Precise fertilization device and method based on rotary indexing

Abstract

The invention is applicable to the technical field of agricultural machinery and intelligent irrigation equipment, and provides a precise fertilization device based on rotary indexing, the precise fertilization device comprises a mixing box used for mixing a plurality of fertilizer solutions, a support is fixedly mounted on the mixing box, a rotary table is arranged at the top of the support, and the rotary table is provided with a rotary shaft; a plurality of fertilizer storage tanks for storing a fertilizer solution are arranged on the turntable, a discharge pipe is fixedly mounted at the bottom of each fertilizer storage tank, and a discharge port is formed in the bottom of each discharge pipe; and the feeding pipe is arranged on the mixing box, and the fertilizer solution discharged from the discharging opening enters the mixing box through the feeding pipe. According to the precise fertilization device and method based on rotary indexing, precise fertilization can be achieved, the structure is relatively simple, cost is reduced, fault points are reduced, maintenance is convenient, and actual use requirements are better met.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery and intelligent irrigation equipment technology, and in particular to a precision fertilization device and method based on rotational indexing. Background Technology

[0002] Currently, fertigation equipment in facility agriculture generally uses either "Venturi tube suction" or "fertilizer injection pump (such as diaphragm pump or piston pump)" in the fertilizer mixing and absorption stage. Although the technology is relatively mature, existing technologies have the following significant problems and drawbacks in practical applications: Limitations of the traditional AB tank fertilizer mixing method: Traditional Venturi fertilizer suction or injection pump systems typically pre-mix all fertilizers in two mother liquor tanks, A and B. This method has a fixed ratio and cannot adjust the proportions of nitrogen, phosphorus, potassium, and micronutrients in real time according to the crop growth cycle (seedling stage, flowering stage, fruiting stage); Complex structure and high cost: Existing multi-channel fertilizer blending machines typically adopt a parallel structure of "one fertilizer, one pump". For example, if six different mother liquors need to be blended, six independent fertilizer pumps, as well as complex solenoid valve groups and pipelines, are required. This not only results in large equipment size and high cost, but also many points of failure and difficult maintenance. Summary of the Invention

[0003] To address the technical problem mentioned in the background art that existing fertilization devices cannot better meet actual usage needs, this invention provides a precision fertilization device and method based on rotational indexing.

[0004] The precision fertilization device based on rotational graduation provided by the present invention includes: a mixing tank for mixing multiple fertilizer solutions, a support fixedly installed on the mixing tank, a turntable on the top of the support, multiple fertilizer storage tanks for storing fertilizer solutions on the turntable, a discharge pipe fixedly installed at the bottom of the fertilizer storage tank, and a discharge port at the bottom of the discharge pipe; a feed pipe installed on the mixing tank, through which the fertilizer solution discharged from the discharge port enters the mixing tank; a rotation mechanism assembled on the support and the turntable, the rotation mechanism being used to adjust the discharge port on the fertilizer storage tank to be above the feed pipe for discharging; and a control mechanism assembled on the feed pipe and the discharge port, the control mechanism being used to control the opening and closing of the discharge port.

[0005] Preferably, the rotating mechanism includes: a first servo motor fixedly mounted on the bracket; and a mounting shaft rotatably mounted on the bracket, the top end of the mounting shaft being fixedly connected to the bottom of the turntable, and the output shaft of the first servo motor being connected to the bottom end of the mounting shaft via a coupling.

[0006] Preferably, the control mechanism includes: a mounting plate disposed within the discharge pipe; a spring assembled within the discharge pipe, the bottom end of the spring being fixedly connected to the top of the mounting plate, and a telescopic protective sleeve for protecting the spring being disposed within the spring, the bottom end of the telescopic protective sleeve being fixedly connected to the top of the mounting plate, and the top end of the telescopic protective sleeve being connected to the discharge port at the bottom of the fertilizer storage tank; a blocking block fixedly installed at the bottom of the mounting plate, the blocking block being adapted to the discharge port, and the blocking block being used to seal the discharge port; and multiple discharge holes formed on the mounting plate, the multiple discharge holes being arranged in a ring on the mounting plate. The system comprises: a plate; multiple plugs fixedly installed on the inner wall of the bottom of the discharge pipe, each plug being adapted and connected to a plurality of discharge holes, the plugs being used to block the discharge holes; an electric telescopic rod fixedly installed on the outer wall of the feed pipe, a connecting plate being fixedly installed on the output shaft of the electric telescopic rod; a shield disposed inside the feed pipe, the outer wall of the shield being fixedly connected to one end of the connecting plate; and a first push rod fixedly installed inside the shield, the first push rod being used to push the plugs upward to disengage from the discharge port, and simultaneously push the mounting plate to move the discharge hole upward, thereby disengaging the discharge hole from the plugs.

[0007] Preferably, the mixing chamber is provided with a mixing mechanism for mixing multiple fertilizer solutions within the mixing chamber. The mixing mechanism includes: a second servo motor fixedly installed at the bottom of the mixing chamber; a mixing frame rotatably installed within the mixing chamber, the output shaft of the second servo motor being connected to the bottom end of the mixing frame via a coupling; a mounting shell fixedly installed within the mixing chamber, with the mixing frame and the mounting shell rotatably connected; two augers symmetrically rotatably installed on the mounting shell; and three bevel gears respectively fixedly sleeved on the two augers and the mixing frame, wherein the two bevel gears fixedly sleeved on the two augers mesh with the bevel gear fixedly sleeved on the mixing frame.

[0008] Preferably, the mixing tank is equipped with a cleaning mechanism for cleaning the fertilizer storage tank. The cleaning mechanism includes: a water inlet frame mounted on the mixing tank, which sprays cleaning water into the discharge port to clean the fertilizer storage tank. A second push rod is fixedly installed inside the water inlet frame. The second push rod pushes the plug upward to disengage from the discharge port and simultaneously pushes the mounting plate to move the discharge hole upward, thus disengaging the discharge hole from the plug. A water inlet pipe is connected to the water inlet frame for guiding cleaning water into the water inlet frame. A drain pipe is mounted on the water inlet frame for discharging wastewater used for cleaning the fertilizer storage tank. A solenoid valve is installed on the drain pipe.

[0009] Preferably, the top of the fertilizer storage tank is provided with a discharge pipe for discharging fertilizer solution into the storage tank. A mounting frame is fixedly installed on one side of the mixing tank, and a cover is provided on one side of the mounting frame for sealing the top of the discharge pipe. A moving mechanism is mounted on the water inlet frame and the cover for moving the water inlet frame and the second push rod relative to the cover. The lowered cover seals the top of the discharge pipe, and the uppered water inlet frame connects with the discharge port. The uppered second push rod pushes the plug block upward to disengage from the discharge port and simultaneously pushes the mounting plate to move the discharge hole upward, thus disengaging the discharge hole from the plug block.

[0010] Preferably, the moving mechanism includes: a dual-axis motor fixedly mounted on the mounting frame; two lead screws rotatably mounted on the mounting frame, the two output shafts of the dual-axis motor being connected to one end of the two lead screws respectively via couplings; and two horizontal plates threaded onto the two lead screws respectively, the two horizontal plates being fixedly connected to the baffle and the water inlet frame respectively.

[0011] Preferably, a retaining ring is fixedly installed at the top of the water inlet frame, and an annular groove is opened at the bottom of the discharge pipe, with the retaining ring and the groove being adapted to each other.

[0012] Preferably, a sliding rod is fixedly installed on the top of the mixing tank, and a slider is fixedly installed on the outer wall of the water inlet frame. The slider and the sliding rod are slidably connected. The fertilizer storage tank includes an inner liner, a buffer layer, and a stainless steel outer shell. The buffer layer is disposed inside the stainless steel outer shell, and the inner liner is disposed inside the buffer layer.

[0013] This invention also proposes a method for a precision fertilization device based on rotational indexing, comprising: S1: Different fertilizer storage tanks contain different fertilizer solutions. When multiple fertilizer solutions need to be mixed and used, the controller starts the rotating mechanism, which adjusts the discharge port on the corresponding fertilizer storage tank to the top of the feed pipe. S2: After adjustment, the controller starts the control mechanism to open the discharge port. Then the fertilizer solution in the storage tank is discharged through the discharge port below and enters the mixing tank through the feed pipe. Based on time-based constant flow titration, the flow rate = constant flow rate × time. After the discharge port has been open for a certain period of time, the controller starts the control mechanism to block the discharge port, thereby stopping the feeding. S3: After the fertilizer solution in one fertilizer storage tank 4 is added, the fertilizer solution in other fertilizer storage tanks is added to the mixing tank in the same way as above, so that multiple fertilizer solutions are added to the mixing tank for mixing and fertilization.

[0014] Compared with related technologies, the precision fertilization device and method based on rotational indexing provided by the present invention have the following beneficial effects: This invention provides a precision fertilization device and method based on rotational indexing: it can achieve precise fertilization, has a relatively simple structure, reduces costs, reduces failure points, is easy to maintain, and better meets actual use needs. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of a preferred embodiment of the precision fertilization device based on rotational indexing provided by the present invention. Figure 2 This is a schematic diagram of the front sectional view of the present invention; Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure; Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure; Figure 5 for Figure 2 An enlarged structural diagram of section C shown in the figure; Figure 6 for Figure 2 An enlarged structural diagram of part D shown in the figure; Figure 7 for Figure 2 An enlarged structural diagram of part E shown in the figure; Figure 8 for Figure 2 An enlarged structural diagram of part F shown in the figure; Figure 9 for Figure 1 An enlarged structural diagram of part G shown in the figure; Figure 10 for Figure 3 An enlarged structural diagram of section H shown in the figure; Figure 11 This is a schematic diagram of the structure of the turntable, fertilizer storage tank, feed pipe and discharge pipe in this invention.

[0016] Labels in the diagram: 1. Mixing tank; 2. Support frame; 3. Turntable; 4. Fertilizer storage tank; 4011. Discharge pipe; 4012. Circumvention port; 401. Inner liner; 402. Buffer layer; 403. Stainless steel outer shell; 5. Discharge port; 6. Feed pipe; 7. First servo motor; 8. Mounting shaft; 9. Mounting plate; 10. Spring; 11. Telescopic protective sleeve; 12. Block; 13. Discharge hole; 14. Plug; 15. Electric telescopic rod; 16. Connecting plate; 17. Shield; 18. First top 19. Second servo motor; 20. Mixing frame; 21. Mounting shell; 22. Screw; 23. Bevel gear; 24. Water inlet frame; 25. Water inlet pipe; 26. Drain pipe; 27. Second top rod; 28. Feed pipe; 29. ​​Cover; 30. Mounting frame; 31. Dual-axis motor; 32. Lead screw; 33. Horizontal plate; 34. Snap ring; 35. Snap groove; 37. Slider; 38. Slide rod; 39. Mounting rod; 40. Photoelectric sensor transmitter body; 41. Photoelectric sensor receiver body. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification and the foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification or the foregoing drawings of this application are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[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 precision fertilization device and method based on rotational indexing, such as... Figure 1-11As shown, the precision fertilization device based on rotational indexing includes: a mixing tank 1 for mixing multiple fertilizer solutions, a support 2 fixedly mounted on the mixing tank 1, a turntable 3 on the top of the support 2, multiple fertilizer storage tanks 4 for storing fertilizer solutions on the turntable 3, a discharge pipe 4011 fixedly mounted at the bottom of the fertilizer storage tank 4, and a discharge port 5 at the bottom of the discharge pipe 4011; a feed pipe 6 mounted on the mixing tank 1, through which the fertilizer solution discharged from the discharge port 5 enters the mixing tank 1; a rotation mechanism mounted on the support 2 and the turntable 3, the rotation mechanism being used to adjust the discharge port 5 on the fertilizer storage tank 4 to be above the feed pipe 6 for discharging; and a control mechanism mounted on the feed pipe 6 and the discharge port 5, the control mechanism being used to control the opening and closing of the discharge port 5.

[0020] In this embodiment, a SIMATIC S7-1500 controller is installed on one side of the device. The controller controls the entire device. The controller's working principle is existing technology and will not be elaborated here. Different fertilizer storage tanks 4 contain different fertilizer solutions. When multiple fertilizer solutions need to be mixed, the controller activates a rotating mechanism to adjust the discharge port 5 on the corresponding fertilizer storage tank 4 above the inlet pipe 6. After adjustment, the controller activates a control mechanism to open the discharge port 5. The fertilizer solution in the storage tank 4 is then discharged through the discharge port 5 below and enters the mixing tank 1 through the inlet pipe 6. For time-based constant flow titration, the flow rate = constant flow rate × time. After the discharge port 5 has been open for a certain period, the controller... The control mechanism is activated to seal the discharge port 5, thereby stopping further material feeding and allowing for precise application of the fertilizer solution. Similarly, fertilizer solutions from other storage tanks 4 are added to the mixing tank 1 in the same manner, allowing for the mixing of multiple fertilizer solutions. During mixing, different fertilizer solutions from storage tanks 4 can be selectively added according to actual needs to adjust the proportions of nitrogen, phosphorus, potassium, and trace elements. Simultaneously, the mixing tank 1 is connected to a fertilizer injection pump, which injects the prepared fertilizer solution from the mixing tank 1 into the corresponding fertilization pipeline, completing the fertilization operation. This comprehensive fertilizer solution preparation and application operation overcomes the limitations of traditional Venturi suction or fertilizer injection pump systems that pre-mix all fertilizers in tanks A and B. The fixed ratio in the two mother liquor tanks makes it impossible to adjust the proportions of nitrogen, phosphorus, potassium, and trace elements in real time according to the crop growth cycle. This device can store different fertilizers in multiple fertilizer storage tanks 4, and flexibly adjust the fertilizer ratio according to actual needs to meet the needs of different crop growth stages. At the same time, it changes the existing parallel structure of "one fertilizer, one pump", avoiding the problems of needing to configure multiple independent fertilizer pumps and complex solenoid valve groups and pipelines to prepare multiple mother liquors, resulting in large equipment size, high cost, many failure points, and difficult maintenance. With this device, precise fertilization can be achieved, the structure is relatively simple, the cost is reduced, the failure points are reduced, maintenance is convenient, and it better meets the actual use needs.

[0021] In a further preferred embodiment of the present invention, the rotating mechanism includes: a first servo motor 7 fixedly mounted on the bracket 2; and a mounting shaft 8 rotatably mounted on the bracket 2, wherein the top end of the mounting shaft 8 is fixedly connected to the bottom end of the turntable 3, and the output shaft of the first servo motor 7 is connected to the bottom end of the mounting shaft 8 through a coupling.

[0022] In this embodiment, when using the rotating mechanism, the first servo motor 7 is started by the controller to rotate at a certain angle. When the first servo motor 7 is started, the rotation of the output shaft of the first servo motor 7 is transmitted to the mounting shaft 8 through the coupling, thereby driving the turntable 3 to rotate. This allows the discharge port 5 on the corresponding fertilizer storage tank 4 to be adjusted above the feed pipe 6 for discharge. Combined with the control mechanism mounted on the feed pipe 6 and the discharge port 5, the opening and closing of the discharge port 5 is controlled, so that multiple fertilizer solutions can be mixed in the mixing box 1 as needed. This makes it easy to adjust the proportion of nitrogen, phosphorus, potassium and trace elements according to actual needs, to meet the needs of different growth stages of crops. It is more flexible to use. In addition, multiple support blocks are fixedly installed at the bottom of the turntable 3. The multiple support blocks are distributed in a ring at the bottom of the turntable 3. The bottom of the support block is nested with ball bearings. The ball bearings are in contact with the top of the bracket 2. The support blocks can support the turntable 3 and improve the stability of the turntable 3 when rotating.

[0023] In a further preferred embodiment of the present invention, the control mechanism includes: an installation plate 9 disposed within the discharge pipe 4011; a spring 10 assembled within the discharge pipe 4011, the bottom end of the spring 10 being fixedly connected to the top of the installation plate 9, and a telescopic protective sleeve 11 for protecting the spring 10 being disposed within the spring 10, the bottom end of the telescopic protective sleeve 11 being fixedly connected to the top of the installation plate 9, and the top end of the telescopic protective sleeve 11 being connected to the discharge port at the bottom of the fertilizer storage tank 4; a blocking block 12 fixedly installed at the bottom of the installation plate 9, the blocking block 12 being adapted to the discharge port 5, and the blocking block 12 being used to block the discharge port 5; and a plurality of discharge holes 13 formed on the installation plate 9, the plurality of discharge holes 13 being arranged in a ring. The mounting plate 9 is equipped with a plurality of plugs 14 fixedly installed on the inner wall of the bottom of the discharge pipe 4011. Each plug 14 is adapted to and connected to a plurality of discharge holes 13, and the plugs 14 are used to block the discharge holes 13. An electric telescopic rod 15 is fixedly installed on the outer wall of the feed pipe 6, and a connecting plate 16 is fixedly installed on the output shaft of the electric telescopic rod 15. A shield 17 is disposed in the feed pipe 6, and the outer wall of the shield 17 is fixedly connected to one end of the connecting plate 16. A first push rod 18 is fixedly installed in the shield 17. The first push rod 18 is used to push the plug 12 upward to disengage from the blockage of the discharge port 5, and at the same time push the mounting plate 9 to move the discharge hole 13 upward, so that the discharge hole 13 and the plug 14 are disengaged.

[0024] In this embodiment, when the rotating mechanism rotates the discharge port 5 on the corresponding fertilizer storage tank 4 to the top of the feed pipe 6, and discharge is required, the controller starts the electric telescopic rod 15 to drive the connecting plate 16 to move upward a certain distance. The connecting plate 16 then drives the shield 17 to move upward. The first push rod 18 fixedly installed inside the shield 17 moves upward accordingly. The first push rod 18 pushes the block 12 upward, so that the block 12 is released from the blockage of the discharge port 5. At the same time, the first push rod 18 pushes the mounting plate 9 upward and compresses the spring 10. The mounting plate 9 drives the discharge hole 13 upward, so that the discharge hole 13 is disengaged from the plug 14. At this time, the fertilizer solution in the fertilizer storage tank 4 can enter the feed pipe 6 through the discharge hole 13 and the discharge port 5, and then flow into the mixing box 1. In time-based constant flow titration, the flow rate = constant flow rate × time. After the discharge port 5 has been open for a certain period of time, the controller starts the electric telescopic rod 15 to move in the opposite direction. The electric telescopic rod 15 drives the shield 17 and the first top rod 18 back to their original positions. Under the elastic force of the spring 10, the mounting plate 9 drives the block 12 and the discharge hole 13 back to their original positions. The block 12 re-seals the discharge port 5, and the plug 14 re-seals the discharge hole 13, stopping the discharge of fertilizer solution. This allows for precise use of the fertilizer solution.

[0025] In a further preferred embodiment of the present invention, a mixing mechanism is provided inside the mixing tank 1. The mixing mechanism is used to mix various fertilizer solutions inside the mixing tank 1. The mixing mechanism includes: a second servo motor 19 fixedly installed at the bottom of the mixing tank 1; a mixing frame 20 rotatably installed inside the mixing tank 1, wherein the output shaft of the second servo motor 19 is connected to the bottom end of the mixing frame 20 via a coupling; a mounting shell 21 fixedly installed inside the mixing tank 1, wherein the mixing frame 20 and the mounting shell 21 are rotatably connected; two augers 22 symmetrically rotatably installed on the mounting shell 21; and three bevel gears 23 respectively fixedly sleeved on the two augers 22 and the mixing frame 20, wherein the two bevel gears 23 fixedly sleeved on the two augers 22 mesh with the bevel gear 23 fixedly sleeved on the mixing frame 20.

[0026] In this embodiment, after all the fertilizer solution is added to the mixing tank 1, when the mixing mechanism is used, the second servo motor 19 is started by the controller. When the second servo motor 19 is started, the rotation of the output shaft of the second servo motor 19 is transmitted to the mixing frame 20, causing the mixing frame 20 to rotate vertically. When the mixing frame 20 rotates under the drive of the second servo motor 19, it drives the two augers 22 through the meshing transmission of the bevel gear 23. The mixing rack 20 rotates horizontally, providing vertical shearing force to the fertilizer solution, while the auger 22 provides lateral shearing force. By shearing and colliding the fertilizer solution in different directions, the fertilizer solution is thoroughly mixed, ensuring uniform distribution of various fertilizers, improving the mixing efficiency and quality of the fertilizer, and providing more balanced nutrition for crops. A scraper is fixedly installed on the mixing rack 20, contacting the inner wall of the mixing chamber 1. When cleaning the mixing chamber 1 laterally, the controller activates the second servo motor 19 to drive the mixing rack 20 and the scraper to rotate, thereby allowing the scraper to better clean the inner wall of the mixing chamber 1 and improving the cleaning effect.

[0027] In a further preferred embodiment of the present invention, a cleaning mechanism is provided on the mixing tank 1. The cleaning mechanism is used to clean the fertilizer storage tank 4. The cleaning mechanism includes: a water inlet frame 24 provided on the mixing tank 1, which is used to spray cleaning water into the discharge port 5 to clean the fertilizer storage tank 4. A second push rod 27 is fixedly installed inside the water inlet frame 24. The second push rod 27 is used to push the block 12 upward to disengage from the blockage of the discharge port 5, and at the same time push the mounting plate 9 to move the discharge hole 13 upward, so that the discharge hole 13 and the block 14 are disconnected; a water inlet pipe 25 connected to the water inlet frame 24, which is used to guide the cleaning water into the water inlet frame 24; and a drain pipe 26 provided on the water inlet frame 24, which is used to discharge the wastewater used to clean the fertilizer storage tank 4. A solenoid valve is provided on the drain pipe 26.

[0028] In this embodiment, when the fertilizer storage tank 4 needs to be cleaned, the corresponding fertilizer storage tank 4 is adjusted to be directly above the water inlet frame 24 via a rotating mechanism. First, the moving mechanism is activated by the controller to drive the water inlet frame 24 and the baffle 29 to move relative to each other. The baffle 29 moves down to block the top of the discharge pipe 28. The water inlet frame 24 and the second push rod 27 move up. The moved water inlet frame 24 connects with the discharge port 5. The moved second push rod 27 pushes the block 12 up to disengage from the blockage of the discharge port 5. The mounting plate 9 is pushed to move the discharge hole 13 upward, causing the discharge hole 13 and the plug 14 to disconnect. The water inlet pipe 25 is then connected to the outlet of the external pressure pump. The pressure pump supplies water to the water inlet pipe 25. The pressurized cleaning water enters the fertilizer storage tank 4 through the discharge port 5 and the discharge hole 13. The cleaning water entering the fertilizer storage tank 4 washes the inner wall of the fertilizer storage tank 4 and the residual fertilizer inside. After cleaning for a period of time, the solenoid valve on the drain pipe 26 is opened by the controller, and the wastewater flows through the drain pipe 26. The cleaning operation of fertilizer storage tank 4 is completed after the discharge device is removed. The cleaning is convenient and simple, avoiding cross-contamination between different fertilizers and ensuring the purity and quality of fertilizers for the next application. The entire cleaning process is simple and convenient, without complicated operating steps or additional tools, reducing the labor intensity of operators and improving cleaning efficiency. When other fertilizer storage tanks 4 need to be cleaned, the rotating mechanism is restarted by the controller to adjust the corresponding fertilizer storage tank 4 to be directly above the water inlet frame 24, and then the other fertilizer storage tanks 4 can be cleaned according to the above operating steps.

[0029] In a further preferred embodiment of the present invention, a discharge pipe 28 is provided on the top of the fertilizer storage tank 4. The discharge pipe 28 is used to put fertilizer solution into the fertilizer storage tank 4. A mounting bracket 30 is fixedly installed on one side of the mixing box 1. A cover 29 is provided on one side of the mounting bracket 30. The cover 29 is used to block the top of the discharge pipe 28. A moving mechanism is assembled on the water inlet bracket 24 and the cover 29. The moving mechanism is used to drive the water inlet bracket 24 and the second push rod 27 to move relative to the cover 29. The lowered cover 29 blocks the top of the discharge pipe 28. The uppered water inlet bracket 24 connects with the discharge port 5. The uppered second push rod 27 pushes the block 12 to move upward to disengage from the blockage of the discharge port 5. At the same time, it pushes the mounting plate 9 to move the discharge hole 13 upward, so that the discharge hole 13 and the plug 14 are disengaged.

[0030] In this embodiment, when cleaning the fertilizer storage tank 4, the controller first activates the moving mechanism to move the water inlet frame 24 and the second push rod 27 relative to the cover 29. The cover 29 moves down to block the top of the discharge pipe 28, and the water inlet frame 24 and the second push rod 27 move up. The moving water inlet frame 24 connects with the discharge port 5. The moving second push rod 27 pushes the block 12 up to disengage from the blockage of the discharge port 5, and at the same time pushes the mounting plate 9 to move the discharge hole 13 up, so that the discharge hole 13 and the plug 14 are disconnected, thereby facilitating the entry of cleaning water into the fertilizer storage tank 4 for cleaning.

[0031] In a further preferred embodiment of the present invention, the moving mechanism includes: a dual-axis motor 31 fixedly mounted on the mounting frame 30; two lead screws 32 rotatably mounted on the mounting frame 30, wherein the two output shafts of the dual-axis motor 31 are respectively connected to one end of the two lead screws 32 via couplings; and two horizontal plates 33 respectively threadedly mounted on the two lead screws 32, wherein the two horizontal plates 33 are respectively fixedly connected to the baffle 29 and the water inlet frame 24.

[0032] In this embodiment, when cleaning is required inside the fertilizer storage tank 4, the dual-axis motor 31 is started by the controller to rotate at a certain angle. The two output shafts of the dual-axis motor 31 drive the two lead screws 32 to rotate through the couplings. Two limit rods are fixedly installed on the mounting bracket 30. The two limit rods are slidably connected to the two horizontal plates 33 respectively. The limit rods limit the horizontal plates 33, so that the two lead screws 32 drive the two horizontal plates 33 to move relative to each other. This causes the cover 29 to move down to block the top of the discharge pipe 28, preventing the cleaning water from being discharged through the discharge pipe 28. The water inlet bracket 24 and the second push rod 27 move up. The moving water inlet bracket 24 connects with the discharge port 5. The moving second push rod 27 pushes the block 12 to move up and disengage from the blockage of the discharge port 5. At the same time, it pushes the mounting plate 9 to move the discharge hole 13 up, so that the discharge hole 13 and the plug 14 are disengaged, thus facilitating the entry of cleaning water into the fertilizer storage tank 4 for cleaning.

[0033] In a further preferred embodiment of the present invention, a retaining ring 34 is fixedly installed at the top of the water inlet frame 24, and an annular groove 35 is provided at the bottom of the discharge pipe 4011. The retaining ring 34 and the groove 35 are adapted to be connected.

[0034] In this embodiment, when the fertilization preparation work is carried out and the moving mechanism drives the water inlet frame 24 to move upward, the retaining ring 34 fixedly installed at the top of the water inlet frame 24 will connect with the annular retaining groove 35 opened at the bottom of the discharge pipe 4011, and a sealing ring is provided on the retaining ring 34, thereby making the water inlet frame 24 and the discharge port 5 on the discharge pipe 4011 stably connected and connected, so that the water flow can smoothly enter the discharge port 5 through the water inlet frame 24, and prevent the water flow from being discharged through the connection between the water inlet frame 24 and the discharge port 5, thereby improving the stability during cleaning.

[0035] In a further preferred embodiment of the present invention, a sliding rod 38 is fixedly installed on the top of the mixing tank 1, and a slider 37 is fixedly installed on the outer wall of the water inlet frame 24. The slider 37 and the sliding rod 38 are slidably connected. The fertilizer storage tank 4 includes an inner liner 401, a buffer layer 402 and a stainless steel outer shell 403. The buffer layer 402 is disposed inside the stainless steel outer shell 403, and the inner liner 401 is disposed inside the buffer layer 402.

[0036] In this embodiment, when the moving mechanism drives the water inlet frame 24 to move upward, the water inlet frame 24 drives the slider 37 to slide on the slide bar 38, so that the water inlet frame 24 can move upward stably and accurately until the retaining ring 34 at the top of the water inlet frame 24 is adapted to connect with the annular retaining groove 35 at the bottom of the discharge pipe 4011, thereby realizing the docking and connection between the water inlet frame 24 and the discharge port 5. The inner liner 401 is made of high borosilicate glass, integrally molded, and in direct contact with fertilizer, ensuring absolute resistance to highly corrosive liquids. It is directly used for storing fertilizer solutions. The buffer layer 402 is made of high-density foam material, which plays a role in shock absorption and cushioning, preventing the inner liner 401 from breaking. The stainless steel outer shell 403 provides a robust outer layer of protection for the entire fertilizer storage tank 4, enhancing the structural strength and durability of the fertilizer storage tank 4. At the same time, the stainless steel material has corrosion-resistant properties, which can resist some corrosive factors in the external environment and extend the service life of the fertilizer storage tank 4. The fertilizer storage tank 4 has two symmetrically opened clearance openings 4012 on the left and right sides, at which the inner liner 401 is exposed. The mixing box 1 is equipped with a photoelectric sensor, which includes a photoelectric sensor transmitter body 40 of model E3Z-T61 and a photoelectric sensor receiver body 41 of model E3Z-R61. Two mounting rods 39 are symmetrically fixed on the mixing box 1. The main body 41 is respectively mounted on two mounting rods 39, and the photoelectric sensor transmitter body 40 and the photoelectric sensor receiver body 41 are located on both sides of the feed pipe 6. When the corresponding fertilizer storage tank 4 is adjusted to be above the feed pipe 6, the photoelectric sensor transmitter body 40 and the photoelectric sensor receiver body 41 are located on both sides of the two clearance ports 4012. The beam emitted by the photoelectric sensor attempts to pass through the two clearance ports 4012. If it is blocked by liquid (no signal), it means that the liquid volume is sufficient. At this time, the photoelectric sensor sends a signal to the controller. The controller receives and recognizes the signal, and then the controller starts the control mechanism to open the discharge port 5. If the beam penetrates (signal), it means that the liquid level is lower than the warning line. At this time, the photoelectric sensor sends a signal to the controller. The controller receives and recognizes the signal. The controller will not start the control mechanism to open the discharge port 5. At the same time, the controller will trigger the buzzer set on one side of the device to sound an alarm, so that the staff can replenish the fertilizer solution in time, thereby improving the overall safety of use.

[0037] This invention also proposes a method for a precision fertilization device based on rotational indexing, comprising: S1: Different fertilizer storage tanks 4 contain different fertilizer solutions. When multiple fertilizer solutions need to be mixed and used, the controller starts the rotating mechanism, which adjusts the discharge port 5 on the corresponding fertilizer storage tank 4 to the top of the feed pipe 6. S2: After adjustment, the controller starts the control mechanism to open the discharge port 5. Then the fertilizer solution in the fertilizer storage tank 4 is discharged through the discharge port 5 below it and enters the mixing tank 1 through the feed pipe 6. Based on time-based constant flow titration, the flow rate = constant flow rate × time. After the discharge port 5 has been open for a certain period of time, the controller starts the control mechanism to block the discharge port 5, thereby stopping the feeding. S3: After the fertilizer solution in one fertilizer storage tank 4 is added, the fertilizer solution in other fertilizer storage tanks 4 is added to the mixing tank 1 in the same way as above, so that multiple fertilizer solutions are added to the mixing tank 1 for mixing and fertilization.

[0038] In summary, compared with related technologies, this device enables precise fertilization, has a relatively simple structure, reduces costs, minimizes potential failure points, facilitates maintenance, and better meets practical application needs.

[0039] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0040] 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 precision fertilization device based on rotational indexing, characterized in that, include: A mixing tank for mixing multiple fertilizer solutions, wherein a support is fixedly installed on the mixing tank, a turntable is provided on the top of the support, and multiple fertilizer storage tanks for storing fertilizer solutions are provided on the turntable. A discharge pipe is fixedly installed at the bottom of the fertilizer storage tank, and a discharge port is opened at the bottom of the discharge pipe. The fertilizer solution discharged from the discharge port enters the mixing tank through the feed pipe installed on the mixing tank. A rotating mechanism mounted on the bracket and the turntable is used to adjust the discharge port on the fertilizer storage tank to the top of the feed pipe for discharge; A control mechanism is mounted on the feed pipe and the discharge port, the control mechanism being used to control the opening and closing of the discharge port.

2. The precision fertilization device based on rotational indexing according to claim 1, characterized in that, The rotating mechanism includes: A first servo motor is fixedly mounted on the bracket; The mounting shaft is rotated and mounted on the bracket. The top end of the mounting shaft is fixedly connected to the bottom of the turntable, and the output shaft of the first servo motor is connected to the bottom end of the mounting shaft through a coupling.

3. The precision fertilization device based on rotational indexing according to claim 1, characterized in that, The control mechanism includes: An installation plate disposed inside the discharge pipe; A spring is assembled inside the discharge pipe. The bottom end of the spring is fixedly connected to the top of the mounting plate. A telescopic protective sleeve is provided inside the spring to protect the spring. The bottom end of the telescopic protective sleeve is fixedly connected to the top of the mounting plate. The top end of the telescopic protective sleeve is connected to the discharge port at the bottom of the fertilizer storage tank. A blocking block is fixedly installed at the bottom of the mounting plate. The blocking block is adapted to the discharge port and is used to block the discharge port. Multiple discharge holes are provided on the mounting plate, and the multiple discharge holes are distributed in a ring on the mounting plate; Multiple plugs are fixedly installed on the inner wall of the bottom of the discharge pipe, and the multiple plugs are respectively adapted and connected to the multiple discharge holes. The plugs are used to block the discharge holes. An electric telescopic rod is fixedly installed on the outer wall of the feed pipe, and a connecting plate is fixedly installed on the output shaft of the electric telescopic rod; A shield is installed inside the feed pipe, and the outer wall of the shield is fixedly connected to one end of the connecting plate; A first push rod is fixedly installed inside the shield. The first push rod is used to push the block to move upward and disengage from the discharge port, and at the same time push the mounting plate to move the discharge hole upward, so that the discharge hole and the block are disconnected.

4. The precision fertilization device based on rotational indexing according to claim 1, characterized in that, The mixing tank is equipped with a mixing mechanism for mixing various fertilizer solutions within the mixing tank. The mixing mechanism includes: A second servo motor is fixedly installed at the bottom of the mixing chamber; The mixing frame installed inside the mixing chamber is rotated, and the output shaft of the second servo motor is connected to the bottom end of the mixing frame via a coupling; A mounting shell is fixedly installed inside the mixing chamber, and the mixing frame and the mounting shell are rotatably connected; Two augers are symmetrically rotated and mounted on the mounting housing; Three bevel gears are respectively fixedly sleeved on the two augers and the mixing frame, and the two bevel gears fixedly sleeved on the two augers are meshed with the bevel gear fixedly sleeved on the mixing frame.

5. The precision fertilization device based on rotational indexing according to claim 3, characterized in that, The mixing tank is equipped with a cleaning mechanism, which is used to clean the inside of the fertilizer storage tank. The cleaning mechanism includes: A water inlet frame is installed on the mixing tank. The water inlet frame is used to spray cleaning water into the discharge port to clean the fertilizer storage tank. A second push rod is fixedly installed inside the water inlet frame. The second push rod is used to push the plug block to move upward and disengage from the discharge port. At the same time, it pushes the mounting plate to move the discharge hole upward and disengage the discharge hole from the plug block. A water inlet pipe connected to the water inlet frame is used to guide cleaning water into the water inlet frame; The drain pipe installed on the water inlet frame is used to discharge the wastewater used for cleaning the fertilizer storage tank, and a solenoid valve is installed on the drain pipe.

6. The precision fertilization device based on rotational indexing according to claim 5, characterized in that, The fertilizer storage tank is equipped with a discharge pipe at the top, which is used to put fertilizer solution into the fertilizer storage tank. A mounting frame is fixedly installed on one side of the mixing box, and a cover is provided on one side of the mounting frame. The cover is used to block the top of the discharge pipe. A moving mechanism is assembled on the water inlet frame and the cover. The moving mechanism is used to drive the water inlet frame and the second push rod to move relative to the cover. The lowered cover blocks the top of the discharge pipe, and the uppered water inlet frame connects with the discharge port. The uppered second push rod pushes the plug block to move upward to disengage from the blockage of the discharge port, and at the same time pushes the mounting plate to move the discharge hole upward, so that the discharge hole and the plug block are disengaged.

7. The precision fertilization device based on rotational indexing according to claim 6, characterized in that, The mobile mechanism includes: A dual-axis motor fixedly mounted on the mounting bracket; The two lead screws mounted on the mounting bracket are rotated, and the two output shafts of the dual-axis motor are respectively connected to one end of the two lead screws through couplings; Two horizontal plates are respectively threaded onto the two lead screws, and the two horizontal plates are respectively fixedly connected to the baffle and the water inlet frame.

8. The precision fertilization device based on rotational indexing according to claim 5, characterized in that, A retaining ring is fixedly installed at the top of the water inlet frame, and an annular groove is opened at the bottom of the discharge pipe. The retaining ring and the groove are adapted to each other.

9. The precision fertilization device based on rotational indexing according to claim 5, characterized in that, A sliding rod is fixedly installed on the top of the mixing tank, and a slider is fixedly installed on the outer wall of the water inlet frame. The slider and the sliding rod are slidably connected. The fertilizer storage tank includes an inner liner, a buffer layer and a stainless steel outer shell. The buffer layer is disposed inside the stainless steel outer shell, and the inner liner is disposed inside the buffer layer.

10. A method for a precision fertilization device based on rotational indexing as described in any one of claims 1-9, characterized in that, The method includes the following steps: S1: Different fertilizer storage tanks contain different fertilizer solutions. When multiple fertilizer solutions need to be mixed and used, the controller starts the rotating mechanism, which adjusts the discharge port on the corresponding fertilizer storage tank to the top of the feed pipe. S2: After adjustment, the controller starts the control mechanism to open the discharge port. Then the fertilizer solution in the storage tank is discharged through the discharge port below and enters the mixing tank through the feed pipe. Based on time-based constant flow titration, the flow rate = constant flow rate × time. After the discharge port has been open for a certain period of time, the controller starts the control mechanism to block the discharge port, thereby stopping the feeding. S3: After the fertilizer solution in one fertilizer storage tank 4 is added, the fertilizer solution in other fertilizer storage tanks is added to the mixing tank in the same way as above, so that multiple fertilizer solutions are added to the mixing tank for mixing and fertilization.

Images