Fertilizer planting device for forest cultivation
By designing a fertilizer-planting device with a hollow sphere and a top cone structure, the problem of soil clogging the fertilizer outlet when the duct is inserted into the soil layer was solved, achieving stable delivery of liquid fertilizer and improving soil fertility, thus promoting seedling growth.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING FORESTRY UNIV
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-08
AI Technical Summary
In common liquid fertilizer planting devices, the soil can easily clog the fertilizer outlet when the conduit is inserted into the soil, preventing the liquid fertilizer from being effectively implanted into the soil and affecting the normal use of the planting device.
A fertilizer dispensing device was designed, which uses a hollow sphere to cover the fertilizer outlet. When the electric push rod is inserted into the soil, the hollow sphere prevents soil from entering the fertilizer outlet. Combined with the top cone and return spring structure, it ensures smooth delivery of liquid fertilizer. The amount of liquid fertilizer is controlled by a solenoid valve to ensure a stable amount of fertilizer for each application.
This effectively prevents the fertilizer outlet from becoming clogged, ensuring that the liquid fertilizer can penetrate deep into the soil, enhance soil fertility, promote seedling growth, and guarantee the stability of the amount of fertilizer applied each time.
Smart Images

Figure CN224205724U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of forest cultivation technology, and in particular to a fertilizer device for forest cultivation. Background Technology
[0002] Forest cultivation is a production process that utilizes solar energy and other substances through biotransformation in trees and forests to produce food, industrial raw materials, bioenergy, and other necessities for human use, while simultaneously creating and protecting the environment essential for human and biological survival. With increasing environmental awareness, forests damaged in the early stages are generally being cultivated to help them quickly restore their ecological environment.
[0003] In forest cultivation, to ensure rapid growth of seedlings, sufficient nutrients are needed. However, the nutrients contained in forest soil are limited and insufficient to support rapid seedling growth. Therefore, in the early stages of forest cultivation, fertilization devices are used to provide fertilizer to the seedlings, improving soil fertility and better meeting the growth needs of the seedlings. Common liquid fertilizer fertilization devices require inserting a delivery tube into the soil layer to allow the liquid fertilizer to penetrate deeper, facilitating root absorption. However, during insertion, the tube compresses the soil, causing some soil to enter the tube through exposed fertilization holes, blocking the tube and holes. This prevents the liquid fertilizer from effectively penetrating the soil, affecting the effective use of the fertilization device. Utility Model Content
[0004] The purpose of this application is to provide a fertilization device for forest cultivation, which solves the problem mentioned in the background art that, in order to allow the liquid fertilizer to penetrate the soil better, the fertilization device requires inserting a fertilization conduit into the soil layer before injecting the liquid fertilizer into the soil layer. This allows the seedling roots to absorb the fertilizer better. However, during the insertion of the conduit into the soil layer, the conduit squeezes the soil layer, causing some soil to enter the conduit along the fertilizer outlet hole directly exposed on the conduit, blocking the conduit and the fertilizer outlet hole, resulting in the liquid fertilizer not being effectively implanted into the soil layer, thus affecting the normal use of the fertilization device.
[0005] To achieve the above objectives, this application provides the following technical solution: a fertilizer device for forest cultivation, comprising a carrier plate, on which a first electric actuator, a pumping component, and a fertilizer supply component are mounted. The fertilizer supply component supplies liquid fertilizer to the pumping component. A fixing block is fixedly installed at the output end of the first electric actuator, and a fixing tube is fixedly inserted into the fixing block. A hollow sphere is fixedly connected to the bottom end of the fixing tube. A pointed cone is fixed to the bottom of the hollow sphere. A first transversely arranged conduit is fixed inside the hollow sphere, and an inlet and outlet are provided on the hollow sphere that communicate with the first conduit. The first conduit is fixedly connected to the inlet / outlet hole by an infusion tubing. The infusion assembly is used to deliver liquid fertilizer into the first conduit. A limit block is fixed inside the first conduit. A return spring is fixed on the side of the limit block near the inlet / outlet hole. A top cone is fixed on the other end of the return spring. A second conduit is fixed on the side of the top cone near the limit block. The first conduit is sleeved on the outside of the second conduit, and the first conduit and the second conduit are slidably engaged. Both the top cone and the second conduit are slidably engaged with the inner wall of the inlet / outlet hole. Two fertilizer outlet holes are opened on the second conduit.
[0006] Furthermore, a sealing element is provided at the junction of the first conduit and the second conduit.
[0007] Furthermore, a guide rod is slidably inserted into the limiting block, one end of the guide rod is fixedly mounted on the top cone, and the other end of the guide rod is fixed with a stop block.
[0008] Furthermore, the pumping assembly includes a tray and a second electric actuator. The tray is mounted on the fertilizer supply assembly, and the second electric actuator is fixedly mounted on the carrier plate. A transfer cylinder is fixed on the tray, and a piston is fixedly mounted on the output end of the second electric actuator. The piston slides in contact with the inner wall of the transfer cylinder. An infusion tube and a liquid collection tube are fixedly connected to the bottom of the transfer cylinder. The infusion tube is fixed and connected to the infusion hose, and the liquid collection tube is connected to the fertilizer supply assembly. Solenoid valves are installed on both the infusion tube and the liquid collection tube.
[0009] Furthermore, the fertilizer supply component includes a base, on which two rods are fixedly inserted. Both ends of the rods are rotatably connected to rollers via bearings. A storage bin and a handle are installed on the top of the base. A feeding port is opened on the top of the storage bin, and a cover plate is hinged to the top of the storage bin.
[0010] Furthermore, a drive motor is fixedly installed on the top of the storage tank, and a carrier column is rotatably connected to the top of the inner side of the storage tank through a bearing. The carrier column is driven by the drive motor, and several stirring rods are fixed on the carrier column.
[0011] In summary, the technical effects and advantages of this utility model are as follows:
[0012] In this invention, a hollow sphere is used to cover the fertilizer outlet hole. When the fixing tube, hollow sphere, and pointed cone are inserted into the soil layer under the push of the first electric actuator, the soil is blocked by the hollow sphere and cannot directly enter the fertilizer outlet hole, thus preventing the fertilizer outlet hole from being blocked. When the pumping component delivers liquid fertilizer to the first conduit along the infusion hose, the increasing liquid fertilizer delivery pressure causes the pointed cone and the second conduit to move outward along the inlet and outlet holes, forcing the fertilizer outlet hole to leave the hollow sphere. In this way, the liquid fertilizer delivered along the fertilizer outlet hole can soak the soil, enhance soil fertility, and help seedlings grow better.
[0013] In this invention, by controlling the opening and closing of two solenoid valves, the piston under the pull of the second electric push rod slides up and down inside the transfer cylinder, and the liquid fertilizer in the fertilizer supply component can be drawn into the transfer cylinder along the liquid extraction pipe. Then, the liquid fertilizer is sent to the liquid delivery hose along the delivery hard pipe, and finally the fertilization operation is completed, ensuring that the amount of liquid fertilizer for each fertilization is basically stable. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below.
[0015] Figure 1 This is a three-dimensional structural schematic diagram of a fertilizer device for forest cultivation according to an embodiment of this application;
[0016] Figure 2 This is a diagram showing the positional relationship between the first electric actuator, the fixing block, the fixing tube, and the hollow ball in the embodiments of this application.
[0017] Figure 3 This is a schematic diagram of the internal structure of the fixed tube, hollow ball, first conduit, and second conduit in the embodiments of this application;
[0018] Figure 4 This is a cross-sectional view of the extraction component in an embodiment of this application;
[0019] Figure 5 This is a three-dimensional structural diagram of the fertilizer supply component in an embodiment of this application;
[0020] Figure 6 This is a partial structural schematic diagram of the fertilizer supply component in an embodiment of this application.
[0021] In the diagram: 1. Carrier plate; 2. First electric actuator; 3. Fixing block; 4. Fixing tube; 5. Hollow sphere; 6. Cone; 7. First conduit; 8. Infusion tubing; 9. Inlet / outlet port; 10. Limiting block; 11. Return spring; 12. Top cone; 13. Second conduit; 14. Outlet port; 15. Guide rod; 16. Stop block; 17. Support plate; 18. Second electric actuator; 19. Transmission cylinder; 20. Piston; 21. Infusion tubing; 22. Liquid collection tube; 23. Base; 24. Roller; 25. Storage tank; 26. Handle; 27. Cover plate; 28. Drive motor; 29. Carrier column; 30. Stirring rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example: Reference Figure 1-6The illustrated fertilization device for forest cultivation includes a carrier plate 1. A first electric actuator 2, a pumping assembly, and a fertilizer supply assembly are mounted on the carrier plate 1. The fertilizer supply assembly supplies liquid fertilizer to the pumping assembly. A fixing block 3 is fixedly mounted on the output end of the first electric actuator 2. A fixing pipe 4 is fixedly inserted into the fixing block 3. A hollow sphere 5 is fixedly connected to the bottom end of the fixing pipe 4. A pointed cone 6 is fixed to the bottom of the hollow sphere 5. A horizontally arranged first conduit 7 is fixed inside the hollow sphere 5, and an inlet / outlet hole communicating with the first conduit 7 is provided on the hollow sphere 5. 9. An infusion tubing 8 is fixedly connected between the first conduit 7 and the pumping assembly. The pumping assembly is used to deliver liquid fertilizer into the first conduit 7. A limit block 10 is fixed inside the first conduit 7. A return spring 11 is fixed on the side of the limit block 10 near the inlet / outlet hole 9. A top cone 12 is fixed on the other end of the return spring 11. A second conduit 13 is fixed on the side of the top cone 12 near the limit block 10. The first conduit 7 is sleeved on the outside of the second conduit 13, and the first conduit 7 and the second conduit 13 are in sliding fit. A seal is provided at the joint of 13 to enhance the tightness of the connection between the two, so that when the first conduit 7 is pressurized, the pressure can be transmitted to the top cone 12 and the second conduit 13. Both the top cone 12 and the second conduit 13 slide against the inner wall of the inlet / outlet hole 9. When the top cone 12 is pushed outward along the inlet / outlet hole 9 by the liquid fertilizer pressure, it can not only push away the soil that has entered the inlet / outlet hole 9, but also make it easier to insert into the soil. The second conduit 13 has two fertilizer outlet holes 14. When the pumping component stops supplying liquid fertilizer to the first conduit 7, The pressure of the liquid fertilizer on the top cone 12 and the second conduit 13 is reduced. The return spring 11 can use its own elasticity to drive the top cone 12 back into the inlet and outlet hole 9, so that the hollow ball 5 wraps around the fertilizer outlet hole 14 again, preventing soil from entering the fertilizer outlet hole 14 when the hollow ball 5 is pulled out of the soil layer. A guide rod 15 is slidably inserted on the limiting block 10. One end of the guide rod 15 is fixedly installed on the top cone 12, and the other end of the guide rod 15 is fixed with a stop block 16. The use of the limiting block 10 and the stop block 16 is to limit the movable range of the second conduit 13.
[0024] By using the hollow ball 5 to cover the fertilizer outlet 14, when the fixed tube 4, hollow ball 5, and pointed cone 6 are inserted into the soil layer under the push of the first electric push rod 2, the soil cannot directly enter the fertilizer outlet 14 due to the obstruction of the hollow ball 5, thus preventing the fertilizer outlet 14 from being blocked. When the pumping component delivers liquid fertilizer to the first conduit 7 along the infusion hose 8, the increasing liquid fertilizer delivery pressure causes the pointed cone 12 and the second conduit 13 to move along the inlet and outlet holes 9 to the outside of the hollow ball 5, forcing the fertilizer outlet 14 to leave the hollow ball 5. In this way, the liquid fertilizer delivered along the fertilizer outlet 14 can soak the soil and enhance soil fertility.
[0025] The pumping assembly includes a tray 17 and a second electric push rod 18. The tray 17 is installed on the fertilizer supply assembly, and the second electric push rod 18 is fixedly installed on the carrier plate 1. A transfer cylinder 19 is fixed on the tray 17. A piston 20 is fixedly installed at the output end of the second electric push rod 18. The piston 20 slides with the inner wall of the transfer cylinder 19. The bottom of the transfer cylinder 19 is fixedly connected to an infusion tube 21 and a liquid collection tube 22. The infusion tube 21 is fixed and connected to the infusion hose 8. The liquid collection tube 22 is connected to the fertilizer supply assembly. Solenoid valves are installed on both the infusion tube 21 and the liquid collection tube 22.
[0026] By controlling the opening and closing of the two solenoid valves, when the piston 20 under the pull of the second electric push rod 18 slides up and down inside the transfer cylinder 19, the liquid fertilizer in the fertilizer supply component can be drawn into the transfer cylinder 19 along the liquid extraction pipe 22. Then, the liquid fertilizer is sent to the liquid delivery hose 8 along the delivery hard pipe 21, and finally the fertilization operation is completed, ensuring that the amount of liquid fertilizer for each fertilization is basically stable.
[0027] The fertilizer supply component includes a base 23, on which two rods are fixedly inserted. Both ends of the rods are rotatably connected to rollers 24 via bearings. A storage tank 25, a handle 26, and a battery pack are installed on the top of the base 23. A feeding port is opened on the top of the storage tank 25, and a cover plate 27 is hinged to the top of the storage tank 25. A drive motor 28 is fixedly installed on the top of the storage tank 25. The battery pack can supply power to the first electric push rod 2, the second electric push rod 18, the solenoid valve, and the drive motor 28. A carrier column 29 is rotatably connected to the top of the inner side of the storage tank 25 via bearings. The carrier column 29 is driven by the drive motor 28, and multiple stirring rods 30 are fixed on the carrier column 29.
[0028] The grip 26, in conjunction with four rollers 24, makes the fertilizer supply assembly easier to move. Liquid fertilizer can be added into the storage tank 25 along the feeding port. The rotating cover 27 can cover the feeding port to prevent foreign objects from entering the storage tank 25. The drive motor 28 is activated to drive the carrier column 29 and the stirring rod 30 to rotate, which can stir the liquid fertilizer in the storage tank 25, prevent the liquid fertilizer from separating after preparation, and ensure the stability and balance of the liquid fertilizer supply.
[0029] Working principle of this utility model:
[0030] Flip the cover plate 27 and inject the prepared liquid fertilizer into the storage tank 25 through the feeding port for temporary storage. After the fertilizer is injected, flip the cover plate 27 to cover the feeding port and start the drive motor 28 to drive the carrier column 29 and the stirring rod 30 to rotate, so that the stirring rod 30 can stir the liquid fertilizer in the storage tank 25 to avoid the liquid fertilizer from separating and affecting the fertilization effect. Move the device with the help of the handle 26 and four rollers 24 so that the device can move in the forest.
[0031] When the device reaches the vicinity of the root zone of the target seedling, the first electric actuator 2 extends, causing it to push the fixed tube 4, hollow ball 5, and cone 6 downwards, forcing them and part of the fixed tube 4 into the soil. The solenoid valve on the liquid extraction tube 22 is opened, and the second electric actuator 18 retracts, pulling the piston 20 upwards. The piston 20 then draws a certain amount of liquid fertilizer from the storage tank 25 into the transfer cylinder 19 along the liquid extraction tube 22. After fertilizer extraction, the solenoid valve on the liquid extraction tube 22 is closed, and the solenoid valve on the infusion tube 21 is opened. The second electric actuator 18 pushes the piston 20 downwards, causing it to deliver the liquid fertilizer inside the transfer cylinder 19 along the infusion tube 21 to the infusion hose 8. The liquid fertilizer enters the first conduit 7. As the pumping assembly continuously supplies liquid fertilizer into the first conduit 7, the first conduit 7... Increased hydraulic pressure pushes the top cone 12 and the second conduit 13 outwards from the hollow sphere 5. The top cone 12 can squeeze out the soil entering the inlet / outlet hole 9, and the fertilizer outlet hole 14 leaves the hollow sphere 5. Liquid fertilizer can be injected into the soil along the fertilizer outlet hole 14 to enhance soil fertility and promote seedling growth. After the fertilizer in the rotating cylinder 19 is basically discharged, the second electric push rod 18 is operated to drive the piston 20 to move upwards a short distance. At this time, some fertilizer in the infusion hose 8 will also flow back into the rotating cylinder 19. As a result, the pressure inside the first conduit 7 is greatly reduced. Under the traction of the return spring 11, the top cone 12 can quickly return to the inside of the hollow sphere 5. Because the fertilizer outlet hole 14 impacts the surrounding soil when discharging liquid fertilizer, the surrounding soil moves to other positions with the liquid fertilizer. As a result, when the top cone 12 retracts into the hollow sphere 5, the soil will not enter the fertilizer outlet hole 14.
[0032] After closing the solenoid valve on the infusion tube 21, the first electric actuator 2 can be operated to retract, causing the fixed tube 4, hollow ball 5, and pointed cone 6 to leave the soil layer, thus completing the fertilization treatment for forest cultivation.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fertilizer device for forest cultivation, comprising a carrier plate (1), characterized in that: The carrier plate (1) is equipped with a first electric actuator (2), a pumping assembly, and a fertilizer supply assembly. The fertilizer supply assembly is used to supply liquid fertilizer to the pumping assembly. A fixing block (3) is fixedly installed at the output end of the first electric actuator (2). A fixing tube (4) is fixedly inserted into the fixing block (3). A hollow sphere (5) is fixedly connected to the bottom end of the fixing tube (4). A pointed cone (6) is fixedly fixed to the bottom of the hollow sphere (5). A first conduit (7) is fixedly arranged horizontally inside the hollow sphere (5). An inlet and outlet hole (9) connected to the first conduit (7) is opened on the hollow sphere (5). An infusion hose (8) is fixedly connected between the first conduit (7) and the pumping assembly. The component is used to deliver liquid fertilizer into the first conduit (7). A limiting block (10) is fixed inside the first conduit (7). A return spring (11) is fixed on the side of the limiting block (10) near the inlet / outlet hole (9). A top cone (12) is fixed on the other end of the return spring (11). A second conduit (13) is fixed on the side of the top cone (12) near the limiting block (10). The first conduit (7) is sleeved on the outside of the second conduit (13), and the first conduit (7) and the second conduit (13) slide together. The top cone (12) and the second conduit (13) slide together with the inner wall of the inlet / outlet hole (9). Two fertilizer outlet holes (14) are opened on the second conduit (13).
2. The fertilization device for forest cultivation according to claim 1, characterized in that: A seal is provided at the junction of the first conduit (7) and the second conduit (13).
3. The fertilization device for forest cultivation according to claim 1, characterized in that: A guide rod (15) is slidably inserted into the limiting block (10). One end of the guide rod (15) is fixedly installed on the top cone (12), and the other end of the guide rod (15) is fixed with a stop block (16).
4. A fertilizer device for forest cultivation according to claim 1, characterized in that: The pumping assembly includes a tray (17) and a second electric actuator (18). The tray (17) is mounted on the fertilizer supply assembly. The second electric actuator (18) is fixedly mounted on the carrier plate (1). A transfer cylinder (19) is fixed on the tray (17). A piston (20) is fixedly mounted on the output end of the second electric actuator (18). The piston (20) slides against the inner wall of the transfer cylinder (19). The bottom of the transfer cylinder (19) is fixedly connected to an infusion tube (21) and a liquid collection tube (22). The infusion tube (21) is fixed and connected to an infusion hose (8). The liquid collection tube (22) is connected to the fertilizer supply assembly. Solenoid valves are provided on both the infusion tube (21) and the liquid collection tube (22).
5. A fertilizer device for forest cultivation according to claim 4, characterized in that: The fertilizer supply component includes a base (23), on which two rods are fixedly inserted. Both ends of the rods are rotatably connected to rollers (24) via bearings. A storage bucket (25) and a handle (26) are installed on the top of the base (23). A feeding port is opened on the top of the storage bucket (25), and a cover plate (27) is hinged to the top of the storage bucket (25).
6. A fertilizer device for forest cultivation according to claim 5, characterized in that: A drive motor (28) is fixedly installed on the top of the storage tank (25). A carrier column (29) is rotatably connected to the top of the inner side of the storage tank (25) through a bearing. The carrier column (29) is driven by the drive motor (28), and several stirring rods (30) are fixed on the carrier column (29).