A seed coater

Abstract

The utility model relates to the technical field of seed processing equipment, and specifically relates to a seed coating machine, including the agitator box and hopper, the top fixedly connected with hopper of agitator box, and the inner wall fixedly connected with outer tube and inner tube of hopper, be connected with the blanking tube between outer tube and inner tube, the stirring subassembly, the stirring subassembly includes servo motor, and the output fixedly connected with main shaft of servo motor, the outer wall fixedly connected with auger and stirring paddle of main shaft. The utility model discloses through the setting of inner tube and outer tube, through the spiral rotation of auger inside inner tube, drive the seed inside hopper to move upwards, and form circular ring path falling between inner tube and outer tube, realize the even distribution of seed, cooperate the setting of circumferential shower nozzle in the process of seed falling, realize the spraying of seed surface medicine, avoid the excessive influence of seed accumulation to the uniformity of surface medicine spraying.

Description

Technical Field

[0001] This utility model relates to the technical field of seed processing equipment, specifically a seed coating machine. Background Technology

[0002] Seed coating is a high-tech method to promote increased agricultural production and harvest. It uses adhesives or film-forming agents to coat non-seed materials such as fungicides, insecticides, micronutrients, and plant growth regulators on the surface of the seed, forming a protective film. Seeds coated with seed coating agents can quickly absorb water and swell after sowing. As the embryo develops and the seedling grows, the active ingredients are slowly released and absorbed, playing a role in preventing and controlling seedling diseases and pests and promoting crop growth. Utility model patent CN220087898U discloses a seed coating machine. The machine has a guide cylinder fixedly connected to its upper surface. A dispersing motor is fixedly connected to the guide cylinder via a mounting bracket. A stirring shaft is fixedly connected to the output end of the dispersing motor. A spiral sleeve is fixedly connected to the outer surface of the stirring shaft. A guide hole is provided on the inner bottom side of the guide cylinder, and several ball bearings are rolled along the inner wall of the guide hole. This allows seeds to pass through the guide hole when introduced into the coating machine through the guide cylinder. The rotation of the stirring shaft and spiral sleeve pushes and disperses the clumps of seeds. The rubber spiral sleeve and the rolling ball bearings prevent damage to the seeds during dispersion.

[0003] When using this device for seed coating, the spiral sleeve pushes the seeds downwards to disperse clumps of seeds. However, the seeds still fall in a cylindrical shape, making it impossible for them to adhere evenly during the coating process, thus reducing the uniformity of the seed coating. Therefore, there is a need to design a seed coating machine that can efficiently achieve uniform seed coating. Utility Model Content

[0004] To address the above technical problems, this utility model provides a seed coating machine that can efficiently achieve uniform seed coating, thereby solving the problems of uneven seed coating and low coating efficiency in existing equipment.

[0005] To solve the above-mentioned technical problems, the present invention provides a seed coating machine, comprising a mixing chamber and a hopper. The hopper is fixedly connected to the top of the mixing chamber, and an outer cylinder and an inner cylinder are fixedly connected to the inner wall of the hopper. A discharge pipe is fixedly connected between the outer cylinder and the inner cylinder. A mixing assembly is also provided, comprising a servo motor fixedly connected to the top of the hopper, a main shaft fixedly connected to the output end of the servo motor, an auger fixedly connected to the upper part of the main shaft, and a stirring paddle fixedly connected to the lower part. The auger is located inside the inner cylinder, and the stirring paddle is located inside the mixing chamber. A dispersion pipe is provided at the lower end of the outer cylinder, and nozzles are distributed circumferentially on the dispersion pipe. A guide tube extending to the outside of the mixing chamber is fixedly connected to one side of the dispersion pipe.

[0006] Furthermore, the inner wall of the feed pipe and the inner wall of the hopper are on the same plane, the height of the inner cylinder is less than the height of the outer cylinder, and the outer wall of the hopper is integrally formed with a support ring, which is fixedly connected to the top of the mixing tank by a flange.

[0007] Furthermore, a positioning lug is fixedly connected to the outer circumference of the mixing tank, a discharge pipe is fixedly connected to the bottom of the mixing tank, and a flange ring adapted to the support ring is fixedly connected to the top of the mixing tank.

[0008] Furthermore, a sealing cover is fixedly connected to the top flange of the hopper, the servo motor is fixedly connected to the upper surface of the sealing cover, a feed pipe is connected above the sealing cover, and a protective cover is threaded to the end of the feed pipe.

[0009] Furthermore, the dispersion tube, outer cylinder, and inner cylinder are all coaxially distributed, and the diameter of the dispersion tube is larger than the outer diameter of the outer cylinder.

[0010] Furthermore, a positioning frame is fixedly connected to the outside of the dispersion tube, and the positioning frame is fixedly connected to the bottom of the hopper, with the nozzles distributed downwards at an angle.

[0011] This utility model has the following advantages compared with the prior art:

[0012] This invention utilizes an inner and outer cylinder setup. The spiral rotation of the auger inside the inner cylinder drives the seeds inside the hopper upwards, and they fall through a circular path formed between the inner and outer cylinders, achieving uniform seed distribution. Simultaneously, the arrangement of circumferentially distributed nozzles during seed descent allows for the spraying of a coating agent onto the seed surface, preventing excessive seed accumulation that could affect the uniformity of the coating. Furthermore, the rotation of the stirring paddle further agitates and mixes the sprayed seeds, further improving the uniformity and efficiency of seed coating. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 This is a schematic diagram of the axial cross-sectional structure of this utility model.

[0015] Figure 3 For the present utility model Figure 2 A magnified structural diagram of A in the diagram.

[0016] Figure 4 This is a schematic diagram of the nozzle distribution structure of this utility model.

[0017] In the diagram: 1. Mixing tank; 11. Positioning lug; 12. Discharge pipe; 2. Hopper; 21. Support ring; 22. Sealing cover; 23. Outer cylinder; 24. Inner cylinder; 25. Feed pipe; 3. Mixing assembly; 31. Servo motor; 32. Main shaft; 33. Screwdriver; 34. Mixing paddle; 4. Guide tube; 41. Dispersion tube; 42. Nozzle; 43. Positioning frame. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1-4 The seed coating machine shown includes a mixing chamber 1 and a hopper 2. The hopper 2 is fixedly connected to the top of the mixing chamber 1, and an outer cylinder 23 is fixedly connected to the inner wall of the hopper 2. The inner bottom wall of the hopper 2 slopes downward toward the outer cylinder 23. An inner cylinder 24 is disposed inside the outer cylinder 23. The bottom of the inner cylinder 24 is closed, and there is an opening between the outer wall of the inner cylinder 24 and the inner wall of the outer cylinder 23. The upper edge of the inner cylinder 24 is lower than the outer cylinder 23. The lower ends of the outer cylinder 23 and the inner cylinder 24 are fixedly connected by a feeding pipe 25. The end of the feeding pipe 25 is flush with the lower end of the hopper 2, and the feeding pipe 25 slopes downward toward the inner cylinder 24. The mixing assembly 3 includes a servo motor 31 fixedly connected to the top of the hopper 2 by bolts, and a main shaft 32 is fixedly connected to the output end of the servo motor 31. The main shaft 32 passes through the inner cylinder 24 and... Extending into the mixing tank 1, the main shaft 32 and the inner cylinder 24 are rotatably connected by bearings. An auger 33 is fixedly connected to the upper part of the main shaft 32 and is located in the inner cylinder 24. A stirring paddle 34 is fixedly connected to the lower part of the main shaft. A conduit 4 extends into the interior of the mixing tank 1 and is fixedly connected to a dispersion tube 41. Spray nozzles 42 are distributed circumferentially on the inner wall of the dispersion tube 41. The conduit 4 is used to connect with external reagent mixing equipment. A liquid pump is fixedly connected to the conduit 4. Through the cooperation of the outer cylinder 23 and the inner cylinder 24, the seeds fall downward through the two, forming a ring shape as they fall downward. This avoids the outer layer of seeds blocking the inner layer of seeds due to the cylindrical feeding. In conjunction with the spray nozzles 42, the seeds are sprayed with reagents as they fall in a ring.

[0020] To ensure that the seeds inside the hopper 2 can fall into the inner cylinder 24, the feed pipe 25 is set up to guide the seeds and achieve a rigid connection between the outer cylinder 23 and the inner cylinder 24. The inner wall of the feed pipe 25 is on the same plane as the inner wall of the hopper 2. The height of the inner cylinder 24 is less than the height of the outer cylinder 23. As the seeds inside the inner cylinder 24 are conveyed upward, the seeds can fall between the outer cylinder 23 and the inner cylinder 24 due to the decrease in the height of the inner cylinder 24. The outer wall of the hopper 2 is integrally formed with a support ring 21. The top of the mixing tank 1 is fixedly connected with a flange ring. The support ring 21 is connected to the flange ring by connecting bolts.

[0021] To provide auxiliary support for the mixing tank 1, the mixing tank 1 is fixedly connected to the positioning lugs 11 on the outer wall of the mixing tank 1, thereby achieving a suspended installation. Alternatively, a support column can be installed and fixed at the bottom of the positioning lugs 11, allowing the seeds to be discharged from the bottom discharge pipe 12 through the suspended installation of the mixing tank 1. The positioning lugs 11 are fixedly connected to the outer circumference of the mixing tank 1, and the discharge pipe 12 is fixedly connected to the bottom of the mixing tank 1, with a valve fixedly connected to the discharge pipe 12.

[0022] To ensure the safety of the top of the hopper 2 and prevent external objects from falling into its interior, a sealing cover 22 is installed on the top of the hopper 2 to improve the safety of seed storage inside the hopper 2. Simultaneously, in conjunction with the feed pipe, seeds can be added to the hopper 2 by connecting to an external feed pipe. The sealing cover 22 is fixedly connected to the top flange of the hopper 2, and a servo motor 31 is bolted to the upper surface of the sealing cover 22. A feed pipe is located above the sealing cover 22, and a protective cover is threaded onto the outside of the feed pipe.

[0023] To improve the uniformity of seed surface coating, the spray nozzles 42 are arranged in a ring around the seed during its descent. This allows for uniform coating of the seed surface through the spray nozzles 42. The initial spraying treatment during seed descent improves the uniformity and ease of seed coating. Combined with subsequent stirring, this enhances the uniformity and efficiency of seed coating and reduces the stirring time, thus achieving uniform seed coating. The dispersion tube 41, outer cylinder 23, and inner cylinder 24 are all coaxially distributed. The diameter of the dispersion tube 41 is larger than the outer diameter of the outer cylinder 23. The dispersion tube 41 is externally connected to a positioning frame 43, which is fixedly connected to the bottom of the hopper 2. The spray nozzles 42 are distributed downwards at an angle.

[0024] The working principle of this embodiment is as follows:

[0025] A suitable amount of seed raw materials are added into the hopper 2 through the feed pipe at the top of the sealing cover 22. The end of the conduit 4 is connected to the external agent supply pipe, so that the liquid medicine enters through the conduit 4 and is sprayed through the nozzle 42. The servo motor 31 is started and runs. When the servo motor 31 works, it drives the main shaft 32 to rotate, and at the same time drives the auger 33 and the stirring paddle 34 to rotate. While the auger 33 rotates, it can push the seeds that fall into the inner cylinder 24 upward until the seeds are pushed to the top of the inner cylinder 24 and fall between the outer cylinder 23 and the inner cylinder 24, so that the seeds fall in a ring. When the seeds fall into the nozzle 42, they are sprayed with the agent in conjunction with the spray of the nozzle 42 to achieve uniform spraying of the agent on the seed surface. After spraying, the seeds fall into the mixing tank 1, and the rotation of the stirring paddle 34 further mixes the seeds, so that the agent is evenly adhered to the seed surface.

Claims

1. A seed coating machine, comprising a mixing tank (1) and a hopper (2), wherein the hopper (2) is fixedly connected to the top of the mixing tank (1), characterized in that: The inner wall of the hopper (2) is fixedly connected to an outer cylinder (23) and an inner cylinder (24), and a discharge pipe (25) is fixedly connected between the outer cylinder (23) and the inner cylinder (24); a stirring assembly (3) is also provided, the stirring assembly (3) includes a servo motor (31) fixedly connected to the top of the hopper (2), the output end of the servo motor (31) is fixedly connected to a main shaft (32), the upper part of the main shaft (32) is fixedly connected to an auger (33), and the lower part is fixedly connected to a stirring paddle (34). The auger (33) is located inside the inner cylinder (24), and the stirring paddle (34) is located inside the mixing box (1); a dispersion pipe (41) is provided at the lower end of the outer cylinder (23), and nozzles (42) are distributed circumferentially on the dispersion pipe (41). A guide pipe (4) extending to the outside of the mixing box (1) is fixedly connected to one side of the dispersion pipe (41).

2. The seed coating machine according to claim 1, characterized in that: The inner wall of the feed pipe (25) is on the same plane as the inner wall of the hopper (2). The height of the inner cylinder (24) is less than the height of the outer cylinder (23). The outer wall of the hopper (2) is integrally formed with a support ring (21). The support ring (21) is fixedly connected to the top of the mixing tank (1) by a flange.

3. The seed coating machine according to claim 2, characterized in that: The outer wall of the mixing tank (1) is fixedly connected with a positioning lug (11), the bottom of the mixing tank (1) is fixedly connected with a discharge pipe (12), and the top of the mixing tank (1) is fixedly connected with a flange ring adapted to the support ring (21).

4. The seed coating machine according to claim 1, characterized in that: The top flange of the hopper (2) is fixedly connected to a sealing cover (22), the upper surface of the sealing cover (22) is fixedly connected to the servo motor (31), the upper part of the sealing cover (22) is connected to an inlet pipe, and the end of the inlet pipe is threadedly connected to a protective cover.

5. The seed coating machine according to claim 1, characterized in that: The dispersion tube (41), outer cylinder (23) and inner cylinder (24) are all coaxially distributed, and the diameter of the dispersion tube (41) is larger than the outer diameter of the outer cylinder (23).

6. The seed coating machine according to claim 5, characterized in that: The dispersion tube (41) is fixedly connected to a positioning frame (43), which is fixedly connected to the bottom of the hopper (2), and the nozzles (42) are distributed downward at an angle.

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