Quantitative seed subpackaging device
By employing a rotating insert feeding assembly and drive mechanism in the seed dispensing device, combined with an adjustable liner and flared structure, the problem of insufficient dispensing accuracy for lightweight seeds has been solved, achieving high-precision and stable seed dispensing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-07
AI Technical Summary
When existing seed dispensing devices rely on gravity sensors, the dispensing accuracy of lightweight seeds is insufficient, and they are easily affected by external interference, resulting in large quantity deviations. Furthermore, the aging and wear of gravity sensors affect the measurement accuracy, which cannot meet the high-precision requirements of modern agriculture and scientific research.
The system employs a rotating feeding assembly and drive mechanism embedded within the housing. Seeds are arranged in a single-row array via a trough on the liner, and a servo motor controls the orderly feeding of seeds in a fixed quantity. Combined with adjustable unit liners and a flared structure, this ensures smooth entry of seeds into the trough and reduces jamming.
It improves the accuracy and stability of seed packaging, ensures accurate packaging quantity each time, adapts to the packaging needs of different seeds, and meets the requirements of high-precision seed packaging.
Smart Images

Figure CN224090539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a seed quantitative dispensing device. Background Technology
[0002] In modern agriculture, the seed industry, and scientific breeding, seed quantitative dispensing technology plays an indispensable role. From an agricultural production perspective, precise seed dispensing is the foundation for standardized planting. Reasonable seed usage ensures uniform plant and row spacing during crop growth, allowing crops to fully access sunlight, water, and nutrients, thus improving crop yield, optimizing quality, and reducing resource waste and yield fluctuations caused by uneven sowing. In the seed industry, whether providing standardized seed packaging to different customer groups at the sales stage or classifying and storing seeds according to precise quantities, reliable seed quantitative dispensing technology is essential to ensure product consistency and traceability. In scientific breeding, precise seed dispensing is a prerequisite for conducting scientific experiments and variety comparisons. Only by ensuring the accurate quantity of seeds in each experimental sample can scientific and reliable experimental results be obtained. Therefore, developing efficient and precise seed quantitative dispensing devices has always been a key research direction in the industry, aiming to achieve accurate and rapid dispensing of seeds into various packaging units according to set quantities or qualities through the integration of mechanical and electronic technologies.
[0003] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:
[0004] Currently, many seed dispensing devices rely on gravity sensors to achieve quantitative dispensing. The basic principle of these devices is to indirectly determine the number of seeds by detecting the total weight of the seeds in the container. However, this weight-based quantitative method has significant drawbacks when dealing with individual, lightweight seeds. Because individual seeds are very small, the overall weight gradually accumulates as the number of seeds being dispensed increases. During the weighing process, external environmental factors such as airflow and minor equipment vibrations amplify the interference with the gravity sensor. These minute interferences can cause deviations in the weight data detected by the sensor when weighing a large number of lightweight seeds. Furthermore, the larger the overall weight of the seeds, the more pronounced these deviations become. The greater the deviation caused by interference factors, the more significant the deviation. For example, when dispensing tiny vegetable or flower seeds, the actual number of seeds dispensed may be more or less than 100 due to the aforementioned interference factors, with a deviation of up to 5%-10%. This is far from meeting the stringent requirements for seed dispensing accuracy in modern agriculture, scientific research, and other fields. Furthermore, the gravity sensor may experience a decrease in measurement accuracy due to aging and wear during long-term use, further affecting the accuracy of seed dispensing. This makes it impossible for the device to reliably and stably complete the precise dispensing task, limiting its application and promotion in high-precision seed dispensing scenarios.
[0005] Therefore, the aforementioned technical problems need to be solved. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, this utility model proposes a seed quantitative dispensing device, which solves the problems mentioned in the background art.
[0007] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:
[0008] A seed quantitative dispensing device includes a housing, a feeding assembly rotatably embedded within the housing, and a drive mechanism mounted on one side of the housing for moving the feeding assembly. The housing has inlets at its top and bottom for feeding and dispensing, respectively.
[0009] The feeding assembly includes a liner, the outer wall of which is provided with a plurality of material slots for accommodating a single row of seed material for coating. The plurality of material slots are arranged in a circular array and are all arranged along the axial direction of the liner. The inner wall of the liner is provided with two symmetrically distributed connecting members.
[0010] The drive mechanism includes a support plate welded to one side of the housing and a servo motor fixedly installed on the outer side of the support plate. The output end of the servo motor passes through the support plate and is coaxially fixedly connected to a shaft. The end of the shaft away from the servo motor is fixedly connected to a fixing plate. Both ends of the fixing plate are fixedly connected to two connecting parts by bolts.
[0011] Preferably, the liner includes several stacked unit liners, and each unit liner has two symmetrically distributed screws threaded onto its inner side. The outer wall of each unit liner has several U-shaped grooves for accommodating individual seed coats. The connector includes a mounting strip and a vertical plate welded to the mounting strip on the side away from the servo motor. The mounting strip has strip-shaped holes distributed along its length for the screws to pass through. The liner's stacked design allows for adjustment of the number of unit liners to control the quantity of seeds dispensed at one time, or for replacing unit liners with matching U-shaped grooves based on the size of the seeds. Each unit liner is fixedly connected by screws and the mounting strip to meet various seed packaging needs, enhancing the versatility and flexibility of the device.
[0012] Preferably, both sides of the openings of the U-shaped grooves are provided with flared structures. The flared structure design facilitates the smooth entry of seeds into the material trough, reduces seed jamming, and further ensures the smoothness of the dispensing process.
[0013] Preferably, the housing includes a first end plate and a second end plate arranged coaxially and parallel to each other, two symmetrically distributed arc-shaped panels vertically welded to the inner side of the first end plate, and a plurality of tie rods arranged in a ring array and assembled at the edge between the first end plate and the second end plate. The top and bottom of the two arc-shaped panels are respectively reserved with gaps for fitting and accommodating tube openings. Two fitting slots are provided on the second end plate for the arc-shaped panels to vertically move through. The housing provides a stable installation space for the blanking assembly. The design of the two arc-shaped panels and the two fitting slots allows the distance between the first end plate and the second end plate to be adjustable. Combined with the tie rods, it can accommodate the external encapsulation of different numbers of unit liner plates. Specifically, for the external encapsulation of different numbers of unit liner plates, different specifications of tube openings can be selected for corresponding replacement.
[0014] Preferably, the device also includes two mounting brackets welded to both sides of the outer surface of the first end plate for installation. The mounting brackets facilitate the installation and fixation of the device, improving its flexibility of use.
[0015] Preferably, the inner sides of both the first and second end plates are fitted with a plurality of needle rollers arranged in a circular array, and the inner sides of both the first and second end plates are covered with annular sealing plates, each with a plurality of windows for exposing the needle rollers. The needle rollers embedded in the inner sides of the first and second end plates, along with the covering of the annular sealing plates, provide good rotational support for the feeding assembly, reduce rotational friction, improve rotational stability, and ensure that the entire device can operate stably and accurately for a long period.
[0016] The beneficial effects of this utility model are:
[0017] The technical solution of this utility model, by setting a feeding component that is rotatably embedded in the housing, and cooperating with the material groove on the outer wall of the liner, can ensure that the seed for coating is arranged in a single row array, and with the help of the driving mechanism, the seeds are fed in an orderly manner in a fixed quantity, which greatly improves the packaging accuracy. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the material feeding assembly of this utility model;
[0020] Figure 3 This is a schematic diagram of the drive mechanism of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the shell of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the unit liner of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the first end plate of this utility model;
[0024] Explanation of reference numerals in the attached figures:
[0025] 100. Shell;
[0026] 110. First end plate; 120. Second end plate; 130. Arc panel; 140. Tie rod; 150. Adapter slot; 160. Assembly frame;
[0027] 1110. Needle roller; 1120. Circular sealing plate; 1130. Window;
[0028] 200. Material cutting assembly;
[0029] 210. Liner; 220. Feed trough; 230. Connecting piece;
[0030] 2110. Unit liner; 2120. Screws;
[0031] 2210, U-shaped groove; 2220, flared structure;
[0032] 2310, Mounting strip; 2320, Vertical plate; 2330, Strip-shaped hole;
[0033] 300. Drive mechanism;
[0034] 310. Support plate; 320. Servo motor; 330. Shaft; 340. Fixing plate; 350. Bolt;
[0035] 400, pipe opening. Detailed Implementation
[0036] 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.
[0037] Please see Figure 1-6 This utility model provides a technical solution: a seed quantitative dispensing device, including a housing 100 and a feeding assembly 200 rotatably embedded in the housing 100, and a drive mechanism 300 mounted on one side of the housing 100 for the feeding assembly 200 to move. The top and bottom of the housing 100 are provided with inlets 400 for feeding and dispensing, respectively. The feeding assembly 200 includes a liner 210, and the outer wall of the liner 210 is provided with a plurality of troughs 220 for accommodating a single row of coated seeds. The plurality of troughs 220 are arranged in a circular array and are uniformly distributed. Arranged along the axial direction of the bushing 210, the inner wall of the bushing 210 is provided with two symmetrically distributed connecting members 230. The drive mechanism 300 includes a support plate 310 welded to one side of the housing 100 and a servo motor 320 fixedly installed on the outer side of the support plate 310. The output end of the servo motor 320 passes through the support plate 310 and is coaxially fixedly connected to a shaft 330. A fixing plate 340 is fixedly connected to the end of the shaft 330 away from the servo motor 320. Both ends of the fixing plate 340 are fixedly connected to the two connecting members 230 respectively by bolts 350.
[0038] Based on the above structural configuration, the seed dispensing device comprises a housing 100, a feeding assembly 200, a drive mechanism 300, and two nozzles 400. The housing 100 provides structural support for the assembly of the feeding assembly 200 and the drive mechanism 300, while the drive mechanism 300 provides the driving force for the rotation of the feeding assembly 200. Specifically, during operation, when dispensing seeds, the seeds enter the device through the nozzles 400 at the top of the housing 100 and fall into the bushing 2 of the feeding assembly 200. The outer wall of the 10 has several material troughs 220 arranged in a ring array along the axial direction of the liner 210. These material troughs 220 can accommodate a single row of seeds for coating, ensuring that the seeds can be arranged in an orderly manner in the material troughs 220 without accumulation or jamming, laying the foundation for subsequent precise packaging. When the servo motor 320 is started, its output end drives the shaft 330 to rotate, which in turn drives the fixing plate 340 to rotate. The fixing plate 340 is then connected by bolts 350. The rotating connector 230 causes the bushing 210 to rotate as well. With the rotation of the bushing 210, the seed-filled troughs 220 rotate sequentially to the opening 400 at the bottom of the housing 100. When the troughs 220 reach the opening 400, the seeds inside automatically fall into the opening under gravity, completing one dispensing operation. Since the specifications of the troughs 220 are fixed, and the number of seeds each trough 220 can hold is also fixed, the servo motor controls the process. By controlling the rotation angle and speed of the servo motor 320, the number of rotations of the liner 210 and the number of times each material trough 220 reaches the discharge port 400 can be precisely controlled, thereby achieving orderly feeding according to a set quantity. This seed quantitative dispensing device, through the material feeding component 200 rotatably embedded in the housing 100, in conjunction with the material trough 220 on the outer wall of the liner 210, can ensure that the patina seeds are arranged in a single row array, and with the help of the drive mechanism 300, the seeds are fed in an orderly manner in a fixed quantity, which greatly improves the dispensing accuracy.
[0039] Furthermore, the liner 210 includes several stacked unit liners 2110, and each unit liner 2110 has two symmetrically distributed screws 2120 threaded on its inner side. The outer wall of the unit liner 2110 is provided with several U-shaped grooves 2210 for individual patina seeds to be fitted and accommodated. The connector 230 includes a mounting strip 2310 and a vertical plate 2320 welded to the side of the mounting strip 2310 away from the servo motor 320. The mounting strip 2310 is provided with strip-shaped holes 2330 distributed along its length for the screws 2120 to fit through.
[0040] Furthermore, flared structures 2220 are provided on both sides of the openings of several U-shaped grooves 2210.
[0041] Furthermore, the housing 100 includes a first end plate 110 and a second end plate 120 arranged coaxially and parallel, two symmetrically distributed arc panels 130 vertically welded to the inner side of the first end plate 110, and a number of pull screws 140 arranged in a ring array and assembled at the edge between the first end plate 110 and the second end plate 120. The top and bottom of the two arc panels 130 are respectively reserved with gaps for fitting and accommodating the pipe opening 400. Two fitting grooves 150 are provided on the second end plate 120 for the arc panels 130 to vertically move through.
[0042] Furthermore, it also includes two mounting brackets 160, which are welded to the outer sides of the first end plate 110 respectively for mounting.
[0043] Furthermore, the inner sides of the first end plate 110 and the second end plate 120 are each fitted with a plurality of rollers 1110 arranged in a ring array, and the inner sides of the first end plate 110 and the second end plate 120 are each covered with a ring sealing plate 1120, and the two ring sealing plates 1120 are each provided with a plurality of windows 1130 for exposing the rollers 1110.
[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A seed quantitative dispensing device, characterized in that: It includes a housing (100) and a feeding assembly (200) rotatably embedded in the housing (100), and a drive mechanism (300) mounted on one side of the housing (100) for the feeding assembly (200) to move. The top and bottom of the housing (100) are provided with ports (400) for feeding and discharging, respectively. The feeding assembly (200) includes a liner (210), and the outer wall of the liner (210) is provided with a plurality of material troughs (220) for accommodating a single row of seed sizing. The plurality of material troughs (220) are arranged in a ring array and are all arranged along the axial direction of the liner (210). The inner wall of the liner (210) is provided with two symmetrically distributed connectors (230). The drive mechanism (300) includes a support plate (310) welded to one side of the housing (100) and a servo motor (320) fixedly installed on the outer side of the support plate (310). The output end of the servo motor (320) passes through the support plate (310) and is coaxially fixedly connected to a shaft (330). A fixing plate (340) is fixedly connected to one end of the shaft (330) away from the servo motor (320). Both ends of the fixing plate (340) are fixedly connected to two connecting pieces (230) respectively by bolts (350).
2. The seed quantitative dispensing device according to claim 1, characterized in that: The liner (210) includes several stacked unit liner plates (2110), and each unit liner plate (2110) has two symmetrically distributed screws (2120) threaded on its inner side. The outer wall of the unit liner plate (2110) is provided with several U-shaped grooves (2210) for individual seed patina to be fitted and accommodated. The connector (230) includes a mounting strip (2310) and a vertical plate (2320) welded to the side of the mounting strip (2310) away from the servo motor (320). The mounting strip (2310) is provided with strip-shaped holes (2330) distributed along its length for the screws (2120) to fit through.
3. The seed quantitative dispensing device according to claim 2, characterized in that: The openings of several of the U-shaped grooves (2210) are provided with flared structures (2220) on both sides.
4. The seed quantitative dispensing device according to claim 1, characterized in that: The housing (100) includes a first end plate (110) and a second end plate (120) arranged coaxially and parallel, two arc-shaped panels (130) symmetrically distributed and vertically welded to the inner side of the first end plate (110), and a number of pull screws (140) arranged in a ring array and assembled at the edge between the first end plate (110) and the second end plate (120). The top and bottom of the two arc-shaped panels (130) are respectively reserved with gaps for fitting and accommodating the pipe opening (400). The second end plate (120) has two adapter slots (150) for the arc-shaped panels (130) to vertically move through.
5. A seed quantitative dispensing device according to claim 4, characterized in that: It also includes two mounting brackets (160) that are welded to the outer sides of the first end plate (110) for installation.
6. A seed quantitative dispensing device according to claim 4, characterized in that: The inner sides of the first end plate (110) and the second end plate (120) are each fitted with a plurality of roller needles (1110) arranged in a ring array, and the inner sides of the first end plate (110) and the second end plate (120) are each covered with a ring sealing plate (1120), and the two ring sealing plates (1120) are each provided with a plurality of windows (1130) for exposing the roller needles (1110).