A seed drum structure for a plug planter
By designing a positive pressure component and a collection trough in the seeding roller structure of the seed tray seeder, the problems of seed clogging and poor adsorption are solved, achieving effective seed sowing and collection and improving planting results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 保定凯若特农业科技有限公司
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-02
AI Technical Summary
The seeding rollers of existing tray seeders are prone to clogging during seed descent, resulting in poor seed adhesion and easy seed blowing off, leading to poor planting results and seed waste.
A seeding roller structure was designed, including a positive pressure component and a collection trough. Seeds are blown out by positive pressure air and adsorbed by negative pressure. Combined with the design of the collection trough, the active feeding and accurate collection of seeds can be achieved, preventing blockage and waste.
It achieves effective seed adsorption and accurate seed drop, avoiding roller clogging and seed waste, and improving planting efficiency.
Smart Images
Figure CN224306371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sowing technology, and more specifically to a sowing roller structure for a seed tray seeder. Background Technology
[0002] The seeding roller of a tray seeder is the core component of the tray seeder, mainly used to adsorb, transfer and release seeds to achieve precise sowing.
[0003] In the prior art, such as the pneumatic suction tray seeder disclosed in CN113767731A, a sowing device is provided, which includes a pressing mechanism and a seed-laying mechanism. The pressing mechanism is located in front of the seed-laying mechanism. The seed-laying mechanism includes a seed-guiding component, a seed-laying component, and a seed-collecting component. The seed-laying component includes a seed-laying roller and an air chamber plate arranged coaxially. The seed-laying roller has multiple axially penetrating seed-laying chambers evenly arranged circumferentially. Each seed-laying chamber has an exhaust hole along its length. On the end face of the air chamber plate, a negative pressure air chamber, a positive pressure air chamber, and a normal pressure air chamber are arranged sequentially circumferentially. One end of the seed-laying chamber is connected to the negative pressure air chamber, the positive pressure air chamber, and the normal pressure air chamber in sequence during one rotation cycle of the seed-laying roller. The corresponding other end of the seed-laying chamber is closed by an end cap. The seed-guiding component is located near the starting end of the negative pressure air chamber, and the seed-collecting component is located below the seed-guiding component and near the positive pressure air chamber. This invention can effectively solve the problems of suction hole blockage and unstable negative pressure during the sowing process.
[0004] The aforementioned device uses a single negative pressure to absorb seeds. Under negative pressure, the seeds adhere to the outer wall of the drum. Then, at a vertical point at the bottom of the drum, the pressure is reduced to a non-pressurized state, and the seeds are scraped off the outer wall of the drum by a scraper. In actual use, small-diameter seeds may get stuck in the holes of the drum. In the non-pressurized state, the seeds cannot slide down under the influence of gravity, nor can they be scraped off by the scraper. This causes the drum to become clogged, resulting in empty spaces for subsequent seed planting. At the same time, the air-blowing nozzles set at the upper diagonal of the drum spray air to blow off the excess seeds on the outer wall of the drum. In actual use, when there are gaps between the seeds and the drum, the negative pressure cannot firmly adhere the seeds. When the air blows off the excess seeds, it also blows off the unstable seeds, causing the seeds to scatter at the top of the device. This is not conducive to the recycling and reuse of seeds, resulting in insufficient planting effect and seed waste. Therefore, we propose a seeding drum structure for a seed tray seeder. Utility Model Content
[0005] One of the technical problems this application aims to solve is that the inability of seeds to fall independently leads to clogging of the roller, insufficient seed adsorption causes seeds to be blown away by air, and inconvenient seed recycling results in insufficient planting effect and seed waste.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A seeding roller structure for a tray seeder includes a lifting plate, a fixed shaft, two fixed rings, and a roller. The fixed shaft is located in the middle of the lifting plate. The two fixed rings are rotatably installed in the middle and at the front end of the fixed shaft, respectively. The roller is fixedly installed between the two fixed rings. A positive pressure component for blowing out seeds is provided at the lower part of the fixed shaft, and a seed collection component for collecting seeds is provided at the front end of the fixed shaft.
[0008] Preferably, the positive pressure component includes a mounting block disposed at the lower part of the fixed shaft, and a sealing plate is disposed at the lower part of the mounting block, wherein a sealing ring is disposed at the middle part of the lower sealing plate.
[0009] Preferably, the collecting component includes a mounting bracket disposed at the front end of the fixed shaft, a first collecting trough is movably mounted on the left side of the mounting bracket, the first collecting trough abuts against the left side of the roller, a material trough is disposed on the right side of the lifting plate, the left side of the material trough abuts against the right side of the roller, and a second collecting trough is disposed at the lower part of the mounting bracket, the left side of the second collecting trough abuts against the lower part of the roller.
[0010] Preferably, the shape of the left side of the material trough matches that of the roller, the inner wall of the material trough is inclined, the lower edge of the first collection trough is bent upward, the left side of the second collection trough is tangent to the lower part of the roller, a lifting component for driving the lifting plate to rise and fall is provided on the rear side of the lifting plate, and a driving component for driving the fixed ring to rotate is provided on the rear side of the lifting plate.
[0011] Preferably, the rear side of the mounting bracket and the lower part of the collection trough are each provided with two rollers that slide on the outer wall of the drum.
[0012] Preferably, the sealing ring is a closed ring surrounding the inner wall of the sealing plate, the sealing plate is a closed ring surrounding the lower part of the mounting block, and the sealing ring abuts against the inner wall of the roller.
[0013] Preferably, the lifting component includes two limiting blocks slidably connected to the rear side of the lifting plate, a fixing plate is provided on the rear side of the limiting blocks, a screw is rotatably connected to the upper part of the fixing plate, a handle is provided at the upper end of the screw, and the lower end of the screw is threadedly connected to the upper part of the lifting plate.
[0014] Preferably, the driving component includes a motor disposed on the rear side of the lifting plate, a second synchronous pulley is disposed on the driving end of the motor, a first synchronous pulley is disposed on the rear side of the fixed ring, and a synchronous belt is sleeved on the outer periphery of the first synchronous pulley and the second synchronous pulley.
[0015] Preferably, the front and rear sides of the lifting plate are provided with protective shells covering the outside of the driving component, and the protective shells are used to protect the driving component.
[0016] Preferably, a limiting ring is provided in the hole on the surface of the roller, and a plurality of evenly distributed friction plates are provided on the limiting ring near the outer wall of the roller, and a limiting plate is provided on the end of the limiting ring near the inner wall of the roller.
[0017] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a seeding roller structure for a tray seeder, which has the following beneficial effects:
[0018] 1. In this utility model, the positive pressure chamber is connected to positive pressure, and the roller is connected to negative pressure. When the driving component drives the roller to rotate, the negative pressure adsorbs the seeds through the holes to complete the feeding. When the seeds move to the lower part of the lower positive pressure component, the lower part of the positive pressure component blows out air to blow the seeds into the inside of the seed tray. The second collection trough assists in scooping off the blown-out seeds, thereby realizing the active feeding of seeds.
[0019] 2. The lower edge of the first collection trough of this utility model is bent upward. When the roller rotates counterclockwise, it can adsorb excess seeds and seeds that are not firmly adsorbed on the surface of the roller, ensuring the accuracy of adsorption. The second collection trough can receive seeds that fall from the material trough and the roller and assist in shoveling seeds. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the drive component structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the collection tank of this utility model;
[0024] Figure 4 This is a schematic diagram of the roller structure of this utility model;
[0025] Figure 5 This is a schematic diagram of the mounting block structure of this utility model;
[0026] Figure 6 This is a schematic diagram of the limiting block structure of this utility model;
[0027] Figure 7 This is a schematic diagram of the structure of Embodiment 4 of this utility model.
[0028] in:
[0029] 1. Lifting plate; 11. Fixed plate; 2. Fixed shaft; 3. Fixed ring; 4. Roller; 401. Restricting ring; 402. Friction plate; 403. Restricting plate; 41. Positive pressure component; 411. Mounting block; 412. Sealing plate; 413. Sealing ring; 5. Collecting component; 51. Mounting frame; 52. Collecting trough one; 53. Material trough; 54. Collecting trough two; 6. Protective shell; 7. Lifting component; 71. Rotary handle; 72. Screw; 73. Limiting block; 8. Driving component; 81. Synchronous pulley one; 82. Synchronous pulley two; 83. Synchronous belt; 84. Motor. Detailed Implementation
[0030] 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.
[0031] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a seeding roller structure for a seed tray seeder, including a lifting plate 1, a fixed shaft 2, two fixed rings 3 and a roller 4. The fixed shaft 2 is located in the middle of the lifting plate 1. The two fixed rings 3 are respectively rotatably installed in the middle and front end of the fixed shaft 2. The roller 4 is fixedly installed between the two fixed rings 3. A positive pressure component 41 for blowing out seeds is provided at the lower part of the fixed shaft 2, and a collection component 5 for collecting seeds is provided at the front end of the fixed shaft 2.
[0032] The lifting plate 1 and the fixed shaft 2 form the overall frame of the device, providing structural support for the entire device. The fixed shaft 2 provides rotational support for the fixed rings 3 and the roller 4. The two fixed rings 3 are fixedly installed at the front and rear ends of the roller 4, providing support for the rotation of the roller 4. The surface of the roller 4 is covered with rows of holes, and the number of holes in each row corresponds to the number of pits in each row of the seed tray. These holes can absorb seeds.
[0033] Furthermore, the positive pressure component 41 includes a mounting block 411 disposed at the lower part of the fixed shaft 2, and a sealing plate 412 disposed at the lower part of the mounting block 411, wherein a sealing ring 413 is disposed at the middle part of the lower sealing plate 412.
[0034] Two mounting blocks 411 are fixedly installed at the lower part of the fixed shaft 2 and can be combined with the sealing plate 412 to form an adsorption cavity. The sealing ring 413 is installed on the inner wall of the lower sealing plate 412 and can increase the sealing between the sealing plate 412 and the roller 4.
[0035] Furthermore, the collecting component 5 includes a mounting frame 51 located at the front end of the fixed shaft 2. A first collecting trough 52 is movably mounted on the left side of the mounting frame 51 and abuts against the left side of the roller 4. A material trough 53 is located on the right side of the lifting plate 1 and abuts against the right side of the roller 4. A second collecting trough 54 is located at the lower part of the mounting frame 51 and abuts against the lower part of the roller 4 on the left side.
[0036] Mounting bracket 51 provides mounting support for collection trough 1 52 and collection trough 2 54. Feed trough 53 is installed on the right side of lifting plate 1. When roller 4 operates, it rotates counter-clockwise. If too many seeds are adsorbed by a single hole on roller 4, and the seeds are not firmly adsorbed, the centrifugal force of the rotating roller 4 will cause the seeds to fall into collection trough 1 52 in advance, thus collecting the seeds and preventing waste or excessive transport to the lower part of roller 4. Collection trough 2 54 is horizontally positioned, with its left side tangent to the lower part of roller 4, which helps to scoop seeds from the surface of roller 4 into the pits of the seed tray. Positive pressure member 41 on the right side can blow seeds that have not fallen off the roller surface into the interior of collection trough 2 54, where it collects these seeds. The flat surface on the right side of collection trough 2 54 is used to hold seeds that fall between feed trough 53 and roller 4. Feed trough 53 provides temporary storage for seeds and serves as a storage component for feeding the device.
[0037] Furthermore, the shape of the left side of the material trough 53 matches that of the roller 4, the inner wall of the material trough 53 is inclined, the lower edge of the first collection trough 52 is bent upward, the left side of the second collection trough 54 is tangent to the lower part of the roller 4, the rear side of the lifting plate 1 is provided with a lifting component 7 for driving the lifting plate 1 to rise and fall, and the rear side of the lifting plate 1 is provided with a driving component 8 for driving the fixed ring 3 to rotate.
[0038] The left side of the feed trough 53 matches the curvature of the roller 4, which can prevent seeds from falling out of the gap between them to the greatest extent. The inclined surface of the inner wall of the feed trough 53 can allow the seeds to slide naturally downward under the action of gravity to the contact surface between the feed trough 53 and the roller 4. The lower edge of the collection trough 52 is bent to prevent the seeds stored inside the collection trough 52 from being vibrated and sliding out when the machine is working, and at the same time, it can fit more closely to the surface of the roller 4.
[0039] Furthermore, two rollers that slide on the outer wall of the roller 4 are provided on the rear side of the mounting bracket 51 and the lower part of the collection trough 52.
[0040] The rollers can support the rear of the mounting bracket 51 and also allow for some adjustment of the collection trough 52. Under the action of gravity, the collection trough 52 can automatically adhere to the outer wall of the roller 4. The rollers can prevent the collection trough 52 from directly scraping the outer wall of the roller 4, thus avoiding wear on the roller 4.
[0041] Furthermore, the sealing ring 413 is a closed ring surrounding the inner wall of the sealing plate 412, the sealing plate 412 is a closed ring surrounding the lower part of the mounting block 411, and the sealing ring 413 abuts against the inner wall of the roller 4.
[0042] The annular arrangement of the sealing plate 412 and the sealing ring 413 is intended to provide a good sealing environment and isolate the negative pressure environment inside the roller 4.
[0043] Positive pressure is connected in the chamber between mounting block 411 and sealing plate 412, allowing air to be blown into the interior of the chamber. Negative pressure is connected inside roller 4, allowing air to be drawn in and seeds to be adsorbed through the holes on the surface of roller 4. Roller 4 is driven by drive component 8 to rotate counterclockwise. As roller 4 rotates, seeds are adsorbed onto the holes on the surface of roller 4 by the internal negative pressure air. When roller 4 rotates, excess seeds that are not firmly adhered to the surface of roller 4 will fall into the inside of collection tank 52 under centrifugal force. As roller 4 continues to rotate, when the seeds are brought to the lower part of roller 4, the positive pressure component 41 at the bottom blows out positive pressure air, which causes the sealing ring 413 to move and fit. The inner wall of the roller 4 isolates the negative pressure inside the roller 4. The middle of the sealing plate 412 has a through hole from which positive pressure air can be blown out. When the roller 4 rotates to this position, the negative pressure adsorption force disappears, and the seeds fall into the pits of the seed tray under their own action and the blowing of the positive pressure air. Even if there are seeds that are stuck firmly, the part of the lower end of the collection trough 2 54 that is attached to the roller 4 can push the seeds away from the holes and let them fall into the pits of the seed tray. The roller 4 continues to rotate. When it reaches another positive pressure component 41, the positive pressure air blows and blows the seeds or impurities that are stuck firmly into the collection trough 2 54, cleaning the holes and collecting the seeds to avoid waste.
[0044] Example 2: Please refer to Figure 2 and Figure 6 The lifting component 7 includes two limiting blocks 73 slidably connected to the rear side of the lifting plate 1. A fixing plate 11 is provided on the rear side of the limiting blocks 73. A screw 72 is rotatably connected to the upper part of the fixing plate 11. A handle 71 is provided at the upper end of the screw 72. The lower end of the screw 72 is threadedly connected to the upper part of the lifting plate 1.
[0045] The rotation of the handle 71 drives the screw 72 to rotate, and the screw 72 can push the lifting plate 1 to move, thereby adjusting the height of the lifting plate 1 in real time and stably adjusting the working height of the roller 4. The limit block 73 can stabilize the position of the lifting plate 1 and prevent the lifting plate 1 from swaying back and forth in front of the fixed plate 11.
[0046] Example 3: Please refer to Figure 1 , Figure 2 and Figure 6 The driving component 8 includes a motor 84 located on the rear side of the lifting plate 1. The driving end of the motor 84 is provided with a second synchronous pulley 82, and the rear side of the rear fixing ring 3 is provided with a first synchronous pulley 81. The outer periphery of the first synchronous pulley 81 and the second synchronous pulley 82 is covered with a synchronous belt 83.
[0047] Furthermore, protective shells 6 are provided on both the front and rear sides of the lifting plate 1 to cover the outside of the driving component 8. The protective shells 6 are used to protect the driving component 8.
[0048] The protective shell 6 covers the outside of the drive component 8 and can isolate the danger. When the motor 84 starts, it drives the second synchronous pulley 82 to rotate. Through the transmission of the synchronous belt 83, it can drive the first synchronous pulley 81 and the fixed ring 3 to rotate, thereby driving the roller 4 to rotate. The toothed structure on the inner side of the synchronous belt 83 can provide stable power transmission.
[0049] Example 4: Please refer to Figure 7 Based on Embodiment 1, this utility model provides another technical solution: a limiting ring 401 is provided in the hole on the surface of the roller 4, a plurality of evenly distributed friction plates 402 are provided near the outer wall of the limiting ring 401, and a limiting plate 403 is provided at the end of the limiting ring 401 near the inner wall of the roller 4.
[0050] The limiting ring 401 and the friction plate 402 are made of nylon. When the seed is sucked into the inside of the limiting ring 401, the friction plate 402 can be stuck on the upper part of the seed to provide additional fixation. The limiting plate 403 can prevent the seed from sliding further into the inside of the roller 4.
[0051] 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.
[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A seeding roller structure for a tray seeder, comprising a lifting plate (1), a fixed shaft (2), two fixed rings (3), and a roller (4), characterized in that: The fixed shaft (2) is located in the middle of the lifting plate (1), and the two fixed rings (3) are rotatably installed in the middle and front end of the fixed shaft (2) respectively. The roller (4) is fixedly installed between the two fixed rings (3). The lower part of the fixed shaft (2) is provided with a positive pressure member (41) for blowing out seeds, and the front end of the fixed shaft (2) is provided with a collector (5) for collecting seeds.
2. The seed drum structure for a plug planter according to claim 1, wherein: The positive pressure component (41) includes a mounting block (411) disposed at the lower part of the fixed shaft (2), and a sealing plate (412) is disposed at the lower part of the mounting block (411), wherein a sealing ring (413) is disposed at the middle part of the lower sealing plate (412).
3. The seeding roller structure for a tray seeder according to claim 1, characterized in that: The collecting component (5) includes a mounting bracket (51) disposed at the front end of the fixed shaft (2). A first collecting groove (52) is movably mounted on the left side of the mounting bracket (51). The first collecting groove (52) abuts against the left side of the roller (4). A material trough (53) is disposed on the right side of the lifting plate (1). The left side of the material trough (53) abuts against the right side of the roller (4). A second collecting groove (54) is disposed at the lower part of the mounting bracket (51). The left side of the second collecting groove (54) abuts against the lower part of the roller (4).
4. The seeding roller structure for a tray seeder according to claim 3, characterized in that: The shape of the left side of the trough (53) matches that of the roller (4), and the inner wall of the trough (53) is inclined.
5. The seeding roller structure for a tray seeder according to claim 3, characterized in that: The lower edge of the first collection trough (52) is bent upwards, and the left side of the second collection trough (54) is tangent to the lower part of the roller (4).
6. The seeding roller structure for a tray seeder according to claim 1, characterized in that: The rear side of the lifting plate (1) is provided with a lifting component (7) for driving the lifting plate (1) to rise and fall, and the rear side of the lifting plate (1) is provided with a driving component (8) for driving the fixed ring (3) to rotate.
7. The seeding roller structure for a tray seeder according to claim 3, characterized in that: Two rollers that slide on the outer wall of the roller (4) are provided on the rear side of the mounting bracket (51) and the lower part of the collection trough (52).
8. The seeding roller structure for a tray seeder according to claim 2, characterized in that: The sealing ring (413) is a closed ring surrounding the inner wall of the sealing plate (412), the sealing plate (412) is a closed ring surrounding the lower part of the mounting block (411), and the sealing ring (413) abuts against the inner wall of the roller (4).
9. The seeding roller structure for a tray seeder according to claim 6, characterized in that: The lifting plate (1) is provided with protective shells (6) on both the front and rear sides, which cover the outside of the driving component (8). The protective shells (6) are used to protect the driving component (8).
10. The seeding roller structure for a tray seeder according to claim 1, characterized in that: A limiting ring (401) is provided in the hole on the surface of the roller (4). A plurality of evenly distributed friction plates (402) are provided on the limiting ring (401) near the outer wall of the roller (4). A limiting plate (403) is provided on the end of the limiting ring (401) near the inner wall of the roller (4).