Vegetable seed medicine coating equipment
By combining the synergistic effect of the inner rotating drum and the spiral guide strips with the design of the hot air drying box, the problems of low efficiency and uneven drug coating in traditional seed coating methods have been solved, achieving a highly efficient and uniform coating process, thereby improving crop yield and seed vigor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional seed coating methods are inefficient and result in uneven drug distribution, affecting the control effect and crop yield. Furthermore, coated seeds tend to stick together and are difficult to separate.
The device employs a combination design of mixing components and a hot air drying chamber. The rotation of the inner drum and the spiral guide strip work together to ensure uniform spraying of the liquid. The hot air drying chamber achieves uniform drying through a variable speed fan and heating wire array. The equipment integrates mixing and drying functions, and the inclined design of the inner drum prevents seed accumulation.
It significantly improves the quality and efficiency of seed coating, reduces pesticide waste, avoids mechanical damage to seeds, enables continuous operation, enhances overall work efficiency, and ensures seed viability.
Smart Images

Figure CN224084092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seed processing equipment technology, and more specifically, to a vegetable seed coating equipment. Background Technology
[0002] Traditional seed coating methods often involve manual labor or simple mixing devices. These methods are not only inefficient but also result in uneven drug distribution, affecting the final control effect and crop yield. Chinese patent CN218417226U discloses a vegetable seed coating device that uses both horizontal and vertical stirring to mix the vegetable seeds and the pesticide solution, ensuring thorough and even coating. However, this patent does not dry the coated seeds, causing the pesticide-coated seeds to clump together and become difficult to separate. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a vegetable seed coating device to solve the above-mentioned deficiencies.
[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0005] This utility model discloses a vegetable seed coating device, which includes a mixing component and a hot air drying box. One side of the hot air drying box is connected to the mixing component. The mixing component includes a collecting cylinder, an inner rotating cylinder, and a drive motor. One end of the collecting cylinder is fixedly connected to the upper side of the hot air drying box. The inner rotating cylinder passes through the collecting cylinder. The drive motor is installed on the collecting cylinder and drives the inner rotating cylinder to rotate. A liquid spray tank is provided on the hot air drying box, and the liquid spray tank sprays liquid into the inner rotating cylinder.
[0006] Preferably, the collecting cylinder is inclined and has limit rings at both ends. The limit rings are movably connected to the outer wall of the inner rotating cylinder. A recycling pipe is provided at the bottom of the collecting cylinder, and a collecting box is provided at the bottom of the recycling pipe. Excess medicine can be recycled.
[0007] Preferably, the outer wall of the inner rotating cylinder is provided with a sliding groove that matches the limiting ring. The sliding groove and the limiting ring cooperate to fix the position of the inner rotating cylinder. An external gear is fixedly connected to the end of the inner rotating cylinder away from the hot air drying box. The inner rotating cylinder is a hollow cylinder, and excess medicine can leak out through the mesh of the inner rotating cylinder. A spiral guide strip is provided on the inner wall of the inner rotating cylinder. The guide strip makes the seeds roll fully and improves the uniformity of coating.
[0008] Preferably, the output end of the drive motor is connected to a drive gear, which meshes with the external gear. The drive motor drives the inner drum to rotate, thus tumbling the vegetable seeds inside.
[0009] Preferably, the medicine tank is equipped with an infusion pump, the output end of which is connected to an atomizing tube. The atomizing tube is inserted from the inlet of the inner rotating cylinder and is equipped with an atomizing nozzle for uniformly spraying the medicine into the inner rotating cylinder.
[0010] Preferably, a variable speed fan is provided at the bottom of the hot air drying box. The variable speed fan sends irregular PWM signals through a microcontroller, such as an Arduino or a PLC, to make the fan speed change randomly or periodically. A heating wire array is provided above the variable speed fan.
[0011] Preferably, a swaying net is movably connected inside the hot air drying box, and a discharge plate is provided at the other end of the swaying net. A discharge port is provided on the hot air drying box, and the discharge plate passes through the discharge port.
[0012] Preferably, the inner wall of the hot air drying box is provided with a limiting post that is sleeved with the shaking net. A supporting spring is sleeved on the limiting post at the position below the shaking net. The shaking net is inclined as a whole, and the outlet plate is located at the lowest end of the shaking net. A guide plate is provided on the shaking net near the outlet plate to collect vegetable seeds towards the outlet plate.
[0013] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0014] This utility model discloses a vegetable seed coating device. Through the synergistic effect of the rotation of the inner drum and the spiral guide strip, the seeds are fully tumbled during rotation, resulting in more even spraying of the coating solution and significantly improving the coating quality and efficiency. The inner drum is designed with a hollow structure, allowing excess coating solution to be automatically filtered and collected by the collection cylinder and collection box, avoiding waste, saving costs, and reducing environmental pollution. The device uses a variable-speed fan combined with a heating wire array for hot air drying, which not only improves the penetration and drying efficiency of the hot air but also drives the shaking net to vibrate through airflow changes, preventing seed accumulation and ensuring uniform drying. The device integrates the functions of mixing and coating with hot air drying, realizing continuous operation from feeding, coating to drying and discharging, reducing manual intervention and improving overall work efficiency. The inclined design of the inner drum, combined with slow rotation and the flexible vibration of the shaking net, avoids mechanical damage to the seeds and ensures that seed vigor is not affected. Attached Figure Description
[0015] Figure 1 This is an overall structural diagram of the vegetable seed coating equipment of this utility model;
[0016] Figure 2 This is a diagram showing the internal structure of the vegetable seed coating device of this utility model;
[0017] Figure 3 This is a structural diagram of the inner rotating cylinder of this utility model;
[0018] Figure 4 This is a structural diagram of the swaying net of this utility model.
[0019] In the diagram: 1. Mixing component; 11. Collection cylinder; 111. Limiting ring; 112. Recovery pipe; 113. Collection box; 12. Inner rotating cylinder; 121. Slide groove; 122. External gear; 123. Guide bar; 13. Drive motor; 131. Drive gear; 2. Hot air drying oven; 21. Variable speed fan; 22. Heating wire array; 23. Shaking net; 231. Outlet plate; 232. Limiting post; 233. Support spring; 234. Guide plate; 24. Discharge port; 3. Liquid tank; 31. Atomizing tube. Detailed Implementation
[0020] 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.
[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.
[0022] Combination Figures 1-4 This utility model discloses a vegetable seed coating device, which includes a mixing component 1 and a hot air drying box 2. One side of the hot air drying box 2 is connected to the mixing component 1. The mixing component 1 includes a collection cylinder 11 fixedly connected to the hot air drying box 2, an inner rotating cylinder 12 sleeved with the collection cylinder 11, and a drive motor 13. The drive motor 13 is mounted on the collection cylinder 11 and drives the inner rotating cylinder 12 to rotate. The collection cylinder 11 is used to collect excess pesticide.
[0023] Specifically, the collecting cylinder 11 is tilted, and both ends of the collecting cylinder 11 are provided with limit rings 111. The limit rings 111 are movably connected to the outer wall of the inner rotating cylinder 12. The outer wall of the inner rotating cylinder 12 is provided with a sliding groove 121 that matches the limit ring 111. Through the cooperation of the sliding groove 121 and the limit ring 111, the position of the inner rotating cylinder 12 can be fixed and the inner rotating cylinder 12 can be kept tilted. An external gear 122 is fixedly connected to the end of the inner rotating cylinder 12 away from the hot air drying box 2. The output end of the drive motor 13 is connected to a drive gear 131. The drive gear 131 meshes with the external gear 122. The drive motor 13 controls the rotation of the drive gear 131 and drives the external gear 122 to rotate, thereby realizing the rotation of the inner rotating cylinder 12 and tumbling the vegetable seeds inside.
[0024] More specifically, the inner rotating cylinder 12 is a hollow cylinder, allowing excess pesticide to leak out through the mesh of the inner rotating cylinder 12 and be collected by the collecting cylinder 11. The bottom of the collecting cylinder 11 is provided with a recycling pipe 112, and the bottom of the recycling pipe 112 is provided with a collecting box 113, so that excess pesticide can be recycled. The inner wall of the inner rotating cylinder 12 is provided with a spiral guide strip 123, which makes the seeds roll fully and improves the uniformity of coating. The inner wall of the inner rotating cylinder 12 is provided with an anti-stick coating to reduce seed and pesticide residue.
[0025] In addition, a medicine tank 3 is provided at the upper end of the hot air drying oven 2. An infusion pump is provided inside the medicine tank 3. The output end of the infusion pump is connected to an atomizing tube 31. The atomizing tube 31 is inserted from the inlet of the inner rotating cylinder 12. An atomizing nozzle is provided on the atomizing tube 31 for uniformly spraying the medicine into the inner rotating cylinder 12.
[0026] In this embodiment, a variable speed fan 21 is specially provided at the bottom of the hot air drying box 2 for drying vegetable seeds. The variable speed fan 21 sends irregular PWM signals through a microcontroller, such as an Arduino or PLC, so that the fan speed changes randomly or periodically. A heating wire array 22 is provided above the variable speed fan 21. The variable speed fan 21 blows the heat generated by the heating wire array 22 upward to dry the seeds falling into the hot air drying box 2. The hot air drying box 2 is not a sealed structure. The upper and lower ends of the hot air drying box 2 are provided with air inlets and air outlets.
[0027] It should be noted that the inner rotating cylinder 12 is connected to the hot air drying chamber 2. A swaying mesh 23 is movably connected to the hot air drying chamber 2 below the inner rotating cylinder 12. One end of the swaying mesh 23 is movably connected to the inner wall of the hot air drying chamber 2 via a short shaft, and the other end of the swaying mesh 23 is provided with a guide plate 231. The hot air drying chamber 2 is provided with a discharge port 24, and the guide plate 231 passes through the discharge port 24. The end of the swaying mesh 23 near the guide plate 231 is movably connected to the inner wall of the hot air drying chamber 2 via a limiting post 232 passing through it. The limiting post 232 is sleeved with the swaying mesh 23, and the limiting post 232 is positioned on the swaying mesh. A support spring 233 is fitted below the mesh 23. The entire shaking mesh 23 is set at an angle, and the guide plate 231 is located at the lowest end of the shaking mesh 23. Vegetable seeds that slide down from the inner rotating cylinder 12 fall onto the higher end of the shaking mesh 23. Under the action of the variable speed fan 21, the hot air rises at a variable speed and blows onto the shaking mesh 23. While drying the vegetable seeds, it also causes one end of the shaking mesh 23 to shake. With the support of the support spring 233, the lower end of the shaking mesh 23 swings up and down, and the vegetable seeds on the shaking mesh 23 are shaken apart and roll towards the guide plate 231. During the process, the hot air dries the vegetable seeds.
[0028] To improve the efficiency of vegetable seed extraction, a guide plate 234 is provided on the shaking net 23 near the extraction plate 231 to collect the vegetable seeds towards the extraction plate 231.
[0029] Working process: Vegetable seeds enter through the inlet of the inner rotating drum 12. The drive motor 13 drives the outer gear 122 to rotate via the drive gear 131, causing the inner rotating drum 12 to rotate. The infusion pump in the liquid tank 3 delivers the liquid to the atomizing tube 31, which sprays it evenly onto the seed surface through the atomizing nozzle. The spiral guide strips 123 on the inner wall of the inner rotating drum 12 cause the seeds to tumble continuously, improving the uniformity of coating. Excess liquid flows into the collection cylinder 11 through the perforated mesh of the inner rotating drum 12, and is collected in the collection box 113 via the recovery pipe 112 for recycling. The coated seeds slide onto the shaking net 23 in the hot air drying oven 2. The heating wire array 22 generates heat, and the variable speed fan 21 receives irregular PWM signals through the microcontroller, causing the wind speed to change randomly or periodically, forming a hot airflow that is sometimes fast and sometimes slow. The variable speed hot air blows upward, drying the seeds on one hand, and impacting the shaking net 23 on the other hand, causing it to shake at high frequency under the action of the support spring 233. This causes the seeds to disperse and roll along the inclined shaking net 23 towards the discharge plate 231. Under the shaking of the shaking net 23 and the guidance of the guide plate 234, the seeds are evenly dispersed and move towards the discharge port 24, and finally discharged through the discharge plate 231, completing the drying and collection.
[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A vegetable seed coating device, comprising a mixing component (1) and a hot air drying oven (2), characterized in that: One side of the hot air drying box (2) is connected to the mixing component (1). The mixing component (1) includes a collecting cylinder (11), an inner rotating cylinder (12), and a drive motor (13). One end of the collecting cylinder (11) is fixedly connected to the upper side of the hot air drying box (2). The inner rotating cylinder (12) passes through the collecting cylinder (11). The drive motor (13) is installed on the collecting cylinder (11) to drive the inner rotating cylinder (12) to rotate. A medicine tank (3) is provided on the hot air drying box (2). The medicine tank (3) sprays medicine into the inner rotating cylinder (12).
2. The vegetable seed coating equipment according to claim 1, characterized in that: The collection cylinder (11) is inclined and has limit rings (111) at both ends. The limit rings (111) are movably connected to the outer wall of the inner rotating cylinder (12). The collection cylinder (11) has a recovery pipe (112) at the bottom and a collection box (113) at the bottom.
3. The vegetable seed coating equipment according to claim 1, characterized in that: The outer wall of the inner rotating cylinder (12) is provided with a sliding groove (121) that matches the limiting ring (111). An external gear (122) is fixedly connected to one end of the inner rotating cylinder (12) away from the hot air drying box (2). A spiral guide strip (123) is provided on the inner wall of the inner rotating cylinder (12).
4. The vegetable seed coating equipment according to claim 3, characterized in that: The output end of the drive motor (13) is connected to a drive gear (131), which meshes with an external gear (122).
5. The vegetable seed coating equipment according to claim 1, characterized in that: The medicine tank (3) is equipped with an infusion pump, and the output end of the infusion pump is connected to an atomizing tube (31), which is equipped with an atomizing nozzle.
6. The vegetable seed coating equipment according to claim 1, characterized in that: The hot air drying box (2) is equipped with a variable speed fan (21) at the bottom and a heating wire array (22) above the variable speed fan (21).
7. The vegetable seed coating equipment according to claim 1, characterized in that: The hot air drying box (2) is movably connected to a shaking net (23), and a guide plate (231) is provided at the other end of the shaking net (23). The hot air drying box (2) is provided with a discharge port (24), and the guide plate (231) passes through the discharge port (24).
8. The vegetable seed coating equipment according to claim 7, characterized in that: The inner wall of the hot air drying box (2) is provided with a limiting post (232) that is sleeved with the shaking net (23). The limiting post (232) is positioned below the shaking net (23) and is sleeved with a support spring (233). The shaking net (23) is inclined as a whole, and the guide plate (231) is located at the lowest end of the shaking net (23). A guide plate (234) is provided on the shaking net (23) near the guide plate (231).
Citation Information
Patent Citations
Vegetable seed medicine coating equipment
CN218417226U