Fertilizing device for blueberry planting

Abstract

The invention is suitable for the technical field of fertilization, and provides a fertilization device for blueberry planting. According to the fertilization device for blueberry planting, the buried fertilization mechanisms are symmetrically arranged on the two sides of the material distributing barrel, precise injection of two rows of blueberry rhizospheres is completed at the same time through one-time walking, the efficiency is doubled compared with a traditional single-point hole-by-hole mode, the labor intensity is remarkably reduced, the fertilization efficiency and the fertilizer utilization rate are improved, and the application range is wide. The method is especially suitable for precise deep application of acidic fertilizers and organic-inorganic compound fertilizers in blueberry planting.

Description

Technical Field

[0001] This invention belongs to the field of fertilization technology, and in particular relates to a fertilization device for blueberry cultivation. Background Technology

[0002] Blueberry fertilization should follow the principles of favoring acidic soil and applying small amounts frequently. It is recommended to use acidic fertilizers such as ammonium sulfate and potassium dihydrogen phosphate, and to apply fertilizer scientifically at four key stages: before bud break, after flowering, during fruit expansion, and after harvest. Organic fertilizers, such as well-rotted sheep manure and leaf mold, should account for 70% of the total fertilizer application. Chemical fertilizers include ammonium sulfate (ammonium nitrogen), potassium dihydrogen phosphate (phosphorus and potassium fertilizer), and potassium sulfate (potassium chloride should be avoided). Micronutrients should be supplemented, such as iron, zinc, and boron. For example, a 0.1% ferrous sulfate solution can be used to prevent yellowing leaves.

[0003] Currently, when fertilizing blueberries, people usually dig holes in the ground manually, put a handful of fertilizer into the holes, and then fill the holes with soil. This process is quite cumbersome and inefficient. Although there are some methods on the market that use drills to make holes and then put fertilizer in, this method cannot make hole making and fertilization happen simultaneously, and is still inefficient. Summary of the Invention

[0004] This invention provides a fertilization device for blueberry cultivation, aiming to solve the problem of low fertilization efficiency in blueberry cultivation as mentioned in the background art.

[0005] To solve the above problems, the present invention is implemented as follows: a fertilization device for blueberry cultivation, comprising: a support and a tank, wherein the tank is fixedly mounted on the support; each of the four corners of the support is fixedly mounted with an electric telescopic rod, and each of the four corners is slidably mounted with a support leg; the four support legs are respectively fixedly connected to the output rods of the four electric telescopic rods, so that the electric telescopic rods control the extension and retraction of the support legs; each of the four support legs is rotatably mounted with a traveling wheel to allow the device to move as a whole; a feeding hopper is installed on the top of the tank, for... The system includes a feeding section with a distribution cylinder at the bottom, which is connected to the tank body and used to collect fertilizer discharged from the tank. A stirring shaft is rotatably mounted inside the tank, with its bottom end extending into the distribution cylinder. A discharge auger is fixedly mounted on the bottom of the stirring shaft, located at the bottom of both the distribution cylinder and the tank body, so that the fertilizer in the tank is evenly discharged into the distribution cylinder when the stirring shaft and discharge auger rotate. Both sides of the distribution cylinder are equipped with soil-applying fertilization mechanisms for applying fertilizer to the soil around the plants on both sides of the walking area.

[0006] Preferably, the soil-inserting fertilization mechanism includes a fertilization pipe fixedly installed on the side of the distributing cylinder. The fertilization pipe is inclined downwards, with the discharge end pointing downwards and vertically towards the ground, forming an overall "7" shape. It is used to discharge fertilizer from the distributing cylinder. An electric telescopic rod is fixedly installed on the side of the fertilization pipe. The electric telescopic rod is parallel to the discharge end of the fertilization pipe. A lifting plate is fixedly installed on the output rod of the electric telescopic rod. The lifting plate is located directly below the discharge end of the fertilization pipe. A discharge pipe is fixedly installed through the lifting plate. The discharge pipe is slidably sleeved outside the discharge end of the fertilization pipe to adjust the distance from the ground. Two split sealing plates are slidably installed at the bottom of the discharge pipe. When the two sealing plates are closed, they seal the bottom of the discharge pipe. When they are open, they allow fertilizer to be discharged from the discharge pipe. Soil-separating inserts are fixedly installed at the bottom of each of the two sealing plates. These inserts move with the sealing plates and are used to insert into the soil. When they are separated, they create a pit in the soil so that the fertilizer discharged from the discharge pipe can enter.

[0007] Preferably, a scraper and multiple stirring rods are fixedly installed on the stirring shaft. The scraper and multiple stirring rods are located inside the tank, and the scraper is in contact with the inner wall of the tank for scraping off impurities when rotating.

[0008] Preferably, a motor is fixedly installed on the top of the tank, a bevel gear is fixedly installed on the output shaft of the motor, and a bevel gear is fixedly installed on the top of the stirring shaft outside the tank. The bevel gear meshes with the bevel gear to drive the stirring shaft to rotate.

[0009] Preferably, a handrail is fixedly installed on the top of the support for hand operation, and a controller is fixedly installed on the handrail.

[0010] Preferably, a lifting frame is fixedly installed on the top of the support, and a battery is installed on the lifting frame, which is connected to the controller.

[0011] Preferably, the sealing plate has a rectangular guide opening, and a rectangular guide strip is slidably disposed inside the rectangular guide opening. Both ends of the rectangular guide strip extend to the outside of the sealing plate and are respectively fixedly installed with connecting plates. Both connecting plates are fixedly connected to the bottom of the discharge pipe for guiding when the sealing plate is opened and closed.

[0012] Preferably, guide posts are fixedly installed on both sides of the discharge pipe, and synchronous buckles are slidably sleeved on both guide posts. The two synchronous buckles are fixedly connected to the two sealing plates respectively, and are used to guide the sealing plates when they slide. Limiting plates are fixedly installed on the ends of the two guide posts away from the discharge pipe. Springs are slidably sleeved on both guide posts. The two ends of the springs abut against the synchronous buckles and the limiting plates respectively, so that the springs are compressed when the sealing plates and the synchronous buckles slide open. A winding drum is fixedly rotatably sleeved on the discharge pipe. Pull wires are slidably installed through the two limiting plates. The two ends of the pull wires are fixedly connected to the winding drum and the sealing plates respectively, so that the opening and closing of the sealing plates are controlled by the springs when the winding drum retracts and extends the pull wires.

[0013] Preferably, the bottom of the tank has a discharge port, the diameter of which is the same as the inner diameter of the distribution cylinder, and the gap between the inner wall of the discharge port and the discharge auger is 3-5 mm.

[0014] Preferably, one side of the bottom of the soil dividing plate is a slope. When two corresponding soil dividing plates are attached, the slope is located on opposite sides of the two soil dividing plates, and the bottom together form a cone to facilitate soil breaking.

[0015] Compared with related technologies, the fertilization device for blueberry cultivation provided by the present invention has the following beneficial effects: Compared with existing technologies, the fertilization device for blueberry cultivation provided in this solution features a symmetrically arranged soil-inserting fertilization mechanism on both sides of the dispensing cylinder, enabling precise injection of fertilizer into the root zone of two rows of blueberries in a single pass. This doubles the efficiency compared to the traditional "single-point-by-hole" method. The device significantly reduces labor intensity and improves fertilization efficiency and fertilizer utilization. It is particularly suitable for the precise deep application of acidic fertilizers and organic-inorganic compound fertilizers in blueberry cultivation. Attached Figure Description

[0016] Figure 1 This is a top-view three-dimensional structural diagram of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 for Figure 3 An enlarged structural diagram of part A shown in the figure; Figure 5 for Figure 3 An enlarged structural diagram of part B shown in the figure; Figure 6 for Figure 3 An enlarged structural diagram of section C shown in the figure; Figure 7 for Figure 6 An enlarged structural diagram of part D shown in the figure; Figure 8 for Figure 6 An enlarged structural diagram of part E shown in the figure; Figure 9 for Figure 6 An enlarged structural diagram of part F shown in the figure; Figure 10 A top-view three-dimensional structural diagram of the material distribution cylinder, the conical toothed disc, the motor, the separating cone, and the material distribution block; Figure 11 This is a front view exploded structural diagram of the stirring shaft, distributing cylinder, and shell section; Figure 12 This is a front-view three-dimensional structural diagram of an in-soil fertilization mechanism. Figure 13 This is a front-view three-dimensional structural diagram of the sealing plate section; Figure 14 This is a front-view three-dimensional structural diagram of the lower half of the soil-inserting fertilization mechanism, including the hoisting plate and discharge pipe.

[0017] Reference numerals in the attached drawings: 1. Support; 2. Tank body; 3. Electric telescopic rod one; 4. Support leg; 5. Traveling wheel; 6. Feed hopper; 7. Distributor cylinder; 8. Mixing shaft; 9. Discharge auger; 10. Fertilizer pipe; 11. Electric telescopic rod two; 12. Lifting plate; 13. Discharge pipe; 14. Sealing plate; 15. Soil-separating insert plate; 16. Scraper frame; 17. Mixing rod; 18. Motor one; 19. Bevel gear one; 20. Bevel gear disc one; 21. Handrail; 22. Controller; 23. Lifting frame; 24. Battery; 25. Rectangular guide port; 26. Rectangular guide bar; 27. Connecting plate; 28. Guide column; 29. ​​Synchronous buckle plate; 30. Limiting plate; 31. Spring; 32. Winding spool; 33. Pull wire; 34. Gear; 36. Drive shaft; 37. Drive wheel; 38. Rectangular shaft; 39. Shaft seat one; 40. Rectangular cylinder; 41. Conical gear disc two; 42. Shaft seat two; 43. Long shaft; 44. Conical gear two; 45. Conical gear three; 46. Conical gear disc three; 47. Motor two; 48. Output conical gear; 49. Separating cone; 50. Material dividing block; 51. Air inlet; 52. Blowing hole; 53. Cylinder shell; 54. Air inlet; 55. Exhaust pipe; 56. Fan shaft; 57. Fixing plate; 58. Driven shaft; 59. Conical gear four; 60. Pulley; 61. Synchronous belt. Detailed Implementation

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This invention provides a fertilization device for blueberry cultivation, such as... Figure 1-14 As shown, the fertilization device for blueberry cultivation includes: a support 1 and a tank 2, with the tank 2 fixedly mounted on the support 1; each of the four corners of the support 1 is fixedly equipped with an electric telescopic rod 3, and each of the four corners is slidably equipped with a support leg 4, the four support legs 4 being fixedly connected to the output rods of the four electric telescopic rods 3, so that the electric telescopic rods 3 control the extension and retraction of the support legs 4; each of the four support legs 4 is rotatably equipped with a traveling wheel 5 to allow the device to move as a whole; the top of the tank 2 is equipped with a feeding hopper 6 for feeding, and the bottom is equipped with a dispensing device. The distributing cylinder 7 is connected to the tank body 2 and is used to collect the fertilizer discharged from the tank body 2. A stirring shaft 8 is rotatably installed inside the tank body 2. The bottom end of the stirring shaft 8 extends into the distributing cylinder 7. A discharge auger 9 is fixedly installed on the bottom part of the stirring shaft 8. The discharge auger 9 is located inside the bottom of the distributing cylinder 7 and the tank body 2 so that when the stirring shaft 8 and the discharge auger 9 rotate, the fertilizer in the tank body 2 is evenly discharged into the distributing cylinder 7. Both sides of the distributing cylinder 7 are provided with soil-inserting fertilization mechanisms for applying fertilizer to the soil around the plants on both sides of the walking area.

[0020] In this embodiment, during use, fertilizer is first poured into tank 2 through feed hopper 6. Then, the whole machine is moved to the row by walking wheels 5. Electric telescopic rod 3 drives support leg 4 to adjust, lifting support 1 and tank 2 off the ground to a preset height and keeping them stable. When fertilizing, the soil-inserting fertilization mechanism on both sides of the distributing cylinder 7 is simultaneously inserted into the soil of the corresponding plant root zone. The stirring shaft 8 is started to drive the discharge auger 9 to rotate, so that fertilizer continuously and evenly falls into the distributing cylinder 7. The fertilizer output by the discharge auger 9 is directly sent into the soil-inserting fertilization mechanism through the distributing cylinder 7, completing the one-time fertilization of simultaneous opening and injection on both sides. The above actions can be repeated to move to the next hole to achieve continuous operation.

[0021] In this solution, the electric telescopic rod 3 and the support leg 4 form a closed loop for lifting and supporting. During operation, the walking wheel 5 can be lifted off the ground to ensure the adjustment of the soil penetration depth of the soil-penetrating fertilization mechanism and accurate fertilizer positioning.

[0022] The stirring shaft 8 and the discharge auger 9 are coaxially arranged, which not only prevents acidic or water-containing fertilizers from arching and stratifying in the tank 2, but also integrates the three functions of stirring, metering and discharging into the same rotating component.

[0023] The fertilizer dispensing cylinder 7 is symmetrically arranged with soil-inserting fertilizer dispensing mechanisms on both sides, enabling precise injection of fertilizer into the root zone of two rows (or two plants) of blueberries in one pass. This doubles the efficiency compared to the traditional "single-point-by-hole" mode, and the fertilizer is applied deep into the root layer, reducing the volatilization of ammonium nitrogen, which meets the requirements of blueberries for "small amounts, multiple times, and deep application in acidic soil".

[0024] In summary, this device significantly reduces labor intensity, improves fertilization efficiency and fertilizer utilization, and is particularly suitable for the precise deep application of acidic fertilizers and organic-inorganic compound fertilizers in blueberry cultivation.

[0025] In a further preferred embodiment of the present invention, the soil-inserting fertilization mechanism includes a fertilization pipe 10 fixedly installed on the side of the distributing cylinder 7. The fertilization pipe 10 is inclined downwards, and the discharge end is vertically downwards towards the ground, forming an overall "7" shape, for discharging fertilizer from the distributing cylinder 7. An electric telescopic rod 11 is fixedly installed on the side of the fertilization pipe 10. The electric telescopic rod 11 is parallel to the discharge end of the fertilization pipe 10. A lifting plate 12 is fixedly installed on the output rod of the electric telescopic rod 11, and the lifting plate 12 is located directly below the discharge end of the fertilization pipe 10. A discharge pipe 13 is fixedly installed through the hoisting plate 12. The discharge pipe 13 is slidably sleeved outside the discharge end of the fertilizer pipe 10 to adjust the distance from the ground. Two split sealing plates 14 are slidably installed at the bottom of the discharge pipe 13. When the two sealing plates 14 are closed, they seal the bottom of the discharge pipe 13. When they are open, the discharge pipe 13 discharges fertilizer. Soil separating plates 15 are fixedly installed at the bottom of each of the two sealing plates 14. They move with the sealing plates 14 and are used to insert into the soil. When they are separated, the soil forms a pit so that the fertilizer discharged from the discharge pipe 13 can enter.

[0026] In this embodiment, the electric telescopic rod 11 simultaneously extends the lifting plate 12, and the discharge pipe 13 slides down the outer wall of the fertilizer pipe 10 until the soil separating plate 15 penetrates to a predetermined depth; the two sealing plates 14 are opened in a controlled manner, causing the soil separating plate 15 to separate to both sides and squeeze out of the pit in the root zone; the fertilizer in the distribution cylinder 7 reaches the bottom of the pit through the "7"-shaped fertilizer pipe 10 and the discharge pipe 13. After the fertilization is completed, the sealing plate 14 closes, the electric telescopic rod 11 is lifted, the soil separating plate 15 is withdrawn, and the soil on the hole wall naturally falls back to complete the coverage, with no surface spillage throughout the process.

[0027] The “7”-shaped fertilizer pipe 10 in this scheme transforms horizontal fertilizer delivery into vertical soil entry, reducing bend blockage; the discharge pipe 13 is slidably fitted with the fertilizer pipe 10, and the insertion depth is precisely controlled by the electric telescopic rod 11, adapting to the 10-30 cm root layer requirements of blueberries; the split-type sealing plate 14 serves as both a “valve” and a “ditch opener”, with an adjustable opening degree to achieve synchronous matching of fertilizer amount and pit volume, and when closed, it cuts off the fertilizer flow and prevents soil backflow from blocking the pipe opening.

[0028] The soil-separating insert 15 forms a cavity upon insertion into the soil, allowing fertilizer to be directly injected into the moist root zone; the three actions of insertion, fertilization, and lifting are completed in a continuous manner, shortening the operation time per hole and significantly improving the stability and efficiency of deep application of acidic fertilizers.

[0029] In a further preferred embodiment of the present invention, a scraper 16 and multiple stirring rods 17 are fixedly installed on the stirring shaft 8. The scraper 16 and multiple stirring rods 17 are both located inside the tank 2, and the scraper 16 is in contact with the inner wall of the tank 2 for scraping off impurities when rotating.

[0030] In this embodiment, when the stirring shaft 8 rotates, the scraper 16 scrapes the inner wall of the tank 2 in a circular motion, simultaneously driving multiple stirring rods 17 to mix the fertilizer radially and axially. Acidic or high-moisture ammonium sulfate and organic compound fertilizers are prone to clumping and forming clumps on the tank walls. The scraper 16 continuously peels off the adhering layer, keeping the fertilizer in a loose and flowing state. It also moves down quantitatively with the discharge auger 9, achieving continuous and uninterrupted feeding.

[0031] The scraper 16 and the stirring rod 17 are coaxially fixed to form a dual-action zone of "wall scraping + internal turning" to prevent acidic fertilizer from forming a hard layer on the inner wall of the tank 2 after absorbing moisture. The outer edge of the scraper 16 is in line with the inner wall, and the contact pressure is provided by the torque of the stirring shaft 8. The stirring rod 17 is arranged in a spatially staggered manner, which can push the loose material in the center to the wall and then bring it back into the mixing zone by the scraper 16 to achieve full-cavity circulation homogenization.

[0032] In a further preferred embodiment of the present invention, a motor 18 is fixedly installed on the top of the tank 2, a bevel gear 19 is fixedly installed on the output shaft of the motor 18, and a bevel gear disk 20 is fixedly installed on the top of the stirring shaft 8 outside the tank 2. The bevel gear disk 20 meshes with the bevel gear 19 so that the motor 18 drives the stirring shaft 8 to rotate.

[0033] In this embodiment, after the motor 18 starts, the bevel gear 19 drives the bevel gear disc 20 to rotate, changing the horizontal output to vertical drive, and the stirring shaft 8 rotates accordingly; the scraper 16 and the stirring rod 17 work synchronously to turn over the acidic fertilizer in the tank 2 and scrape off the clumps on the wall, keeping the fertilizer loose, and then the discharge auger 9 discharges it in a quantitative manner to achieve continuous feeding.

[0034] In a further preferred embodiment of the present invention, a handrail 21 is fixedly installed on the top of the support 1 for hand-holding operation, and a controller 22 is fixedly installed on the handrail 21.

[0035] In this embodiment, the operator holds the handrail 21 to push the whole machine forward. During the journey, the operator starts and stops the motor 18 and the electric telescopic rod 3 in real time via the controller 22: first, the support 1 is raised with one key so that the walking wheel 5 is off the ground, then the drilling and fertilization program is triggered. After the single hole is fertilized, the lifting command is released, the machine falls back and moves to the next plant, realizing continuous operation of "walking and controlling at the same time".

[0036] In a further preferred embodiment of the present invention, a lifting frame 23 is fixedly installed on the top of the support 1, and a battery 24 is installed on the lifting frame 23. The battery 24 is connected to the controller 22.

[0037] In this embodiment, the battery 24 is mounted on the mounting bracket 23 and connected to the controller 22 via quick-connect terminals.

[0038] In a further preferred embodiment of the present invention, a rectangular guide opening 25 is provided on the sealing plate 14, and a rectangular guide strip 26 is slidably provided in the rectangular guide opening 25. Both ends of the rectangular guide strip 26 extend to the outside of the sealing plate 14 and are respectively fixedly installed with connecting plates 27. Both connecting plates 27 are fixedly connected to the bottom of the discharge pipe 13 and are used for guiding when the sealing plate 14 is opened and closed.

[0039] In this embodiment, when the discharge pipe 13 performs the opening and closing action, the sealing plate 14 slides back and forth along the rectangular guide bar 26; the two ends of the rectangular guide bar 26 are fixed to the discharge pipe 13 through the connecting plate 27 to form a double-sided cantilever guide rail, so that the sealing plate 14 always maintains a horizontal posture, avoids deflection and jamming, and ensures that the acidic fertilizer is released instantly and then quickly closes to complete precise fertilization.

[0040] In a further preferred embodiment of the present invention, guide posts 28 are fixedly installed on both sides of the discharge pipe 13. Synchronous buckles 29 are slidably sleeved on both guide posts 28. The two synchronous buckles 29 are fixedly connected to the two sealing plates 14 respectively, and are used to guide the sealing plates 14 when they slide. Limiting plates 30 are fixedly installed on the ends of the two guide posts 28 away from the discharge pipe 13. Springs 31 are slidably sleeved on both guide posts 28. The two ends of the springs 31 abut against the synchronous buckles 29 and the limiting plates 30 respectively, so that the springs 31 are compressed when the sealing plates 14 and the synchronous buckles 29 slide open. A winding drum 32 is fixedly rotatably sleeved on the discharge pipe 13. Pull wires 33 are slidably installed through the two limiting plates 30. The two ends of the pull wires 33 are fixedly connected to the winding drum 32 and the sealing plates 14 respectively, so that the winding drum 32 controls the opening and closing of the sealing plates 14 in conjunction with the springs 31 when winding and unwinding the pull wires 33.

[0041] In this embodiment, the opening and closing mechanism of the sealing plate 14 has a symmetrical double guide rail layout: a horizontal guide post 28 is fixed on each of the outer walls of the discharge pipe 13. A synchronous buckle plate 29, a spring 31, and a limiting plate 30 are sequentially fitted on the guide post 28. The limiting plate 30 is rigidly connected to the guide post 28, and the synchronous buckle plate 29 is rigidly connected to the corresponding sealing plate 14 to form a movable slider. One end of the pull wire 33 is tied to the outside of the sealing plate 14, and the other end passes through the wire hole of the limiting plate 30 and is wound upwards around the winding drum 32. When the winding drum 32 rotates in the forward direction, the pull wire 33 is tightened, the synchronous buckle plate 29 moves outward along the guide post 28 and compresses the spring 31, the sealing plate 14 opens accordingly, the lower end of the discharge pipe 13 opens, and the fertilizer instantly falls into the cavity pre-formed by the soil dividing plate 15. After fertilizer application, the winding drum 32 rotates in the opposite direction, the pull wire 33 relaxes, the spring 31 releases its potential energy, pushing the synchronous buckle plate 29 inward, and the sealing plate 14 quickly closes, cutting off the fertilizer flow. The rectangular guide port 25 and the rectangular guide bar 26 provide secondary guidance on the front side, ensuring that the two sealing plates 14 always slide synchronously in the same plane without deviation or jamming; the surface of the guide post 28 is treated with friction reduction, so that the pull wire 33 experiences less wear during long-term operation.

[0042] In a further preferred embodiment of the present invention, the bottom of the tank 2 has a discharge port, the diameter of which is the same as the inner diameter of the distributing cylinder 7, and the gap between the inner wall of the discharge port and the discharge auger 9 is 3-5 mm.

[0043] In this embodiment, the bottom discharge port of the tank 2 is connected to the distribution cylinder 7 with the same diameter, and the outer edge of the discharge auger 9 maintains a 3-5 mm annular gap with the inner wall of the discharge port; when the auger rotates, this annular gap forms a uniform shearing slit, and the acidic or organic compound fertilizer is continuously peeled off and pushed to the distribution cylinder 7, so as to achieve full discharge without residue.

[0044] A 3-5 mm gap prevents direct friction between the auger and the tank body, and also avoids excessive gaps that could cause fertilizer to flow out on its own; the same diameter joint eliminates steps, prevents wet fertilizer from sticking to the wall and bridging, and ensures smooth discharge.

[0045] In a further preferred embodiment of the present invention, one side of the bottom of the soil dividing plate 15 is a slope. When two corresponding soil dividing plates 15 are attached, the slope is located on opposite sides of the two soil dividing plates 15, and the bottoms together form a cone to break the soil.

[0046] In this embodiment, the soil for blueberry planting is relatively loose and has good air and water permeability. When the two soil insert plates 15 are closed, their outer slopes are combined to form a complete cone. The electric telescopic rod 11 is pushed down, and the cone first pierces the ground surface. Then the sealing plate 14 opens, and the slope continues to squeeze the soil outward and downward, quickly forming a cavity. The discharge pipe 13 can then be aligned with the bottom of the cavity to add fertilizer.

[0047] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments: In another embodiment of the present invention, a ring of teeth 34 is fixedly installed on the outer ring of the winding drum 32. The teeth 34 are located above the pull wire 33. A drive shaft 36 is rotatably installed on the lifting plate 12. A drive wheel 37 is fixedly installed at the bottom end of the drive shaft 36, and a rectangular shaft 38 is fixedly installed at the top end. The drive wheel 37 meshes with the teeth 34 to drive the winding drum 32 to rotate. A bearing seat 39 is fixedly installed on the fertilizer pipe 10. A rectangular cylinder 40 is rotatably installed on the bearing seat 39. The rectangular cylinder 40 is slidably sleeved on the rectangular shaft 38. The rectangular cylinder 40 drives the drive shaft 36 to rotate to adapt to the transmission of the drive shaft 36 when the discharge pipe 13 extends or retracts.

[0048] In this embodiment, when the discharge pipe 13 is raised or lowered, the rectangular shaft 38 slides along the rectangular cylinder 40 to maintain angular transmission; the external power drives the rectangular cylinder 40 to rotate, and drives the drive wheel 37 through the rectangular shaft 38 and the transmission shaft 36 to mesh with the teeth 34 of the outer ring of the winding drum 32, so that the winding drum 32 can retract and release the pull wire 33, thereby controlling the opening and closing of the sealing plate 14.

[0049] The rectangular shaft 38 and the rectangular tube 40 form a telescopic spline pair, which transmits torque and allows axial sliding, ensuring that the power of the discharge pipe 13 is not interrupted when it freely rises and falls within the stroke range of the electric telescopic rod 11; the drive wheel 37 meshes with the teeth 34 to ensure transmission.

[0050] In another embodiment of the present invention, a conical gear disc 41 is fixedly sleeved on each of the two rectangular cylinders 40, and a bearing seat 42 is fixedly installed on each of the two fertilizer pipes 10. A long shaft 43 is rotatably mounted on each of the bearing seats 42 on the two fertilizer pipes 10. A conical gear 44 and a conical gear 45 are fixedly installed at both ends of each of the two long shafts 43. The conical gear 44 meshes with the conical gear disc 41, so that the long shaft 43 drives the rectangular cylinders 40 to rotate. The material distribution cylinder 7 is rotatably sleeved on the outside. A conical gear disk 46 is provided, which meshes with a conical gear 45 to drive two long shafts 43 to rotate synchronously, thereby synchronously controlling the opening and closing of two discharge pipes 13. A motor 47 is provided on one side of the conical gear disk 46 and is fixedly connected to the hoisting frame 23. An output conical gear 48 is fixedly installed on the output shaft of the motor 47, which meshes with the conical gear disk 46 to drive the conical gear disk 46 to rotate.

[0051] In this embodiment, motor 2 47 is fixed to the hoisting frame 23, and the output bevel gear 48 on its output shaft meshes with bevel gear disk 3 46; bevel gear disk 3 46 is loosely fitted on the outer ring of the distributing cylinder 7, forming a central rotating body. Bevel gear disk 3 46 simultaneously meshes with bevel gear 3 45 at the ends of the left and right long shafts 43, and the long shafts 43 are supported on the outer wall of the corresponding fertilizer pipe 10 through bearing seat 2 42, and can rotate around their own axis. The other end of each long shaft 43 is equipped with bevel gear 2 44, which meshes with bevel gear disk 2 41 fixed on the outer ring of rectangular cylinder 40; rectangular cylinder 40 is splined with rectangular shaft 38 and rotatably mounted on the side wall of fertilizer pipe 10 through bearing seat 1 39, so it can rise and fall together with discharge pipe 13 while receiving torque.

[0052] When motor 2 47 is energized and rotates, the output bevel gear 48 drives bevel gear disk 3 46 to rotate. The two long shafts 43 rotate synchronously under the drive of bevel gear 3 45. Then, through the cascade transmission of bevel gear 2 44, bevel gear disk 2 41, rectangular cylinder 40, rectangular shaft 38, transmission shaft 36, drive wheel 37, and teeth 34, the winding drums 32 on both sides are synchronously winding and unwinding the pull wire 33. The winding and unwinding of the pull wire 33 overcomes or releases the elastic force of the spring 31, pushing the synchronous buckle plate 29 to slide along the guide post 28, and finally realizing the opening and closing of the two sealing tube plates 14 at the same speed and distance.

[0053] The "one-drive, two-shaft" bevel gear series structure can ensure that the sealing plate 14 at the bottom of the double-sided discharge pipe 13 remains in phase at any lifting position using only a single motor 47; the telescopic spline pair formed by the rectangular cylinder 40 and the rectangular shaft 38 allows the rotational motion of the long shaft 43 to be smoothly transmitted to the drive wheel 37 that slides up and down with the discharge pipe 13, ensuring uninterrupted power and no misalignment; the overall linkage response is rapid and the action is coordinated, and the sealing plate 14 can be closed immediately after the fertilizer is added.

[0054] In another embodiment of the present invention, a separating cone 49 is fixedly installed on the bottom inner wall of the distributing cylinder 7. The separating cone 49 is located below the stirring shaft 8. Distributing blocks 50 are fixedly installed on both sides of the separating cone 49 and on the inner wall of the distributing cylinder 7 to guide the fertilizer to the inlet position of the two fertilizer pipes 10.

[0055] In this embodiment, after the discharge auger 9 presses the fertilizer into the distribution cylinder 7, it first falls onto the top of the separation cone 49, and the cone surface evenly disperses the fertilizer in all directions; the two side distribution blocks 50 receive the falling material flow and guide it tangentially into the inlet of the corresponding fertilizer pipe 10, realizing a smooth transition from single-sided feeding to double-sided discharge.

[0056] The separating cone 49 eliminates the concentrated impact when fertilizer falls, and the dividing block 50 forms a symmetrical flow channel with the cone surface to ensure that the feed amount of the two fertilizer pipes 10 is basically equal; the whole structure is a non-powered structure, which does not require additional drive and simplifies control.

[0057] In another embodiment of the present invention, the bottom of the distributing cylinder 7 and the separating cone 49 are provided with air inlets 51. The separating cone 49 is provided with blowing holes 52 on both sides of the two fertilizer pipes 10. Both blowing holes 52 are connected to the air inlets 51, and are respectively positioned corresponding to the inlets of the two fertilizer pipes 10. A cylinder shell 53 is fixedly installed at the bottom of the distributing cylinder 7. An air inlet 54 is provided at the bottom of the cylinder shell 53, and an exhaust pipe 55 is fixedly installed at the top. The top end of the exhaust pipe 55 is fixedly connected to the bottom of the distributing cylinder 7, and the exhaust pipe 55 is connected to the air inlets 51. A fan shaft 56 is rotatably installed inside the cylinder shell 53. The portion of the fan shaft 56 located inside the shell 53 has fan blades. Both ends of the fan shaft 56 extend outside the shell 53. A fixed plate 57 is fixedly installed on the top of the tank body 2. A driven shaft 58 is rotatably installed on the fixed plate 57. The driven shaft 58 is arranged parallel to the fan shaft 56. A bevel gear 4 59 is fixedly installed at one end of the driven shaft 58 located on the stirring shaft 8. The bevel gear 4 59 meshes with a bevel gear disc 20 so that the stirring shaft 8 drives the driven shaft 58 to rotate synchronously. Pulleys 60 are fixedly installed on both the driven shaft 58 and the fan shaft 56. The same synchronous belt 61 is fitted on the two pulleys 60 so that the driven shaft 58 and the fan shaft 56 rotate synchronously.

[0058] In this embodiment, the separating cone 49 is fixed at the center of the bottom of the distributing cylinder 7, and its inner cavity and the bottom wall of the distributing cylinder 7 share an air inlet 51; each side of the cone is provided with a blowing hole 52, and the outlet is directly opposite the inlet of the corresponding fertilizer pipe 10. The cylinder shell 53 is fixed to the bottom of the distributing cylinder 7, and the fan shaft 56 is rotatably supported inside it. The fan shaft 56 is equipped with fan blades; the bottom surface of the cylinder shell 53 is provided with an air inlet 54, and the top surface is connected to the air inlet 51 through an exhaust pipe 55. The top of the stirring shaft 8 has a conical toothed disc 20 that meshes with a bevel gear 59, driving the driven shaft 58 to rotate; the driven shaft 58 and the fan shaft 56 are arranged in parallel, and each of them has a pulley 60 at its outer end, which is connected by a synchronous belt 61. When the stirring shaft 8 rotates, the driven shaft 58 rotates synchronously, driving the fan shaft 56 to rotate via the pulley 60 and the synchronous belt 61. The fan blades generate positive pressure airflow inside the cylinder shell 53. The airflow enters the inner cavity of the separation cone 49 through the air inlet 54, exhaust pipe 55, and air inlet hole 51 in sequence, and is then sprayed out at high speed obliquely downward through the two side blowing holes 52. A directional air curtain is formed the instant the fertilizer particles leave the cone surface, pushing the material into the corresponding fertilizer pipe inlet 10, realizing pneumatic assisted feeding. The fan shaft speed increases or decreases synchronously with the stirring shaft, and the air volume automatically matches the discharge volume, with no additional electrical control components throughout the process.

[0059] The linkage air conveying system utilizes the existing power of the stirring shaft to drive the fan shaft 56 through a two-stage transmission of bevel gears and belts, forming a continuous positive pressure inside the separation cone 49 to prevent acidic wet fertilizer from adhering or arching on the cone surface and at the inlet of the fertilizer pipe; the air pressure of the two blowing holes 52 is equal, ensuring that the feeding of the two fertilizer pipes 10 is synchronized, eliminating the phenomenon of unilateral fertilizer deficiency caused by blockage.

[0060] In summary, compared with related technologies, this device features a symmetrically arranged soil-inserting fertilization mechanism on both sides of the dispensing cylinder 7, enabling precise injection of fertilizer into the root zone of two rows of blueberries in a single pass. This doubles the efficiency compared to the traditional "single-point-by-hole" method. The device significantly reduces labor intensity and improves fertilization efficiency and fertilizer utilization. It is particularly suitable for the precise deep application of acidic fertilizers and organic-inorganic compound fertilizers in blueberry cultivation.

[0061] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A fertilization device for blueberry cultivation, characterized in that, include: A support and a tank body, wherein the tank body is fixedly mounted on the support; Each of the four corners of the support is fixedly installed with an electric telescopic rod, and each of the four corners is slidably installed with a support leg. The four support legs are respectively fixedly connected to the output rods of the four electric telescopic rods, so that the electric telescopic rods control the extension and retraction of the support legs. Each of the four support legs is rotatably installed with a walking wheel, so that the device can move as a whole. The top of the tank is equipped with a feeding hopper for feeding, and the bottom is equipped with a distributing cylinder, which is connected to the tank and used to collect the fertilizer discharged from the tank. A stirring shaft is rotatably installed inside the tank. The bottom end of the stirring shaft extends into the distribution cylinder. A discharge auger is fixedly installed on the bottom part of the stirring shaft. The discharge auger is located inside the distribution cylinder and the bottom of the tank, so that when the stirring shaft and the discharge auger rotate, the fertilizer in the tank is evenly discharged into the distribution cylinder. Both sides of the dispensing cylinder are equipped with soil-inserting fertilization mechanisms, which are used to apply fertilizer to the soil around the plants on both sides of the walking area.

2. The fertilization device for blueberry cultivation as described in claim 1, characterized in that, The soil-inserting fertilization mechanism includes a fertilization pipe fixedly installed on the side of the distributing cylinder. The fertilization pipe is inclined downwards, with the discharge end pointing downwards and vertically towards the ground, forming an overall "7" shape. It is used to discharge fertilizer from the distributing cylinder. An electric telescopic rod is fixedly installed on the side of the fertilization pipe, and the electric telescopic rod is parallel to the discharge end of the fertilization pipe. A lifting plate is fixedly installed on the output rod of the electric telescopic rod, which is located directly below the discharge end of the fertilization pipe. A discharge pipe is fixedly installed through the lifting plate and is slidably sleeved outside the discharge end of the fertilization pipe to adjust the distance from the ground. Two split sealing plates are slidably installed at the bottom of the discharge pipe. When the two sealing plates are closed, they seal the bottom of the discharge pipe. When they are open, they allow fertilizer to be discharged from the discharge pipe. Soil-separating inserts are fixedly installed at the bottom of each of the two sealing plates. These inserts move with the sealing plates and are used to insert into the soil. When they separate, they create a pit in the soil so that the fertilizer discharged from the discharge pipe can enter.

3. The fertilization device for blueberry cultivation as described in claim 1, characterized in that, A scraper and multiple stirring rods are fixedly installed on the stirring shaft. The scraper and multiple stirring rods are located inside the tank, and the scraper is in contact with the inner wall of the tank for scraping off impurities when rotating.

4. The fertilization device for blueberry cultivation as described in claim 1, characterized in that, A motor is fixedly installed on the top of the tank. A bevel gear is fixedly installed on the output shaft of the motor. The top of the stirring shaft is located outside the tank and a bevel gear is fixedly installed thereon. The bevel gear meshes with the bevel gear to drive the stirring shaft to rotate.

5. The fertilization device for blueberry cultivation as described in claim 1, characterized in that, A handrail is fixedly installed on the top of the support for hand operation, and a controller is fixedly installed on the handrail.

6. The fertilization device for blueberry cultivation as described in claim 5, characterized in that, A lifting frame is fixedly installed on the top of the support, and a battery is installed on the lifting frame. The battery is connected to the controller.

7. The fertilization device for blueberry cultivation as described in claim 2, characterized in that, The sealing plate has a rectangular guide opening, and a rectangular guide strip is slidably arranged inside the rectangular guide opening. Both ends of the rectangular guide strip extend to the outside of the sealing plate and are respectively fixedly installed with connecting plates. Both connecting plates are fixedly connected to the bottom of the discharge pipe and are used for guiding when the sealing plate is opened and closed.

8. The fertilization device for blueberry cultivation as described in claim 2, characterized in that, Guide posts are fixedly installed on both sides of the discharge pipe. Synchronous buckles are slidably fitted on both guide posts. The two synchronous buckles are fixedly connected to the two sealing plates respectively and are used to guide the sealing plates when they slide. Limiting plates are fixedly installed on the ends of the two guide posts away from the discharge pipe. Springs are slidably fitted on both guide posts. The two ends of the springs abut against the synchronous buckles and the limiting plates respectively, so that the springs are compressed when the sealing plates and synchronous buckles slide open. A winding drum is fixedly rotatably fitted on the discharge pipe. Pull wires are slidably installed through the two limiting plates. The two ends of the pull wires are fixedly connected to the winding drum and the sealing plates respectively, so that the opening and closing of the sealing plates are controlled by the springs when the winding drum retracts and extends the pull wires.

9. The fertilization device for blueberry cultivation as described in claim 1, characterized in that, The bottom of the tank has a discharge port with the same diameter as the inner diameter of the distribution cylinder. The gap between the inner wall of the discharge port and the discharge auger is 3-5 mm.

10. The fertilization device for blueberry cultivation as described in claim 2, characterized in that, The bottom side of the soil dividing plate is a slope. When two corresponding soil dividing plates are attached, the slope is located on opposite sides of the two soil dividing plates, and the bottom together form a cone to break the soil.

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