Impurity removing device for corn seed production

Abstract

The utility model relates to the technical field of corn seed production, and specifically discloses a corn seed production impurity removal device, which comprises a bottom plate and a dedusting box, an auxiliary feeding mechanism and a dedusting collection mechanism are arranged above the bottom plate, the auxiliary feeding mechanism comprises a frame body that is fixedly connected to the left end of the dedusting box in a penetrating mode, the frame body is arranged in an inclined mode and has an open structure on the right side, two transmission rollers are rotatably connected inside the frame body, and a conveying belt is arranged between the two transmission rollers; the inclined conveying belt facilitates the flow of seeds by gravity, replaces the traditional static gap feeding mode, avoids the problem of interrupted feeding caused by the static gap, effectively improves the continuous production efficiency, the airflow is filtered by filter cloth, the impurities are intercepted by the collection box, clean air is discharged, the impurity collection structure effectively collects impurities, prevents impurities from scattering to the surrounding environment to protect the working environment, and does not need to additionally arrange manual workers to clean the scattered impurities, thereby reducing the operation workload.

Description

Technical Field

[0001] This utility model relates to the field of corn seed production technology, and specifically discloses an impurity removal device for corn seed production. Background Technology

[0002] Corn seeds are the core material for the sexual reproduction of corn, directly determining the growth, yield, and quality of the corn crop. Cleanliness is a key quality indicator; if impurities such as straw fragments and weed seeds are present, it increases the risk of mold growth during storage and affects the uniformity of sowing. Therefore, impurity removal is a necessary step in corn seed production. Among these methods, air separation has become the mainstream impurity removal solution due to its low cost, ease of operation, and minimal risk of seed damage. Its principle is to utilize the mass difference between seeds and impurities, using airflow to deflect lighter impurities off their falling path, thus separating the two.

[0003] In existing technologies, the air separation and impurity removal of corn seeds is mostly accomplished using air separators. To avoid seed accumulation during air separation and ensure sufficient contact between the airflow and the seeds, air separators are often designed with a small gap at the feed inlet. By controlling the seed flow rate, the problem of incomplete impurity removal caused by accumulation is reduced, thereby improving the impurity removal effect. However, the feed inlet gap remains static during use, often resulting in interruptions in feeding. This requires frequent manual intervention with tools or manual manipulation to resume feeding, severely impacting continuous production efficiency. Furthermore, most existing air separators lack dedicated impurity collection structures, allowing lightweight impurities separated by the airflow to drift directly into the surrounding environment, causing air pollution, affecting the health of workers, and requiring additional manual cleaning of the scattered impurities.

[0004] Therefore, there is a need for an impurity removal device for corn seed production to solve the above problems. Utility Model Content

[0005] This utility model proposes an impurity removal device for corn seed production. By designing an auxiliary feeding mechanism, it avoids the problem of material interruption caused by static gaps, effectively improving continuous production efficiency. At the same time, by equipping an impurity collection structure to collect impurities, it prevents impurities from drifting into the surrounding environment to protect the working environment, and eliminates the need for additional manual cleaning of scattered impurities, reducing the workload.

[0006] This utility model is implemented as follows: a device for removing impurities in corn seed production includes a base plate and a removal box, with an auxiliary feeding mechanism and a removal and collection mechanism provided above the base plate. The auxiliary feeding mechanism includes a frame that is fixedly connected to the left end of the impurity removal box. The frame is inclined and has an open structure on the right side. Two transmission rollers are rotatably connected inside the frame. A conveyor belt is provided between the two transmission rollers. A drive motor with its output end fixedly connected to one of the transmission rollers is installed on the outer wall of the frame. A baffle is fixedly connected to the top of the inner wall of the frame. A feeding hopper is connected to the upper end of the frame. The impurity removal and collection mechanism includes an inclined plate fixedly connected between the front and rear ends of the inner wall of the impurity removal box. An impurity inlet is fixedly connected between the front and rear ends of the inner wall of the impurity removal box. A collection box is provided on the right side of the impurity removal box. A channel connects the collection box and the impurity inlet. A cylindrical cylinder is fixedly connected to the top of the inner wall of the collection box. A filter cloth is installed inside the cylindrical cylinder. A centrifugal fan with an air inlet connected to the cylindrical cylinder is installed at the top of the collection box. The impurity removal and collection mechanism also includes an auxiliary discharge mechanism.

[0007] As a preferred embodiment of the impurity removal device for corn seed production according to this utility model, the auxiliary discharge mechanism includes a discharge port extending through the right end of the collection box. A rectangular sealing ring located outside the discharge port is embedded in the right end of the collection box via a groove. An outlet block extending into the discharge port is fixedly connected inside the collection box. An L-shaped plate is fixedly connected to the right end of the collection box. A lead screw is rotatably connected between the L-shaped plate and the collection box. A connecting frame that slides with the L-shaped plate via a slide rail is threaded onto the outer wall of the lead screw. A sealing cover plate that abuts against the rectangular sealing ring is fixedly connected to the left end of the connecting frame. A drive frame is fixedly connected to the right end of the L-shaped plate. A worm gear is rotatably connected inside the drive frame. A worm wheel is meshed onto the outer wall of the worm gear. A transmission shaft is fixedly connected between the worm wheel and the lead screw. A handwheel extending to the outside of the drive frame is fixedly connected to one end of the worm gear.

[0008] As a preferred embodiment of the impurity removal device for corn seed production according to this utility model, a ventilation mesh plate is fixedly connected through the rear end of the impurity removal box.

[0009] As a preferred embodiment of the impurity removal device for corn seed production according to this utility model, a sealing strip with a clearance fit to the outer wall of the conveyor belt is fixedly connected to the left end of the inner wall of the frame.

[0010] As a preferred embodiment of the impurity removal device for corn seed production according to this utility model, the frame is rotatably connected to a plurality of support rollers, and the plurality of support rollers abut against the inner wall of the conveyor belt.

[0011] As a preferred embodiment of the impurity removal device for corn seed production according to this utility model, the impurity removal box is equipped with a guide frame whose four inner walls are all inclined, and the lower end of the impurity removal box is connected to a discharge port that communicates with the interior of the guide frame.

[0012] In a preferred embodiment of the impurity removal device for corn seed production according to this utility model, two support plates are fixedly connected to the lower end of the impurity removal box and the lower end of the collection box, and multiple support plates are fixedly connected to the base plate.

[0013] The beneficial effects of this utility model are: 1. After corn seeds are added through the hopper, the drive motor drives the transmission rollers to keep the conveyor belt running, transporting the seeds to the right. Baffles limit the height of seed accumulation, and the inclined conveyor belt relies on gravity to assist the flow of seeds, replacing the traditional static intermittent feeding method. This avoids the problem of material interruption caused by static gaps and effectively improves continuous production efficiency.

[0014] 2. As the seeds slide along the inclined plate, the centrifugal fan draws air through the ventilation mesh into the impurity removal box, drawing light impurities into the collection box via the inlet and channel. The filter cloth filters the airflow, trapping impurities in the collection box, while clean air is discharged. This impurity collection structure effectively collects impurities, preventing them from drifting into the surrounding environment and protecting the working environment. Furthermore, it eliminates the need for additional manual labor to clean up any scattered impurities, reducing workload. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a front cross-sectional view of the impurity removal device for corn seed production according to the present invention. Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a structural diagram of the inlet and channel of this utility model; Figure 4 This is a partial right view of the present invention; Figure 5 This is a partial front view of the present invention.

[0017] The markings in the diagram are: 1. Base plate; 2. Impurity removal box; 3. Frame; 4. Drive roller; 5. Conveyor belt; 6. Baffle; 7. Sealing strip; 8. Support roller; 9. Inclined plate; 10. Discharge port; 11. Guide frame; 12. Impurity inlet; 13. Collection box; 14. Channel; 15. Centrifugal fan; 16. Circular cylinder; 17. Filter cloth; 18. Outlet block; 19. Impurity discharge port; 20. Sealing cover plate; 21. Rectangular sealing ring; 22. L-shaped plate; 23. Lead screw; 24. Connecting frame; 25. Drive frame; 26. Worm gear; 27. Worm wheel; 28. Drive motor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0019] Please see Figure 1-5 An impurity removal device for corn seed production includes a base plate 1 and an impurity removal box 2. An auxiliary feeding mechanism and an impurity collection mechanism are provided above the base plate 1. The auxiliary feeding mechanism includes a frame 3 that is fixedly connected to the left end of the impurity removal box 2. The frame 3 is inclined and has an open structure on the right side. Two transmission rollers 4 are rotatably connected inside the frame 3. A conveyor belt 5 is provided between the two transmission rollers 4. A drive motor 28 with its output end fixedly connected to one of the transmission rollers 4 is installed on the outer wall of the frame 3. A baffle 6 is fixedly connected to the top of the inner wall of the frame 3. A feeding hopper is connected to the upper end of the frame 3. The impurity removal and collection mechanism includes an inclined plate 9 fixedly connected between the front and rear ends of the inner wall of the impurity removal box 2. An inlet 12 is fixedly connected between the front and rear ends of the inner wall of the impurity removal box 2. A collection box 13 is provided on the right side of the impurity removal box 2. A channel 14 connects the collection box 13 and the inlet 12. A cylindrical cylinder 16 is fixedly connected to the top of the inner wall of the collection box 13. A filter cloth 17 is installed inside the cylindrical cylinder 16. A centrifugal fan 15 with an air inlet connected to the cylindrical cylinder 16 is installed at the upper end of the collection box 13. The impurity removal and collection mechanism also includes an auxiliary discharge mechanism.

[0020] In this embodiment: First, the corn seeds to be processed are added through the feeding hopper at the top of the frame 3. Simultaneously, the drive motor 28 is started, and its output end drives the transmission roller 4 fixedly connected to it to rotate clockwise. With the cooperation of the two transmission rollers 4, the conveyor belt 5 rotates accordingly, conveying the seeds on the upper side of the conveyor belt 5 to the opening on the right side of the frame 3. At the same time, the baffle 6 at the top of the inner wall of the frame 3 can limit the accumulation height of the seeds on the conveyor belt 5, preventing seed accumulation. As the conveyor belt 5 rotates, the seeds are stably conveyed to the opening on the right side of the frame 3 and fall onto the inclined plate 9 inside the impurity removal box 2. Moreover, since the conveyor belt 5 is inclined, the seeds can slide to the right by gravity. Combined with the dynamic conveying effect of the conveyor belt 5, it replaces the traditional static intermittent feeding method, avoiding the problem of material interruption caused by static gaps, and effectively improving the continuous production efficiency.

[0021] After the seeds fall onto the inclined plate 9, they slide to the right along the inclined plate 9. Simultaneously, the centrifugal fan 15 at the top of the collection box 13 is activated. The centrifugal fan 15 draws air from the collection box 13 through the cylindrical tube 16. Outside air enters the impurity removal box 2 through the ventilation mesh and then enters the collection box 13 through the impurity inlet 12 and the channel 14. Under the action of the airflow, lighter impurities in the corn seeds are sucked into the impurity inlet 12 and enter the collection box 13 through the channel 14. The filter cloth 17 installed inside the cylindrical tube 16 filters the airflow entering the cylindrical tube 16, trapping impurities within the collection box 13, while the clean airflow is discharged through the centrifugal fan 15. This impurity collection structure effectively collects impurities, preventing them from drifting into the surrounding environment and protecting the working environment. Furthermore, it eliminates the need for additional manual labor to clean up scattered impurities, reducing the workload.

[0022] When impurities accumulate to a certain amount in the collection box 13, they can be smoothly discharged from the collection box 13 through the auxiliary discharge mechanism.

[0023] As a technical optimization of this utility model, the auxiliary discharge mechanism includes a discharge port 19 that runs through the right end of the collection box 13. A rectangular sealing ring 21 located outside the discharge port 19 is embedded in the right end of the collection box 13 through a groove. An outlet block 18 extending into the discharge port 19 is fixedly connected inside the collection box 13. An L-shaped plate 22 is fixedly connected to the right end of the collection box 13. A lead screw 23 is rotatably connected between the L-shaped plate 22 and the collection box 13. A connecting frame 24 that slides with the L-shaped plate 22 via a slide rail is threaded to the outer wall of the lead screw 23. A sealing cover plate 20 that abuts against the rectangular sealing ring 21 is fixedly connected to the left end of the connecting frame 24. A drive frame 25 is fixedly connected to the right end of the L-shaped plate 22. A worm gear 26 is rotatably connected inside the drive frame 25. A worm wheel 27 is meshed with the outer wall of the worm gear 26. A drive shaft is fixedly connected between the worm wheel 27 and the lead screw 23. A handwheel extending to the outside of the drive frame 25 is fixedly connected to one end of the worm gear 26.

[0024] In this embodiment: when impurities accumulate to a certain amount in the collection box 13, they can be cleaned by the auxiliary discharge mechanism. During operation, the handwheel outside the drive frame 25 is rotated, driving the worm gear 26 to rotate. The worm gear 26 meshes with the worm wheel 27, driving the lead screw 23 to rotate through the transmission shaft. The connecting bracket 24, which is threaded to the outer wall of the lead screw 23, moves to the right under the restriction of the slide rail, thereby causing the sealing cover plate 20 to separate from the rectangular sealing ring 21, releasing the seal and opening the discharge port 19. The guide block 18 fixed inside the collection box 13 extends into the discharge port 19, guiding the impurities to be discharged smoothly from the discharge port 19. After the discharge is completed, the handwheel is rotated in the opposite direction to make the sealing cover plate 20 re-abut against the rectangular sealing ring 21, thus sealing the discharge port 19.

[0025] As a technical optimization of this utility model, a ventilation mesh plate is fixedly connected through the rear end of the impurity removal box 2.

[0026] In this embodiment: by setting a ventilation mesh, outside air can be allowed to enter the interior of the impurity removal box 2, and seeds inside the impurity removal box 2 are prevented from splashing to the outside of the impurity removal box 2.

[0027] As a technical optimization of this utility model, a sealing strip 7 that is clearance-fitted with the outer wall of the conveyor belt 5 is fixedly connected to the left end of the inner wall of the frame 3.

[0028] In this embodiment: During the operation of the conveyor belt 5 to transport corn seeds, the sealing strip 7 maintains a gap fit with the outer wall of the conveyor belt 5, which can prevent the corn seeds on the conveyor belt 5 from leaking out from the gap between the left side of the frame 3 and the conveyor belt 5, ensuring that all the seeds can be transported to the opening on the right side of the frame 3 and fall into the impurity removal box 2.

[0029] As a technical optimization of this utility model, multiple support rollers 8 are rotatably connected inside the frame 3, and all the support rollers 8 abut against the inner wall of the conveyor belt 5.

[0030] In this embodiment: when the drive motor 28 drives the transmission roller 4 to make the conveyor belt 5 rotate and transport seeds, multiple support rollers 8 abut against the inner wall of the conveyor belt 5 to provide support for the conveyor belt 5 and prevent the conveyor belt 5 from sagging and deforming due to the weight of the seeds.

[0031] As a technical optimization of this utility model, the interior of the impurity removal box 2 is equipped with a guide frame 11 whose four inner walls are all inclined, and the lower end of the impurity removal box 2 is connected to a discharge port 10 that communicates with the interior of the guide frame 11.

[0032] In this embodiment: After the air separation and impurity removal is completed, the qualified corn seeds with larger mass slide down the inclined plate 9 into the guide frame 11. Since the four sides of the inner wall of the guide frame 11 are all inclined, the seeds can be guided to converge towards the center of the guide frame 11. The qualified seeds after convergence are discharged from the impurity removal box 2 through the discharge port 10 which is connected to the inside of the guide frame 11, which facilitates the subsequent centralized collection of qualified seeds.

[0033] As a technical optimization of this utility model, two support plates are fixedly connected to the lower end of the impurity removal box 2 and the lower end of the collection box 13, and multiple support plates are fixedly connected to the base plate 1.

[0034] In this embodiment, by setting multiple support plates, the impurity removal box 2 and the collection box 13 are provided with support and fixation.

[0035] The working principle and usage process of this utility model are as follows: First, the corn seeds to be processed are added through the feeding hopper at the upper end of the frame 3. At the same time, the drive motor 28 is started, and its output end drives the transmission roller 4 fixedly connected to it to rotate clockwise. With the cooperation of the two transmission rollers 4, the conveyor belt 5 rotates accordingly, conveying the seeds on the upper side of the conveyor belt 5 to the opening on the right side of the frame 3. Meanwhile, the baffle 6 at the top of the inner wall of the frame 3 can limit the accumulation height of the seeds on the conveyor belt 5, preventing seed accumulation. As the conveyor belt 5 rotates, the seeds are stably conveyed to the opening on the right side of the frame 3 and fall onto the inclined plate 9 inside the impurity removal box 2. Moreover, since the conveyor belt 5 is inclined, the seeds can slide to the right by gravity. Combined with the dynamic conveying effect of the conveyor belt 5, it replaces the traditional static intermittent feeding method, avoids the problem of material interruption caused by static gaps, and effectively improves continuous production efficiency.

[0036] After the seeds land on the inclined plate 9, they slide to the right along the inclined plate 9. At the same time, the centrifugal fan 15 at the top of the collection box 13 is activated. The centrifugal fan 15 draws air from the collection box 13 through the cylindrical tube 16. Outside air enters the impurity removal box 2 through the ventilation mesh and then enters the collection box 13 through the impurity inlet 12 and the channel 14. Under the action of the airflow, lighter impurities in the corn seeds are sucked into the impurity inlet 12 and enter the collection box 13 through the channel 14. The filter cloth 17 installed inside the cylindrical tube 16 filters the airflow entering the cylindrical tube 16, trapping the impurities in the collection box 13, while the clean airflow is discharged through the centrifugal fan 15. Meanwhile, the larger, qualified corn seeds are not affected by the strong airflow and continue to slide down the inclined plate 9 into the guide frame 11 inside the impurity removal box 2. The four sides of the inner wall of the guide frame 11 are all inclined, which guides the seeds to converge towards the center and finally discharge them through the discharge port 10 connected to the bottom of the impurity removal box 2. By equipping the device with this impurity collection structure, impurities can be effectively collected, preventing them from drifting into the surrounding environment and protecting the working environment. Furthermore, there is no need to arrange additional personnel to clean up the scattered impurities, thus reducing the workload.

[0037] When impurities accumulate to a certain amount in the collection box 13, they can be cleaned through the auxiliary discharge mechanism. During operation, the handwheel outside the drive frame 25 is turned to rotate the worm gear 26. The worm gear 26 meshes with the worm wheel 27, which in turn drives the lead screw 23 to rotate through the transmission shaft. The connecting bracket 24, which is threaded to the outer wall of the lead screw 23, moves to the right under the restriction of the slide rail, thereby causing the sealing cover plate 20 to separate from the rectangular sealing ring 21, releasing the seal and opening the discharge port 19. The guide block 18 fixed inside the collection box 13 extends into the discharge port 19, guiding the impurities to be discharged smoothly from the discharge port 19. After the discharge is completed, the handwheel is turned in the opposite direction to make the sealing cover plate 20 re-abut against the rectangular sealing ring 21, thus sealing the discharge port 19.

[0038] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An impurity removal device for corn seed production, comprising a base plate (1) and an impurity removal box (2), characterized in that: An auxiliary feeding mechanism and a waste removal and collection mechanism are provided above the base plate (1); The auxiliary feeding mechanism includes a frame (3) that is fixedly connected to the left end of the impurity removal box (2). The frame (3) is inclined and has an open structure on the right side. Two transmission rollers (4) are rotatably connected inside the frame (3). A conveyor belt (5) is provided between the two transmission rollers (4). A drive motor (28) with its output end fixedly connected to one of the transmission rollers (4) is installed on the outer wall of the frame (3). A baffle (6) is fixedly connected to the top of the inner wall of the frame (3). A feeding hopper is connected to the upper end of the frame (3). The impurity removal and collection mechanism includes an inclined plate (9) fixedly connected between the front and rear ends of the inner wall of the impurity removal box (2). An inlet (12) is fixedly connected between the front and rear ends of the inner wall of the impurity removal box (2). A collection box (13) is provided on the right side of the impurity removal box (2). A channel (14) is connected between the collection box (13) and the inlet (12). A circular cylinder (16) is fixedly connected to the top of the inner wall of the collection box (13). A filter cloth (17) is installed inside the circular cylinder (16). A centrifugal fan (15) with an air inlet connected to the circular cylinder (16) is installed at the upper end of the collection box (13). The impurity removal and collection mechanism also includes an auxiliary discharge mechanism.

2. The impurity removal device for corn seed production according to claim 1, characterized in that: The auxiliary discharge mechanism includes a discharge port (19) that extends through the right end of the collection box (13). A rectangular sealing ring (21) located outside the discharge port (19) is embedded in the right end of the collection box (13) through a groove. An outlet block (18) extending into the discharge port (19) is fixedly connected inside the collection box (13). An L-shaped plate (22) is fixedly connected to the right end of the collection box (13). A lead screw (23) is rotatably connected between the L-shaped plate (22) and the collection box (13). The outer wall of the lead screw (23) is threaded to the L-shaped plate. (22) A connecting frame (24) is slidably connected by a slide rail. The left end of the connecting frame (24) is fixedly connected to a sealing cover plate (20) that abuts against a rectangular sealing ring (21). The right end of the L-shaped plate (22) is fixedly connected to a drive frame (25). The drive frame (25) is rotatably connected to a worm gear (26). The outer wall of the worm gear (26) is meshed with a worm wheel (27). The worm wheel (27) is fixedly connected to a drive shaft between the worm wheel (27) and the lead screw (23). One end of the worm gear (26) is fixedly connected to a handwheel extending to the outside of the drive frame (25).

3. The impurity removal device for corn seed production according to claim 1, characterized in that: The rear end of the impurity removal box (2) is fixedly connected to a ventilation mesh plate.

4. The impurity removal device for corn seed production according to claim 1, characterized in that: The left end of the inner wall of the frame (3) is fixedly connected to a sealing strip (7) that is clearance-fitted with the outer wall of the conveyor belt (5).

5. The impurity removal device for corn seed production according to claim 1, characterized in that: The frame (3) is internally connected to a plurality of support rollers (8), and the plurality of support rollers (8) abut against the inner wall of the conveyor belt (5).

6. The impurity removal device for corn seed production according to claim 1, characterized in that: The impurity removal box (2) is equipped with a guide frame (11) whose four inner walls are all inclined. The lower end of the impurity removal box (2) is connected to a discharge port (10) that communicates with the interior of the guide frame (11).

7. The impurity removal device for corn seed production according to claim 1, characterized in that: The lower end of the impurity removal box (2) and the lower end of the collection box (13) are both fixedly connected to two support plates, and the multiple support plates are fixedly connected to the base plate (1).

Images