cylinder 13, guide plates 14 and guide rods 15 can rise and fall stably along the limiting cylinder 16, thereby ensuring the stability of the conical fertilizer head 5 during the rising and falling process.

[0043] Reference Figure 2 , Figure 3 and Figure 6 A support frame 18 is fixedly connected to the upper surface of the limiting cylinder 16. The upper surface of the support frame 18 is fixedly connected to the bottom surface of the liquid storage tank 1. The support frame 18 is installed on the outer surface of the limiting cylinder 16 and connected to the bottom surface of the liquid storage tank 1, so that the support frame 18 can support the liquid storage tank 1. A mounting base 19 is fixedly connected to the outer surface of the limiting cylinder 16. A channel steel frame 20 is fixedly installed on the upper surface of the mounting base 19. The upper surface of the channel steel frame 20 is fixedly installed to the bottom surface of the metering pump 2. The mounting base 19 is installed on the outer surface of the limiting cylinder 16, and the channel steel frame 20 is installed on the upper surface of the mounting base 19 by bolts. The metering pump 2 is installed on the upper surface of the channel steel frame 20 by bolts, so that the mounting base 19 and the channel steel frame 20 can support the metering pump 2 and ensure that the metering pump 2 can operate stably.

[0044] Reference Figure 3 , Figure 4 and Figure 5One of the guide discs 14 has a fixed connection to the bottom surface of a set of return springs 17 arranged at equal angles. The bottom end of each return spring 17 is fixedly connected to the inner bottom wall of the limiting cylinder 16. The return spring 17 is connected to the bottom surface of the upper guide disc 14 and the bottom surface of the return spring 17 is connected to the inner bottom wall of the limiting cylinder 16. When the operator steps on the threaded pedal 8, the descent of the fertilizer pipe 4 and the conical fertilizer head 5 can drive the guide cylinder 13, the guide disc 14 and the guide rod 15 to descend along the limiting cylinder 16. At this time, the return spring 17 is compressed. After fertilization, the operator releases the pressure on the threaded pedal 8. Under the action of the return spring 17, the guide disc 14 can quickly return to its original position, thereby allowing the conical fertilizer head 5 to quickly return to its original position, making the fertilization process easy and fast and improving fertilization efficiency.

[0045] Reference Figure 3 , Figure 4 and Figure 6 A support plate 21 is fixedly connected to the inner wall of the channel steel frame 20. A battery module 22 is fixedly installed on the upper surface of the support plate 21. The battery module 22 is electrically connected to the metering pump 2. The support plate 21 is installed on the inner wall of the channel steel frame 20, and the battery module 22 is set on the upper surface of the support plate 21. The setting of the support plate 21 can not only improve the overall stability of the channel steel frame 20, but also support the battery module 22. The battery module 22 is connected to the metering pump 2, so that the battery module 22 can provide the power foundation for the operation of the metering pump 2.

[0046] Reference Figure 1 , Figure 2 and Figure 7 A mounting bracket 23 is fixedly connected to the outer surface of the mounting base 19. A grounding base plate 28 is fixedly installed on the right side of the mounting bracket 23. The mounting bracket 23 is installed on the outer surface of the mounting base 19, and the grounding base plate 28 is set on the right side of the mounting bracket 23. The bottom end of the grounding base plate 28 contacts the ground and is flush with the pointed tip of the conical fertilizer head 5. When using the equipment, first press the grounding base plate 28 onto the ground to allow the equipment to complete the initial positioning. Then, the operator can step on the threaded pedal 8 to perform the fertilization action. The grounding base plate 28 provides a supporting foundation for the operation of the equipment. A handheld rod 24 is fixedly connected to the right side of the fixed frame 23. A retainer 25 is fixedly installed on the outer surface of the handheld rod 24. The inner wall of the retainer 25 is fixedly installed on the outer surface of the liquid storage tank 1. By installing the handheld rod 24 on the right side of the fixed frame 23 and setting the retainer 25 on the outer surface of the handheld rod 24, the stability of the handheld rod 24 and the liquid storage tank 1 can be further improved through the connection between the retainer 25 and the handheld rod 24 and the liquid storage tank 1 during use.

[0047] Reference Figure 3 , Figure 6 and Figure 7An operating handle 26 is fixedly installed at the top of the hand lever 24. An operating panel 27 is fixedly installed on the upper surface of the operating handle 26. The operating panel 27 is electrically connected to the metering pump 2 and the battery module 22. The operating handle 26 is installed at the top of the hand lever 24, and the operating panel 27 is set on the upper surface of the operating handle 26. The operating panel 27 has start / stop buttons, increase and decrease buttons. Through the connection between the operating panel 27 and the battery module 22, the battery module 22 can provide power for the operation of the operating panel 27. Through the connection between the operating panel 27 and the metering pump 2, the operator can control the output and start / stop of the metering pump 2 by pressing the operating buttons on the operating panel 27.

[0048] The implementation principle of this application embodiment is as follows: Before use, the operator first rotates the threaded pedal 8 to connect with the threaded cylinder 7, so that the threaded pedal 8 can drive the connecting frame 9 and the limiting ring 10 to rise and fall. The limiting ring 10 is adjusted to the required height according to the fertilization depth. Then, the operator adjusts the output of the metering pump 2 through the operation buttons on the operation panel 27 to the required value. When using, the operator first moves the equipment to the vicinity of the seedlings that need fertilization, and contacts the grounded base plate 28 with the ground. At this time, the conical fertilizer head 5... Located in the fertilization area, the operator steps on the threaded pedal 8, which lowers the conical fertilizer head 5, connecting frame 9, and limiting ring 10 via the fertilizer pipe 4, causing the conical fertilizer head 5 to insert into the soil. The limiting ring 10, in contact with the ground, prevents the conical fertilizer head 5 from descending further, ensuring it remains at the desired fertilization depth. The operator then issues a control command to the metering pump 2 via the control panel 27. At this time, the metering pump 2 meterly draws the fertilizer solution from the storage tank 1 and delivers it through the corrugated pipe 3 and fertilizer pipe 4. The fertilizer solution enters the conical fertilizer head... After the fertilizer head 5 is inserted, it is discharged through the fertilizer hole 6, completing the fertilization process. During this process, the insertion depth of the conical fertilizer head 5 can be adjusted to control the fertilization depth, thereby avoiding seedling burn or fertilizer waste. Through the cooperation of the metering pump 2 and the operation panel 27, the effect of metered fertilization can be achieved, thus ensuring that the amount of fertilizer for each seedling is consistent and avoiding uneven growth during the seedling process. During the fertilization process, when the threaded pedal 8 drives the conical fertilizer head 5 to descend and insert into the soil, the fertilizer tube 4 can drive the surface guide during the descent. The guide cylinder 13 descends, and through the connection of the guide cylinder 13, guide plate 14 and guide rod 15, the guide plate 14 and guide rod 15 can descend stably along the limiting cylinder 16. At this time, the return spring 17 is compressed by the pressure of the upper guide plate 14. After fertilization, the operator releases the step on the threaded pedal 8. At this time, the return spring 17 rebounds and drives the guide plate 14 to quickly return to its original position, so that the conical fertilizer head 5 can quickly return to its original position. The quick return mechanism simplifies the cumbersome operation of the entire fertilization process and improves fertilization efficiency.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable handheld precision drip fertilizer applicator for seedlings, comprising a liquid storage tank (1), characterized in that: A metering pump (2) is fixedly installed at the bottom of the storage tank (1) via a pipe. The output end of the metering pump (2) is fixedly connected to a corrugated pipe (3) via a pipe. The bottom end of the corrugated pipe (3) is fixedly connected to a fertilizer pipe (4). The bottom end of the fertilizer pipe (4) is fixedly connected to a conical fertilizer head (5). The outer surface of the conical fertilizer head (5) is provided with fertilizer holes (6) arranged at equal angles. A threaded cylinder (7) is fixedly connected to the outer surface of the fertilizer pipe (4). A threaded pedal (8) is threadedly connected to the outer surface of the threaded cylinder (7). A connecting frame (9) is fixedly connected to the bottom surface of the threaded pedal (8). A limit ring (10) is fixedly connected to the bottom surface of the connecting frame (9). A cover (11) is threadedly connected to the upper surface of the storage tank (1). A vent hole (12) is provided on the upper surface of the cover (11).

2. The portable handheld precision drip fertilizer applicator for seedlings according to claim 1, characterized in that: The outer surface of the fertilizer pipe (4) is fixedly connected to a guide cylinder (13), and the outer surface of the guide cylinder (13) is fixedly connected to two guide discs (14). The two guide discs (14) are fixedly connected to guide rods (15) arranged at equal angles.

3. The portable handheld precision drip fertilizer applicator for seedlings according to claim 2, characterized in that: The outer surface of the guide cylinder (13) is slidably connected to the limiting cylinder (16), the outer surfaces of the two guide discs (14) are slidably connected to the inner wall of the limiting cylinder (16), and the outer surface of each guide rod (15) is slidably connected to the inner wall of the limiting cylinder (16).

4. The portable handheld precision drip fertilizer applicator for seedlings according to claim 3, characterized in that: One of the guide discs (14) has a bottom surface fixedly connected with a set of return springs (17) arranged at equal angles, and the bottom end of each set of return springs (17) is fixedly connected to the inner bottom wall of the limiting cylinder (16).

5. The portable handheld precision drip fertilizer applicator for seedlings according to claim 3, characterized in that: The upper surface of the limiting cylinder (16) is fixedly connected to a support frame (18), and the upper surface of the support frame (18) is fixedly connected to the bottom surface of the liquid storage tank (1).

6. The portable handheld precision drip fertilizer applicator for seedlings according to claim 3, characterized in that: The outer surface of the limiting cylinder (16) is fixedly connected to the mounting base (19), and the upper surface of the mounting base (19) is fixedly installed with the channel steel frame (20). The upper surface of the channel steel frame (20) is fixedly installed with the bottom surface of the metering pump (2).

7. The portable handheld precision drip fertilizer applicator for seedlings according to claim 6, characterized in that: The inner wall of the channel steel frame (20) is fixedly connected to a support plate (21), and a battery module (22) is fixedly installed on the upper surface of the support plate (21). The battery module (22) is electrically connected to the metering pump (2).

8. The portable handheld precision drip fertilizer applicator for seedlings according to claim 7, characterized in that: A fixing frame (23) is fixedly connected to the outer surface of the mounting base (19), and a grounding base plate (28) is fixedly installed on the right side of the fixing frame (23).

9. The portable handheld precision drip fertilizer applicator for seedlings according to claim 8, characterized in that: A handheld rod (24) is fixedly connected to the right side of the fixed frame (23), and a retainer (25) is fixedly installed on the outer surface of the handheld rod (24). The inner wall of the retainer (25) is fixedly installed on the outer surface of the liquid storage tank (1).

10. The portable handheld precision drip fertilizer applicator for seedlings according to claim 9, characterized in that: An operating handle (26) is fixedly installed at the top of the hand lever (24), and an operating panel (27) is fixedly installed on the upper surface of the operating handle (26). The operating panel (27) is electrically connected to the metering pump (2) and the battery module (22).

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