Potato seed coating equipment
By designing the linkage and locking components of the potato seed coating equipment, the problem of impact force during seed potato discharge was solved, achieving stable discharge of seed potatoes and improving the survival rate and germination rate of seed potatoes.
Patent Information
- Application Number
- CN202520160299.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Traditional potato seed coating equipment has a height difference between the discharge port and the ground or receiving box, which causes impact force when the seed potatoes are discharged, easily leading to skin damage and bud damage, affecting seed potato quality and germination rate.
A potato seed coating device was designed. Through the linkage and locking components of the outer and inner semi-cylindrical shells, the material gradually accumulates in the receiving trolley, avoiding the impact force when the seed potatoes are discharged from a height. Combined with the clutch component to control the power transmission, the seed potatoes are stably discharged in the receiving trolley.
It effectively protects the integrity of seed potatoes, improves their survival and germination rates, and avoids damage during the discharge process.
Smart Images

Figure CN223829883U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural production equipment technology, specifically a potato seed coating device. Background Technology
[0002] Seed potatoes are propagated from tuberous plants. They are made by cutting potato tubers into square pieces, usually with one side covered by the seed coat and the other sides cut open. Seed pieces that are not coated are prone to rotting. Seed pieces that are coated and dried are used as seed potatoes.
[0003] In the prior art, such as in publication number CN220087893U, a potato seed coating machine is disclosed. It includes a mixing tank, with a first movable plate attached to the lower surface of the mixing tank. A second connecting plate is fixedly connected to the lower surface of the first movable plate, and the second connecting plate is rotatably connected to the mixing tank. In this seed coating machine, when the seed tubers are discharged after coating, firstly, pushing the handle causes the first connecting plate to deflect, resulting in the first movable plate fixedly connected to the upper surface of the first connecting plate moving horizontally. This horizontal movement of the first movable plate causes the second connecting plate to deflect. This structure effectively avoids the problem of insufficient coating of the seed tubers, achieving a thorough coating effect, improving the efficiency of collecting coated seed tubers, reducing collection time, and preventing the seed tubers from rotting due to insufficient coating during actual use, thus reducing production costs.
[0004] In the aforementioned patent, after the potato seed tubers are coated, the device immediately enters the feeding process. However, the discharge port of traditional coating equipment is often at a certain height from the ground or receiving box. When the potato seed tubers are discharged from the higher discharge port, the height difference will cause an impact force when the potato seed tubers come into contact with the ground or receiving box, which can easily lead to damage to the potato seed tuber skin and buds. This will not only affect the quality and germination rate of the seed tubers, but also easily lead to the infection of pests and diseases during subsequent storage and planting, thus bringing greater risks and losses to potato planting. Therefore, this utility model provides a potato seed tuber coating device. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a potato seed coating device, which solves the problem that the discharge port of traditional coating devices is often at a certain height from the ground or receiving box. When potato seed tubers are discharged from the higher discharge port, the height difference will cause an impact force when the potato seed tubers come into contact with the ground or receiving box, which can easily lead to damage to the potato seed tuber skin and buds.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a potato seed coating device, comprising:
[0007] An outer semi-cylindrical shell, wherein hollow shafts are provided at both ends of the outer semi-cylindrical shell along the axial direction;
[0008] An inner semi-cylindrical shell has rotating shafts at both ends along the axial direction. The opposing ends of the two rotating shafts are respectively away from the opposing ends of two hollow shafts. The rotating shafts can rotate freely while tightly attached to the inner wall of the hollow shafts. The inner semi-cylindrical shell can rotate relative to the inner wall of the outer semi-cylindrical shell through the rotating shafts. The inner semi-cylindrical shell can form a cylindrical body, an upward-opening semi-cylindrical body, or a downward-opening semi-cylindrical body by rotating relative to the outer semi-cylindrical shell. The cylindrical body is used for coating potato seed tubers, the upward-opening semi-cylindrical body is used for adding materials, and the downward-opening semi-cylindrical body is used for discharging materials.
[0009] A linkage component is disposed outside the hollow shaft on the right side, and the linkage component is used to drive the hollow shaft and the rotating shaft to rotate in opposite directions;
[0010] The locking component is located outside the linkage component. By connecting or separating the locking component from the linkage component, the hollow shaft and the rotating shaft are either in a relatively stationary state or the relatively stationary state is released.
[0011] The clutch assembly is located below the linkage assembly. It connects or disconnects with the linkage assembly, enabling the clutch assembly and the linkage assembly to transmit power or interrupt power.
[0012] Preferably, a circular plate is fixedly sleeved on the outer wall of the hollow shaft on the right side, and an internal gear ring is fixedly connected to the right end of the hollow shaft.
[0013] Preferably, a main shaft bracket is installed on the outer wall of both shafts, and the shaft can rotate freely relative to the main shaft bracket. A first motor is installed on the outer surface of one of the main shaft brackets to drive the shaft to rotate. A transmission gear is fixedly sleeved on the outer wall of the right shaft. The transmission gear is coaxial with the internal gear ring and on the same vertical plane, and the transmission gear is surrounded by the internal gear ring.
[0014] Preferably, the linkage assembly includes an L-shaped shaft portion, which includes a transverse block fixed between the circular plate and the outer wall of the internal gear ring, and a vertical block connected to the transverse block. The vertical block is located on the right side of the internal gear ring, and a connecting shaft is rotatably mounted on the vertical block. A linkage gear is fixedly connected to the left end of the connecting shaft. The linkage gear is located on the left side of the vertical block and between the internal gear ring and the transmission gear, and the linkage gear meshes with both the internal gear ring and the transmission gear. A driven gear is fixedly sleeved on the outer wall of the connecting shaft. The driven gear is located on the right side of the vertical block, and an arc block is fixedly connected to the right end of the connecting shaft.
[0015] Preferably, the locking assembly includes two first electric actuators, which are horizontally and symmetrically mounted on the left surface of the right main shaft frame. A limiting plate is connected between the telescopic ends of the two first electric actuators. The limiting plate is movably sleeved on the outer wall of the rotating shaft. An annular groove is provided at the left end of the limiting plate, and the annular surface inside the annular groove fits against the arc surface on the arc block to limit the rotational movement of the arc block around the connecting shaft.
[0016] Preferably, the clutch assembly includes a second electric actuator, which is vertically mounted on the left surface of the right main shaft bracket. A second motor is mounted on the telescopic end of the second electric actuator, and a drive gear is mounted on the output shaft of the second motor. The drive gear and the driven gear are on the same vertical plane and are used to transmit the power of the second motor to the driven gear.
[0017] Preferably, a receiving trolley is placed outside the outer and inner semi-cylindrical shells to receive coated potato seed potatoes.
[0018] Beneficial effects
[0019] This invention provides a potato seed coating device. Compared with the prior art, it has the following advantages:
[0020] (1) In the discharge stage of the potato seed coating equipment, when the outer semi-cylindrical shell and the inner semi-cylindrical shell are transformed from a cylindrical body to a semi-cylindrical tube with the opening facing downward, the material will gradually accumulate inside the receiving trolley. Since the inner bottom surface of the receiving trolley is close to the cylindrical tube, and the material inside the tube is very close to the inner bottom surface of the receiving trolley, the material is directly supported by the receiving trolley when it is discharged, which avoids the problem of potato seed skin damage and bud damage caused by the impact force generated by the height difference when the seed potatoes are discharged from the higher discharge port. It effectively protects the integrity of the seed potatoes and improves the survival rate and germination rate of the seed potatoes.
[0021] (2) In the process of coating the potato seed tuber, when the locking component and the linkage component are connected during the rotation of the cylinder, the linkage component will make a circular motion around the axis of rotation. When the linkage component makes a circular motion, the arc block will slide in the annular groove, which can ensure that the connecting shaft will not rotate around its own axis during the process of connecting the locking component and the linkage component, thus improving the stability of the relative fixed relationship between the hollow shaft and the circular plate. Attached Figure Description
[0022] Figure 1 This is a three-dimensional appearance schematic diagram of the present utility model;
[0023] Figure 2 This is a partial structural diagram of the present invention;
[0024] Figure 3This is a three-dimensional appearance schematic diagram of the clutch assembly of this utility model;
[0025] Figure 4 This is a three-dimensional appearance diagram of the linkage component of this utility model.
[0026] In the diagram: 1. Outer semi-cylindrical shell; 11. Hollow shaft; 12. Circular plate; 13. Internal gear ring; 2. Inner semi-cylindrical shell; 21. Rotating shaft; 22. Transmission gear; 3. Main shaft frame; 4. First motor; 5. Linkage assembly; 51. L-shaped shaft part; 52. Connecting shaft; 53. Linkage gear; 54. Driven gear; 55. Arc block; 6. Locking assembly; 61. First electric push rod; 62. Limiting plate; 63. Annular groove; 7. Clutch assembly; 71. Second electric push rod; 72. Second motor; 73. Drive gear; 8. Receiving trolley. Detailed Implementation
[0027] 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.
[0028] This utility model provides two technical solutions:
[0029] Figures 1-4 A first embodiment is shown: a potato seed coating device, comprising:
[0030] The outer semi-cylindrical shell 1 has hollow shafts 11 at both ends along the axial direction;
[0031] The inner semi-cylindrical shell 2 has a rotating shaft 21 at both ends along the axial direction. The opposite ends of the two rotating shafts 21 are far away from the opposite ends of the two hollow shafts 11. The rotating shafts 21 can rotate freely while closely attached to the inner wall of the hollow shafts 11. The inner semi-cylindrical shell 2 can rotate relative to the inner wall of the outer semi-cylindrical shell 1 through the rotating shafts 21. The inner semi-cylindrical shell 2 can form a cylindrical body, an upward-opening semi-cylindrical body, or a downward-opening semi-cylindrical body by rotating relative to the outer semi-cylindrical shell 1. The cylindrical body is used for coating potato seed tubers, the upward-opening semi-cylindrical body is used for adding materials, and the downward-opening semi-cylindrical body is used for discharging materials.
[0032] Linkage component 5 is located outside the hollow shaft 11 on the right side. Linkage component 5 is used to drive the hollow shaft 11 and the rotating shaft 21 to rotate in opposite directions.
[0033] The locking component 6 is located outside the linkage component 5. The locking component 6 is connected to or separated from the linkage component 5, so that the hollow shaft 11 and the rotating shaft 21 are in a relatively stationary state or the relatively stationary state is released.
[0034] The clutch assembly 7 is located below the linkage assembly 5. The clutch assembly 7 connects to or separates from the linkage assembly 5, enabling the clutch assembly 7 and the linkage assembly 5 to transmit power or interrupt power.
[0035] A circular plate 12 is fixedly sleeved on the outer wall of the hollow shaft 11 on the right side, and an internal gear ring 13 is fixedly connected to the right end of the hollow shaft 11.
[0036] Both rotating shafts 21 have a main shaft bracket 3 installed on their outer walls, and the rotating shafts 21 can rotate freely relative to the main shaft bracket 3. A first motor 4 is installed on the outer surface of one of the main shaft brackets 3 to drive the rotating shaft 21 to rotate. A transmission gear 22 is fixedly sleeved on the outer wall of the right rotating shaft 21. The transmission gear 22 is coaxial with the internal gear ring 13 and on the same vertical plane, and the transmission gear 22 is surrounded by the internal gear ring 13. The first motor 4 can drive the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 to rotate, thereby realizing the coating operation.
[0037] The linkage assembly 5 includes an L-shaped shaft portion 51. The L-shaped shaft portion 51 includes a transverse block fixed between the circular plate 12 and the outer wall of the internal gear ring 13, and a vertical block connected to the transverse block. The vertical block is located on the right side of the internal gear ring 13. A connecting shaft 52 is rotatably mounted on the vertical block. A linkage gear 53 is fixedly connected to the left end of the connecting shaft 52. The linkage gear 53 is located on the left side of the vertical block and between the internal gear ring 13 and the transmission gear 22. The linkage gear 53 meshes with the internal gear ring 13 and the transmission gear 22. A driven gear 54 is fixedly sleeved on the outer wall of the connecting shaft 52. The driven gear 54 is located on the right side of the vertical block. An arc block 55 is fixedly connected to the right end of the connecting shaft 52. Through the connecting shaft 52, the linkage gear 53, and the driven gear 54, the power source of the second motor 72 in the clutch assembly 7 can be effectively transmitted to the internal gear ring 13 and the transmission gear 22.
[0038] The locking assembly 6 includes two first electric actuators 61, which are horizontally and symmetrically mounted on the left surface of the right main shaft bracket 3. The telescopic ends of the two first electric actuators 61 are connected to a limiting disk 62. The limiting disk 62 is movably sleeved on the outer wall of the rotating shaft 21. An annular groove 63 is provided at the left end of the limiting disk 62, and the annular surface inside the annular groove 63 fits against the arc surface on the arc block 55. This is used to limit the rotational movement of the arc block 55 around the connecting shaft 52. The first electric actuators 61 cause the limiting disk 62 to move to the left or right, thereby allowing the annular groove 63 to engage or disengage from the arc block 55. When engaged, the connecting shaft 52 cannot rotate around its own axis. When disengaged, the connecting shaft 52 is allowed to rotate around its own axis.
[0039] The clutch assembly 7 includes a second electric actuator 71, which is vertically mounted on the left surface of the right main shaft bracket 3. A second motor 72 is mounted on the telescopic end of the second electric actuator 71, and a drive gear 73 is mounted on the output shaft of the second motor 72. The drive gear 73 and the driven gear 54 are on the same vertical plane, which is used to transmit the power of the second motor 72 to the driven gear 54. The second electric actuator 71 can drive the second motor 72 to rise and fall, thereby connecting or separating the clutch assembly 7 from the linkage assembly 5, realizing the transmission of power or the interruption of power, and coordinating power control in different operating stages of the equipment.
[0040] Figure 1 The second embodiment is shown. The main difference from the first embodiment is that a receiving trolley 8 is placed on the outside of the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 to receive the coated potato seed potatoes. The receiving trolley 8 can support the discharged seed potatoes and avoid damage to the potato seed potato skin and buds caused by the impact force due to the height difference. At the same time, the universal wheels at the bottom and the handle on the surface make it convenient to pull away directly after the discharge is completed.
[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0042] In its initial state, the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 cooperate to form an upward-opening semi-cylindrical body. The linkage component 5 is located directly below the rotating shaft 21. The locking component 6 is connected to the linkage component 5, and the clutch component 7 is separated from the locking component 6. When potato seed potatoes need to be coated, the prepared seed potatoes and coating powder are placed in the upward-opening semi-cylindrical body according to a certain ratio. Then, the second electric push rod 71 in the clutch component 7 extends, pushing the second motor 72 and the drive gear 73 upward, so that the drive gear 73 meshes with the driven gear 54. Next, the first electric push rod 61 in the locking component 6 retracts, driving the limiting plate 62 to move to the right, so that the annular groove 63 separates from the arc block 55. At this time, the arc block 55 is released from its limiting position. This allows the connecting shaft 52 to rotate around its own axis. Then, the second motor 72 starts, driving the drive gear 73 to rotate. Driven by the drive gear 73, it, in conjunction with the driven gear 54 and the connecting shaft 52, drives the linkage gear 53 to rotate. At this point, under the action of the linkage gear 53, the internal gear ring 13 rotates in the same direction as the linkage gear 53, and the transmission gear 22 rotates in the opposite direction to the linkage gear 53. Since the hollow shaft 11 is connected to the internal gear ring 13 via the circular plate 12, and the rotating shaft 21 is connected to the transmission gear 22, the rotation directions of the hollow shaft 11 and the rotating shaft 21 are opposite. This causes the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 to rotate relative to each other until the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 transform from their initial form into a cylindrical shell form. At this time, the seed potato and coating powder are placed inside the cylinder. Then, the locking component 6 is operated to move the limiting plate 62 to the left, which engages with the arc block 55 through the annular groove 63, preventing the connecting shaft 52 from rotating around its own axis. After that, the clutch component 7 is operated to move the driving gear 73 down and separate it from the driven gear 54. Then, the first motor 4 starts and drives the rotating shaft 21 to rotate. Since the linkage gear 53 cannot rotate under the action of the locking component 6, the internal gear ring 13 and the transmission gear 22 cannot rotate relative to the internal gear ring 13. That is, the hollow shaft 11 and the rotating shaft 21 are in a relatively static fixed connection relationship at this time. When the rotating shaft 21 rotates, the hollow shaft 11 rotates synchronously with the rotating shaft 21, thereby making the cylindrical body composed of the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2... The cylinder can rotate around the axis of the rotating shaft 21. The rotation of the cylinder causes the seed potatoes and coating powder inside to tumble continuously, allowing the coating powder to adhere to the surface of the seed potatoes, thus achieving the coating operation. During the coating process, because the L-shaped shaft 51 in the linkage component 5 is fixedly connected to the hollow shaft 11 via the circular plate 12, and the rotating shaft 21 and hollow shaft 11 rotate, the linkage component 5 will rotate around the axis of the rotating shaft 21. During this rotation, the arc block 55 slides in the annular groove 63, ensuring that the connecting shaft 52 does not rotate around its own axis during the connection between the locking component 6 and the linkage component 5. This improves the stability of the relatively fixed relationship between the hollow shaft 11 and the circular plate 12. After coating is completed, the first motor 4 stops.Position the linkage component 5 directly below the rotating shaft 21. Then, sequentially connect the clutch component 7 to the linkage component 5 and disengage the locking component 6 from the linkage component 5. The driving gear 73 then drives the driven gear 54 to rotate, which, in conjunction with the linkage gear 53, causes the hollow shaft 11 and the circular plate 12 to rotate in opposite directions. This causes the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 to rotate relative to each other until they transform from a cylindrical body to a semi-cylindrical shell with the opening facing downwards. Since the inner bottom surface of the receiving trolley 8 is close to the cylindrical shell, when the outer semi-cylindrical shell 1 and the inner semi-cylindrical shell 2 transform, they face downwards. The opening gradually increases in size, allowing material to accumulate inside the receiving trolley 8. The material inside the trolley is very close to its inner bottom surface. When the material is discharged, it is directly supported by the receiving trolley 8, thus preventing the seed potatoes from being damaged by impact when they come into contact with the ground or receiving box due to the height difference when discharged from a higher outlet. This avoids the problem of damaged seed potato skin and eyes. Because the top surface of the receiving trolley 8 is lower than the bottom surface of the downward-facing semi-cylindrical body, the receiving trolley 8 can be easily pulled away after discharge, making operation simple and convenient.
[0043] 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.
[0044] 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, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A potato seed coating device, characterized in that, include: The outer semi-cylindrical shell (1) has hollow shafts (11) at both ends along the axial direction. The inner semi-cylindrical shell (2) has a rotating shaft (21) at both ends along the axial direction. The opposite ends of the two rotating shafts (21) are far away from the opposite ends of the two hollow shafts (11). The rotating shaft (21) can rotate freely in close contact with the inner wall of the hollow shaft (11). The inner semi-cylindrical shell (2) can rotate relative to the inner wall of the outer semi-cylindrical shell (1) through the rotating shaft (21). The inner semi-cylindrical shell (2) can form a cylindrical body, an upward-opening semi-cylindrical body, or a downward-opening semi-cylindrical body by rotating relative to the outer semi-cylindrical shell (1). The cylindrical body is used for coating potato seed potatoes, the upward-opening semi-cylindrical body is used for adding materials, and the downward-opening semi-cylindrical body is used for discharging materials. The linkage component (5) is located outside the hollow shaft (11) on the right side. The linkage component (5) is used to drive the hollow shaft (11) and the rotating shaft (21) to rotate in opposite directions. The locking component (6) is located outside the linkage component (5). The locking component (6) is connected to or separated from the linkage component (5), so that the hollow shaft (11) and the rotating shaft (21) are in a relatively static state or the relatively static state is released. The clutch assembly (7) is located below the linkage assembly (5). The clutch assembly (7) is connected to or separated from the linkage assembly (5), so that the clutch assembly (7) and the linkage assembly (5) can transmit power or interrupt power.
2. The potato seed coating equipment according to claim 1, characterized in that: A circular plate (12) is fixedly sleeved on the outer wall of the hollow shaft (11) located on the right side, and an internal gear ring (13) is fixedly connected to the right end of the hollow shaft (11).
3. The potato seed coating equipment according to claim 2, characterized in that: Both of the rotating shafts (21) are equipped with a main shaft bracket (3) on their outer walls, and the rotating shaft (21) can rotate freely relative to the main shaft bracket (3). A first motor (4) is installed on the outer surface of one of the main shaft brackets (3) to drive the rotating shaft (21) to rotate. A transmission gear (22) is fixedly sleeved on the outer wall of the right rotating shaft (21). The transmission gear (22) is coaxial with the internal gear ring (13) and on the same vertical plane, and the transmission gear (22) is surrounded by the internal gear ring (13).
4. The potato seed coating equipment according to claim 3, characterized in that: The linkage assembly (5) includes an L-shaped shaft (51), which includes a transverse block fixed between the circular plate (12) and the outer wall of the internal gear ring (13), and a vertical block connected to the transverse block. The vertical block is located on the right side of the internal gear ring (13), and a connecting shaft (52) is rotatably mounted on the vertical block. A linkage gear (53) is fixedly connected to the left end of the connecting shaft (52). The linkage gear (53) is located on the left side of the vertical block and between the internal gear ring (13) and the transmission gear (22). The linkage gear (53) meshes with the internal gear ring (13) and the transmission gear (22). A driven gear (54) is fixedly sleeved on the outer wall of the connecting shaft (52). The driven gear (54) is located on the right side of the vertical block. An arc block (55) is fixedly connected to the right end of the connecting shaft (52).
5. The potato seed coating equipment according to claim 4, characterized in that: The locking assembly (6) includes two first electric actuators (61). The two first electric actuators (61) are horizontally and symmetrically installed on the left surface of the right main shaft frame (3). The extension and retraction ends of the two first electric actuators (61) are connected to a limiting disk (62). The limiting disk (62) is movably sleeved on the outer wall of the rotating shaft (21). The left end of the limiting disk (62) is provided with an annular groove (63), and the annular surface inside the annular groove (63) fits against the arc surface on the arc block (55) to limit the rotational movement of the arc block (55) with the connecting shaft (52) as the axis.
6. The potato seed coating equipment according to claim 4, characterized in that: The clutch assembly (7) includes a second electric actuator (71), which is vertically mounted on the left surface of the right main shaft bracket (3). A second motor (72) is mounted on the telescopic end of the second electric actuator (71), and a drive gear (73) is mounted on the output shaft of the second motor (72). The drive gear (73) and the driven gear (54) are on the same vertical plane and are used to transmit the power of the second motor (72) to the driven gear (54).
7. The potato seed coating equipment according to claim 1, characterized in that: A receiving trolley (8) is placed outside the outer semi-cylindrical shell (1) and the inner semi-cylindrical shell (2) to receive coated potato seed potatoes.
Citation Information
Patent Citations
Potato seed coating machine
CN220087893U