Sustained and controlled release fertilizer production device
By designing an integrated drying and screening box that combines drying and screening functions, the problems of low efficiency and particle sticking in the production of controlled-release fertilizers have been solved, achieving a highly efficient and uniform fertilizer production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-31
AI Technical Summary
In the production of controlled-release fertilizers, drying and screening are independent process steps, resulting in low production efficiency, high energy consumption, and fertilizer particles are prone to sticking together, affecting uniformity and flowability, and increasing the risk of contamination during material transportation.
Design a drying and screening integrated box that combines drying and screening functions. A motor-driven linkage system enables fertilizer particles to vibrate up and down and move back and forth to prevent sticking. A hot air drying device improves drying efficiency.
It improves the uniformity and flowability of fertilizer particles, enhances screening accuracy and efficiency, reduces production time, and lowers energy consumption and the risk of pollution during material transportation.
Smart Images
Figure CN224065847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of controlled-release fertilizer technology, specifically a controlled-release fertilizer production device. Background Technology
[0002] Slow-release fertilizers, as a type of fertilizer that can continuously and stably supply the nutrients needed for crop growth, play an important role in modern agricultural production. Most of them use coating technology to achieve slow or controlled release of fertilizer within a controlled time. The control mechanism is that the coating dissolves or degrades, causing the coating film to break or leak, so that the fertilizer nutrients inside the coating dissolve and are released in water. The coating materials are currently mostly composed of polyurethane formed by cross-linking and curing of polyols and isocyanates, and plastics formed by cross-linking and curing of multi-component polymers.
[0003] In the production process of controlled-release fertilizers, after the cross-linking and curing material forms a coating film on the outside of the fertilizer particles, the moisture inside the coating film needs to be dried immediately to reduce the viscosity of the coating film and prevent the controlled-release fertilizer particles from sticking together, causing the fertilizer to clump and become unusable.
[0004] During the drying process, the evaporation of moisture from the surface of fertilizer granules can cause the coatings to become sticky, leading to adjacent controlled-release fertilizer granules sticking together. This sticking not only reduces the uniformity and flowability of the fertilizer granules, but also causes waste in subsequent grading and packaging processes.
[0005] Furthermore, since drying and screening are two independent process steps, additional material conveying and waiting time is required between them, which leads to reduced production efficiency and increased energy consumption. During the material conveying process, fertilizer particles may be contaminated by the external environment or dust pollution may be generated due to wear and tear of the conveying equipment, affecting the quality and safety of the product.
[0006] In view of the above, this application is hereby submitted. Utility Model Content
[0007] The purpose of this invention is to provide a controlled-release fertilizer production device to solve the problems mentioned in the background art.
[0008] To solve the above-mentioned technical problems, this utility model provides a slow-release fertilizer production device, including an integrated drying and screening box, wherein a screening mechanism is fixedly installed on the inner wall of the integrated drying and screening box;
[0009] The screening mechanism includes a fixed plate fixedly installed on the inner wall of the drying and screening integrated box. A motor is fixedly installed on the side wall of the fixed plate. A second connecting rod is fixedly installed on the drive end of the motor. A first connecting rod is rotatably installed on the top of the second connecting rod. A connecting plate is rotatably installed on one side of the connecting rod. A limit plate is slidably installed on the bottom of the connecting plate. A reciprocating rod is fixedly installed on the bottom of the limit plate. A work frame is fixedly installed on the bottom of the reciprocating rod. A roller is slidably installed on the inner wall of the work frame. An eccentric rod is fixedly installed on the eccentric part of the roller. A third connecting rod is rotatably installed on the side of the eccentric rod. The side of the third connecting rod is rotatably connected to the bottom of the second connecting rod.
[0010] Furthermore, a guide plate is fixedly installed on the top of the drying chamber, and a discharge port is opened on the outer wall of the drying and screening integrated box. The bottom of the inner wall of the discharge port is installed parallel to the guide plate. A connecting shaft is fixedly installed on the end of the connecting plate away from the baffle, and the inner wall of the connecting shaft is rotatably connected to one end of the connecting rod.
[0011] Furthermore, a slider is fixedly installed at the bottom of the connecting plate, a groove is provided at the top of the limiting plate, the outer wall of the slider is slidably connected to the inner wall of the groove, a support plate is fixedly installed on the side wall of the fixing plate, and the side wall of the motor is fixedly connected to the end of the support plate.
[0012] Furthermore, a drying plate is fixedly installed on the inner wall of the drying and screening integrated box, and a drying chamber is opened on the inner wall of the drying and screening integrated box. A drying device is installed inside the drying chamber, and the drying chamber is connected to the inner wall of the drying plate.
[0013] Furthermore, a baffle is snapped onto the side wall of the connecting plate, and a sieve plate is fixedly installed at the bottom of the baffle. A reciprocating groove is opened on the inner side wall of the drying and screening integrated box, and the inner wall size of the reciprocating groove is equal to the outer wall size of the connecting plate.
[0014] Furthermore, the drying plate is attached to and slidably connected to the side wall of the baffle, the inner wall of the drying and screening integrated box is 5cm away from the outer wall of the baffle, and a cover plate is provided on the top of the baffle.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: through the integrated drying and screening box, the up-and-down vibration of the screening mechanism during the drying process effectively prevents the adhesion of fertilizer particles caused by the evaporation of surface moisture, ensuring the uniformity and flowability of fertilizer particles, improving screening accuracy and efficiency, and combining the two process steps of drying and screening into a continuous process, avoiding the step of additional material transportation to independent screening equipment after drying in traditional production devices, thereby reducing production time and improving production efficiency. Attached Figure Description
[0016] Figure 1 This is a front structural diagram of a controlled-release fertilizer production device;
[0017] Figure 2 This is a schematic cross-sectional view of a controlled-release fertilizer production device.
[0018] Figure 3 This is a schematic diagram of a sieve plate structure in a controlled-release fertilizer production device.
[0019] Figure 4 This is a schematic diagram of the reciprocating rod structure of a controlled-release fertilizer production device.
[0020] In the diagram: 1. Drying and screening integrated box; 2. Drying plate; 3. Baffle; 4. Discharge port; 5. Reciprocating trough; 6. Connecting plate; 7. Limiting plate; 8. Connecting rod one; 9. Connecting rod two; 10. Motor; 11. Connecting rod three; 12. Eccentric rod; 13. Roller; 14. Working frame; 15. Screen plate; 16. Guide plate; 17. Drying chamber; 18. Support plate; 19. Fixing plate; 20. Sliding block; 21. Connecting shaft; 22. Slide groove; 23. Reciprocating rod. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-4This utility model provides a technical solution: a controlled-release fertilizer production device, including a drying and screening integrated box 1, a screening mechanism fixedly installed on the inner wall of the drying and screening integrated box 1, the screening mechanism including a fixed plate 19 fixedly installed on the inner wall of the drying and screening integrated box 1, a motor 10 fixedly installed on the side wall of the fixed plate 19, a connecting rod 2 9 fixedly installed on the drive end of the motor 10, when the motor 10 starts, it drives the connecting rod 2 9 to reciprocate. A connecting rod 1 8 is rotatably installed on the top of the connecting rod 2 9, and a connecting plate 6 is rotatably installed on the side end of the connecting rod 1 8. Through the linkage between the connecting rod 1 8 and the connecting rod 2 9, the reciprocating swing of the connecting rod 2 9 is converted into the reciprocating translational motion of the connecting plate 6. A limiting plate 7 is slidably installed at the bottom of the connecting plate 6. A reciprocating rod 23 is fixedly installed at the bottom of the limiting plate 7. A working frame 14 is fixedly installed at the bottom of the reciprocating rod 23. A roller 13 is slidably installed on the inner wall of the working frame 14. An eccentric rod 12 is fixedly installed at the eccentric part of the roller 13. A connecting rod 11 is rotatably installed on the side end of the eccentric rod 12. The side end of the connecting rod 11 is rotatably connected to the bottom of the connecting rod 9. This allows the connecting plate 6 to move back and forth, and through the linkage of the roller 13 and the eccentric rod 12, drive the working frame 14 and the reciprocating rod 23 to vibrate up and down. This causes the screen plate 15 to also exhibit a motion trajectory of reciprocating translation superimposed with up and down vibration. This helps to disperse and screen fertilizer particles, improves screening efficiency and accuracy, and the up and down vibration can also effectively prevent fertilizer particles from sticking together due to surface moisture evaporation during the drying process. This ensures the uniformity and flowability of fertilizer particles, providing a strong guarantee for subsequent processing and packaging.
[0023] It should be noted that when the motor 10 starts, it is set to low speed and drives the connecting rod 2 9 to swing back and forth at a low amplitude. During this stage, the translation and vibration amplitude of the screen plate 15 are small, so as to avoid the fertilizer particles being overly dispersed before they are shaped and to ensure that the particles are initially formed.
[0024] After the fertilizer surface is slightly dry, manually adjust the motor speed to high speed mode. The swing amplitude of the connecting rod 2 9 increases, and the translation and vibration frequency of the screen plate 15 increases, which promotes the passage of oversized particles through the screen holes and is filtered by the screen plate 15 to achieve efficient screening.
[0025] The motor 10 is equipped with "low speed" and "high speed" gears, and the operator can adjust the reciprocating speed of the motor 10 according to the degree of dryness of the fertilizer.
[0026] Please see Figure 1 , Figure 2This utility model provides a technical solution: a controlled-release fertilizer production device, including a baffle 3 snapped onto the side wall of a connecting plate 6, a sieve plate 15 fixedly installed at the bottom of the baffle 3, and a reciprocating groove 5 opened on the inner side wall of the drying and screening integrated box 1, with the inner wall size of the reciprocating groove 5 being equal to the outer wall size of the connecting plate 6. During the reciprocating translation and up-and-down vibration of the connecting plate 6, its outer wall is in contact with the inner wall of the reciprocating groove 5, ensuring that the connecting plate 6 and the sieve plate 15 on it can move stably along a predetermined trajectory, effectively avoiding incomplete screening or clogging caused by shaking or deviation, thereby ensuring that fertilizer particles can pass through the sieve holes uniformly and continuously. The snap-fit installation method also makes the disassembly and installation of the baffle 3 relatively simple. When it is necessary to collect the particles in the sieve plate 15, the operator can easily remove it from the connecting plate 6, improving the overall operating efficiency and reliability of the equipment.
[0027] Please see Figure 2 This utility model provides a technical solution: a controlled-release fertilizer production device, including a drying and screening integrated box 1 with a drying plate 2 fixedly installed on the inner wall, and a drying chamber 17 opened on the inner wall. The drying chamber 17 is equipped with a drying device, and the drying chamber 17 is connected to the inner wall of the drying plate 2. The drying device inside the drying chamber 17 can generate hot air. This hot air is blown evenly onto the fertilizer particles on the drying plate 2 through the connecting channel between the drying chamber 17 and the inner wall of the drying plate 2, ensuring that the fertilizer particles can fully contact the hot air, thereby improving drying efficiency and shortening drying time. The drying and screening functions are completed in the same equipment, reducing material transportation and waiting time, and improving overall production efficiency.
[0028] It should be noted that in the integrated drying and screening process, the drying speed of small granular fertilizer is faster than that of large granular fertilizer. When the fertilizer granules are dried by hot air on the drying plate 2, the small granular fertilizer has more sufficient contact with the hot air, so its moisture evaporates faster and the drying efficiency is higher. When the small granular fertilizer passes through the screen plate 15, the drying process has been completed, ensuring the drying quality of the small granular fertilizer and avoiding energy waste and fertilizer quality degradation caused by over-drying.
[0029] Please see Figure 2 This utility model provides a technical solution: a controlled-release fertilizer production device, including a guide plate 16 fixedly installed on the top of a drying chamber 17. The guide plate 16 can guide the small granular fertilizer that has been dried and screened to flow along a predetermined path to the discharge port 4 opened on the outer wall of the drying and screening integrated box 1. The bottom of the inner wall of the discharge port 4 is installed parallel to the guide plate 16, which avoids the accumulation and retention of materials on the top of the drying chamber 17, and ensures that the materials can flow out of the equipment smoothly and continuously, thereby improving the discharge efficiency and the overall operational stability of the equipment.
[0030] Please see Figure 3, Figure 4 This utility model provides a technical solution: a controlled-release fertilizer production device, including a connecting plate 6 with a slider 20 fixedly installed at the bottom, and a limiting plate 7 with a groove 22 opened at the top. The outer wall of the slider 20 and the inner wall of the groove 22 are slidably connected, which provides a guiding function for the connecting plate 6, so that the connecting plate 6 can remain stable during the movement, avoid the occurrence of deviation or shaking, and improve the overall stability of the screening mechanism.
[0031] Please see Figure 3 This utility model provides a technical solution: a controlled-release fertilizer production device, including a connecting plate 6 with a connecting shaft 21 fixedly installed at the end away from the baffle 3. The inner wall of the connecting shaft 21 is rotatably connected to the end of the connecting rod 8. The rotatable connection between the connecting shaft 21 and the connecting rod 8 makes the transmission between the two more flexible, allowing the connecting rod 8 to rotate relative to the connecting shaft 21 when transmitting power, thereby adapting to different motion trajectories and angle changes.
[0032] Please see Figure 1 , Figure 2 This utility model provides a technical solution: a controlled-release fertilizer production device, including a drying plate 2 and a baffle 3 with their side walls attached and slidably connected, while the inner wall of the drying and screening integrated box 1 and the outer wall of the baffle 3 maintain a distance of 5cm, which provides sufficient space for the translational movement of the sieve plate 15 and the baffle 3, and a cover plate is also provided on the top of the baffle 3.
[0033] Please see Figure 2 This utility model provides a technical solution: a controlled-release fertilizer production device, including a support plate 18 fixedly installed on the side wall of a fixed plate 19. The support plate 18 serves as a support structure for a motor 10 and is fixedly installed on the side wall of the fixed plate 19, providing a stable support point for the motor 10. The side wall of the motor 10 is fixedly connected to the end of the support plate 18, ensuring the stability of the motor 10 during operation and effectively reducing displacement or shaking caused by vibration or external force.
[0034] Working principle: After the motor 10 starts, it drives the connecting rod 2 9 to swing back and forth. The swing of connecting rod 29, through the linkage mechanism of connecting rod 18, converts the reciprocating swing into the reciprocating translational motion of connecting plate 6. The reciprocating translational motion of connecting plate 6 directly drives baffle 3 and screen plate 15 to move synchronously, realizing the particle size classification of fertilizer. The swing of connecting rod 29 synchronously drives connecting rod 31, which in turn drives eccentric rod 12 to rotate. The rotation of eccentric rod 12 is eccentrically mounted on roller 13, causing roller 13 to generate vertical displacement while rotating around the axis. The vertical movement of roller 13 is transmitted to reciprocating rod 23 and connecting plate 6 through working frame 14, so that screen plate 15 vibrates vertically on the basis of translation. At this time, the drying device is started. Hot air enters drying plate 2 through drying chamber 17 and is blown out through air outlet on the surface of drying plate 2 to dry fertilizer particles. At this time, vertical vibration effectively prevents fertilizer particles from sticking together due to surface moisture evaporation during the drying process, ensuring screening accuracy and efficiency. Subsequently, the small particles after screening slide down to discharge port 4 through guide plate 16 for collection.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A slow controlled release fertilizer production device comprising a drying and screening integrated box (1), characterized in that: The drying and screening integrated box (1) is internally fixedly installed with a screening mechanism; The screening mechanism comprises a fixed plate (19) fixedly installed on the inner wall of the drying and screening integrated box (1), the fixed plate (19) is fixedly installed with a motor (10) on the side wall, the motor (10) is fixedly installed with a connecting rod II (9) on the driving end, the connecting rod II (9) is rotatably installed with a connecting rod I (8) on the top, the connecting rod I (8) is rotatably installed with a connecting plate (6) on the side end, the connecting plate (6) is slidably installed with a limiting plate (7) on the bottom, the limiting plate (7) is fixedly installed with a reciprocating rod (23) on the bottom, the reciprocating rod (23) is fixedly installed with a working frame (14) on the bottom, the working frame (14) is slidably installed with a roller (13) on the inner wall, the roller (13) is fixedly installed with an eccentric rod (12) at the eccentric position, and the eccentric rod (12) is rotatably installed with a connecting rod III (11) on the side end.
2. The slow controlled release fertilizer production device according to claim 1, characterized in that: The connecting plate (6) is clampedly installed with a baffle (3) on the side wall, the baffle (3) is fixedly installed with a screening plate (15) on the bottom, and the drying and screening integrated box (1) is internally provided with a reciprocating groove (5) on the inner side wall, and the reciprocating groove (5) is equal in size to the outer wall of the connecting plate (6).
3. A slow controlled release fertilizer production device as claimed in claim 2, characterized in that: The drying and screening integrated box (1) is internally fixedly installed with a drying plate (2), the drying and screening integrated box (1) is internally provided with a drying bin (17), the drying bin (17) is internally provided with a drying device, and the drying bin (17) is in communication with the inner wall of the drying plate (2).
4. The slow controlled release fertilizer production device according to claim 3, characterized in that: The drying bin (17) is fixedly installed with a guide plate (16) on the top, the drying and screening integrated box (1) is externally provided with a discharge port (4), and the inner wall bottom of the discharge port (4) is installed in parallel with the guide plate (16).
5. A slow controlled release fertilizer production device as claimed in claim 4, characterized in that: The connecting plate (6) is fixedly installed with a sliding block (20) on the bottom, the limiting plate (7) is provided with a sliding groove (22) on the top, and the outer wall of the sliding block (20) is slidably connected with the inner wall of the sliding groove (22).
6. A slow controlled release fertilizer production device as claimed in claim 5, characterized in that: The connecting plate (6) is fixedly installed with a connecting shaft (21) on the end away from the baffle (3), and the inner wall of the connecting shaft (21) is rotatably connected with the end of the connecting rod I (8).
7. A slow controlled release fertilizer production device as claimed in claim 6, characterized in that: The drying plate (2) is in abutment and sliding connection with the side wall of the baffle (3), the inner wall of the drying and screening integrated box (1) is 5 cm different from the outer wall of the baffle (3), and the baffle (3) is provided with a cover plate on the top.
8. A slow controlled release fertilizer production device as claimed in claim 7, characterized in that: The fixed plate (19) is fixedly installed with a support plate (18) on the side wall, and the side wall of the motor (10) is fixedly connected with the end of the support plate (18).