Screening and impurity removing device for corn seed production
By designing an easy-to-disassemble screen plate connection structure and collection components, the problems of difficult-to-clean screen plates and impurity residue in screening and impurity removal devices are solved, thus achieving efficient screening and impurity removal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN FENGDA SEED IND CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Existing screening and impurity removal devices are not easy to disassemble and clean between the sieve plates, and small impurities and debris can easily pass through the filter holes and remain in the smallest coated corn seeds.
A screening and impurity removal device was designed, which includes a hollow base, multiple sieve discs and a collection component. The sieve discs are easy to disassemble by connecting the arc-shaped inserts and reinforcing blocks. Small impurities are sucked into the dust storage box by a dust pump and a dust extraction pipe to avoid impurity residue.
It enables easy disassembly and cleaning of the sieve disc, effectively removes small impurities, ensures screening results, and reduces the residue of impurities in the seeds.
Smart Images
Figure CN224272115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of screening and impurity removal devices, and in particular to a screening and impurity removal device for corn seed production. Background Technology
[0002] During corn seed production, a coating is applied to the surface of the corn seeds to prevent pests and diseases. After coating, the corn seeds are usually sorted by size using a screening and impurity removal device.
[0003] Currently, when screening and removing impurities from coated corn seeds, it is inconvenient to disassemble and clean the various sieve plates, and small impurities and debris can pass through the filter holes and remain in the smallest coated corn seeds.
[0004] To address the aforementioned problems, this utility model document proposes a screening and impurity removal device for corn seed production. Utility Model Content
[0005] This invention provides a screening and impurity removal device for corn seed production, which solves the shortcomings of the prior art, such as the inconvenience of disassembling and cleaning the various screen plates, and the fact that small impurities and debris can pass through the filter holes and remain in the smallest coated corn seeds.
[0006] This utility model provides the following technical solution:
[0007] A screening and impurity removal device for corn seed production includes:
[0008] The hollow base has multiple reinforcing holes arranged in a circular array at its bottom for reinforcement to the ground via bolts. Three screen discs are arranged sequentially above the hollow base. The side walls of the screen discs are connected to downward-facing discharge nozzles. The upper screen disc is connected to the lower screen disc via two arc-shaped inserts fixed at its bottom and two arc-shaped slots at its top. Two reinforcing blocks are symmetrically welded to the outer walls of the screen discs. The reinforcing blocks on adjacent screen discs are vertically aligned and reinforced with bolts and nuts.
[0009] The top of the uppermost sieve disc is fixed with a top cover by bolts. The top of the top cover is connected to a conical feeding hopper and a dust extraction pipe to prevent too much coated corn seeds from entering. The other end of the dust extraction pipe is equipped with a collection component for collecting small impurities and debris.
[0010] In one possible design, the bottom of the top and middle screen trays are screens of different densities, the bottom of the bottom screen tray is a smooth steel plate, and a vibration motor is bolted to the center of the bottom of the bottom screen tray.
[0011] In one possible design, multiple damping springs are arranged in a circular array between the bottommost screen plate and the hollow base, and the spring seats at both ends of the damping springs are fixedly connected to the bottom of the bottommost screen plate and the top of the hollow base by bolts.
[0012] In one possible design, a cover is rotatably mounted on the top of the conical feeding hopper via a hinge. The cover is fixed to the conical feeding hopper by two fasteners. A hook is fixedly provided on the side wall of the cover, and a handle that cooperates with the corresponding hook is fixedly provided on the outer wall of the conical feeding hopper.
[0013] In one possible design, the collection assembly includes a dust pump whose input end is connected to the other end of a dust extraction pipe, a filter screen embedded in the suction end of the dust extraction pipe to prevent coated corn seeds from entering the pipe, a dust conveying pipe whose output end is connected to the dust pump, and a dust storage box whose other end is connected to the dust conveying pipe.
[0014] In one possible design, a lid is snapped onto the top opening of the dust collection box, and an exhaust port is provided in the center of the lid, with a corresponding filter screen embedded in the exhaust port.
[0015] In one possible design, the uppermost and middle discharge nozzle input ends are embedded with screens of the same density as the corresponding screen discs.
[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.
[0017] The working principle and usage process of this technical solution are as follows:
[0018] When preparing the device, fix the hollow base to the ground with bolts and reinforcement holes. Then connect the bottom screen plate to the hollow base with a damping spring and fix the spring seat with bolts. Then install the other two screen plates in sequence, so that the arc-shaped insert of the upper screen plate is inserted into the arc-shaped slot of the lower screen plate. Then align the reinforcement blocks on the adjacent screen plates vertically and reinforce them with bolts and nuts. Fix the top cover to the top of the uppermost screen plate with bolts and connect the power supply of the vibration motor and the dust pump.
[0019] In use, start the dust pump and vibration motor, open the top cover of the conical feeding hopper, and add the coated corn seeds into the uppermost sieve tray through the conical feeding hopper. After adding, fix the cover to the conical feeding hopper with fasteners. The dust pump sucks small impurities and debris into the collection component through the dust extraction pipe. The small impurities and debris enter the dust storage box through the dust conveying pipe. Air is discharged through the filter screen of the exhaust port on the box cover. At the same time, the vibration motor drives the sieve tray to vibrate. The coated corn seeds vibrate in the sieve tray and are screened through sieves of different densities. Large particles of impurities remain in the uppermost sieve tray and are discharged through the outlet of this layer. Medium-sized seeds are screened through the sieve of the middle sieve tray and are discharged through the outlet of this layer. Small particles of seeds enter the lowermost sieve tray and are discharged through the outlet of this layer. When cleaning the device, remove the bolts and nuts of the reinforcing blocks between adjacent sieve trays to separate the sieve trays for cleaning.
[0020] This utility model has the following beneficial effects:
[0021] In this invention, the screen discs are connected by arc-shaped inserts and arc-shaped slots, and reinforced by bolts and nuts with reinforcing blocks. This connection method makes it easy to disassemble the screen discs and facilitates cleaning and maintenance of the screen discs and screens.
[0022] This invention incorporates a collection component that uses a dust pump and a dust extraction pipe to draw small impurities and debris into a dust storage box, preventing these small impurities and debris from passing through the filter holes and remaining in the smallest coated corn seeds.
[0023] In this invention, multiple damping springs are installed between the bottom sieve disc and the hollow base, and the hollow base is fixed to the ground by bolts and reinforcing holes, which can reduce the transmission of vibration to the ground. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the main structure of a screening and impurity removal device for corn seed production provided in an embodiment of the present invention;
[0025] Figure 2 This is a side cross-sectional view of a screening and impurity removal device for corn seed production provided in an embodiment of the present invention;
[0026] Figure 3 This is an enlarged structural diagram of part A of a screening and impurity removal device for corn seed production provided in an embodiment of the present invention;
[0027] Figure 4 This is an enlarged structural diagram of part B of a screening and impurity removal device for corn seed production provided in an embodiment of the present invention.
[0028] Reference numerals in the attached diagram: 1. Hollow base; 2. Screen tray; 3. Vibrating motor; 4. Discharge nozzle; 5. Reinforcing block; 6. Damping spring; 7. Reinforcing hole; 8. Arc-shaped insert; 9. Arc-shaped slot; 10. Top cover; 11. Conical feeding hopper; 12. Cover; 13. Fastener; 14. Dust pump; 15. Dust storage box; 16. Dust extraction pipe; 17. Dust conveying pipe; 18. Box cover. Detailed Implementation
[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0032] Example 1
[0033] Please refer to Figure 1-4 A screening and impurity removal device, comprising:
[0034] Hollow base 1, with multiple reinforcing holes arranged in a ring at the bottom. Bolts are used to reinforce the hollow base 1 to the ground. Three screen plates 2 are arranged in sequence above the hollow base 1. The side wall of the screen plate 2 is connected to a downward-facing discharge nozzle 4. Two reinforcing blocks 5 are symmetrically welded to the outer wall of the screen plate 2. When installing the screen plates 2, the bottom screen plate 2 is placed in a suitable position first. The bottom of the bottom screen plate 2 is a smooth Q235 steel plate, and a vibration motor 3 is installed in the center of it by bolts. Then, multiple damping springs 6 are arranged in a ring between the bottom screen plate 2 and the hollow base 1. The spring seats at both ends of the damping springs 6 are fixedly connected to the bottom of the bottom screen plate 2 and the top of the hollow base 1 by bolts respectively. The free height of the damping springs 6 is 200mm (compressed to 188-192mm after installation, with 8-12mm working stroke reserved), and its stiffness coefficient (k value) is 125N / mm.
[0035] Next, install the intermediate screen plate 2. The bottom of the intermediate screen plate 2 has a 12-mesh screen. Align the two arc-shaped inserts 8 at the bottom of the intermediate screen plate 2 with the two arc-shaped slots 9 at the top of the bottom screen plate 2, so that the arc-shaped inserts 8 are inserted into the arc-shaped slots 9, thus achieving the initial connection between the intermediate screen plate 2 and the bottom screen plate 2. Then, reinforce the vertically aligned reinforcing blocks 5 on the intermediate screen plate 2 and the bottom screen plate 2 with bolts and nuts. The ends of the bolts pass through the through holes on the two reinforcing blocks 5 and are threaded into the nuts to ensure a stable connection. Then, install the top screen plate 2. The bottom of the top screen plate 2 has an 8-mesh screen. Similarly, insert the arc-shaped inserts 8 at the bottom of the top screen plate 2 into the arc-shaped slots 9 at the top of the intermediate screen plate 2. Then, reinforce the vertically aligned reinforcing blocks 5 on the top screen plate 2 and the intermediate screen plate 2 with bolts and nuts.
[0036] The top cover 10 is fixed to the top of the uppermost screen plate 2 by bolts. The top of the top cover 10 is connected to the conical feeding hopper 11 and the dust extraction pipe 16. The other end of the dust extraction pipe 16 is equipped with a collection component, which includes a dust pump 14 whose input end is connected to the other end of the dust extraction pipe 16. The dust pump 14 is an industrial-grade vortex air pump. The pump body is made of 316L stainless steel casting to enhance chemical corrosion resistance. The impeller is made of high chromium alloy steel (Cr26) with a hardness of HRC58-62 to improve wear resistance and adapt to long-term high-speed rotation conditions. The impeller edge is inlaid with tungsten carbide (WC) wear-resistant strips to further reduce edge wear. The shaft seal is a fluororubber (FKM) skeleton oil seal with a double lip structure to prevent dust from entering the bearing cavity.
[0037] A filter screen is embedded in the suction end of the dust extraction pipe 16 to prevent coated corn seeds from entering the pipe. The output end of the dust extraction pump 14 is connected to the dust conveying pipe 17, and the other end of the dust conveying pipe 17 is connected to the dust storage box 15. The top opening of the dust storage box 15 is secured with a box cover 18. An exhaust port is provided in the center of the box cover 18, and a corresponding filter screen is embedded in the exhaust port to prevent small impurities and debris from being discharged directly from the exhaust port. The input ends of the top and middle discharge nozzles 4 are embedded with a screen with the same density as the corresponding screen plate 2 to prevent coated corn seeds that do not meet the size requirements from being discharged from the discharge nozzles 4.
[0038] In use, start the dust pump 14 and the vibration motor 3, open the cover 12 on the top of the conical feeding hopper 11, and add the coated corn seeds into the uppermost sieve plate 2 through the conical feeding hopper 11. The dust pump 14 sucks small impurities and debris into the collection component through the dust extraction pipe 16. The small impurities and debris enter the dust storage box 15 through the dust conveying pipe 17. The air is discharged through the filter screen of the exhaust port on the box cover 18. At the same time, the vibration motor 3 drives the sieve plate 2 to vibrate. The coated corn seeds vibrate in the sieve plate 2 and are screened through sieves of different densities. Large particles of impurities remain in the uppermost sieve plate 2 and are discharged through the discharge nozzle 4 of this layer. Medium-sized seeds are screened through the sieve screen of the middle sieve plate 2 and remain in the middle sieve plate 2 and are discharged through the discharge nozzle 4 of this layer. Small particles of seeds enter the lowermost sieve plate 2 and are discharged through the discharge nozzle 4 of this layer. When cleaning the device, remove the bolts and nuts of the reinforcing blocks 5 between adjacent sieve plates 2 to separate the sieve plates 2 for cleaning of the sieve plates 2 and the sieve screens.
[0039] This application can be used for corn seed production, or for other fields applicable to this application.
[0040] Example 2
[0041] Improvements based on Example 1:
[0042] A screening and impurity removal device for corn seed production, which is used in the field of screening and impurity removal devices;
[0043] Please refer to Figure 2-3 The top of the conical feeding hopper 11 is fitted with a cover 12 via a hinge. The cover 12 and the conical feeding hopper 11 are fixed together by two fasteners 13. Hooks are fixedly installed on the side wall of the cover 12, and a handle that works with the corresponding hooks is fixedly installed on the outer wall of the conical feeding hopper 11. After adding the coated corn seeds, the fasteners 13 can be used to fix the cover 12 and the conical feeding hopper 11 together to prevent the seeds from popping out of the hopper opening.
[0044] However, as is well known to those skilled in the art, the working principles and wiring methods of the vibration motor 3 and the dust pump 14 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.
[0045] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0046] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A screening and impurity removal device for corn seed production, characterized in that, include: Hollow base (1), the bottom of the hollow base (1) is arranged in a ring array with multiple reinforcing holes for reinforcement to the ground by bolts, and three screen plates (2) are arranged in sequence above the hollow base (1). The side wall of the screen plate (2) is connected to the downward-facing discharge nozzle (4). The upper screen plate (2) is connected to the two arc-shaped inserts (8) fixed at the bottom and the two arc-shaped slots (9) at the top of the lower screen plate (2) by bolts and nuts. Two reinforcing blocks (5) are symmetrically welded on the outer wall of the screen plate (2). The reinforcing blocks (5) on two adjacent screen plates (2) are vertically aligned and reinforced by bolts and nuts. The top of the uppermost sieve disc (2) is fixed with a top cover (10) by bolts. The top of the top cover (10) is connected to a conical feeding hopper (11) to prevent too much coated corn seeds from entering and a dust extraction pipe (16). The other end of the dust extraction pipe (16) is provided with a collection component for collecting small impurities and debris.
2. The screening and impurity removal device for corn seed production according to claim 1, characterized in that, The bottom of the top and middle screens (2) are screens of different densities, the bottom of the bottom screens (2) is a smooth steel plate, and a vibration motor (3) is installed in the center of the bottom of the bottom screens (2) by bolts.
3. The screening and impurity removal device for corn seed production according to claim 2, characterized in that, Multiple damping springs (6) are arranged in a ring array between the bottommost screen plate (2) and the hollow base (1). The spring seats at both ends of the damping springs (6) are fixedly connected to the bottom of the bottommost screen plate (2) and the top of the hollow base (1) by bolts.
4. The screening and impurity removal device for corn seed production according to claim 1, characterized in that, The top of the conical feeding hopper (11) is fitted with a cover (12) by a hinge. The cover (12) and the conical feeding hopper (11) are fixed by two fasteners (13). A hook is fixedly provided on the side wall of the cover (12). A handle that works with the corresponding hook is fixedly provided on the outer wall of the conical feeding hopper (11).
5. A screening and impurity removal device for corn seed production according to claim 1, characterized in that, The collection assembly includes a dust pump (14) whose input end is connected to the other end of a dust extraction pipe (16). The suction end of the dust extraction pipe (16) is fitted with a filter screen to prevent coated corn seeds from entering the pipe. The output end of the dust pump (14) is connected to a dust conveying pipe (17), and the other end of the dust conveying pipe (17) is connected to a dust storage box (15).
6. A screening and impurity removal device for corn seed production according to claim 5, characterized in that, The dust collection box (15) has a cover (18) fixedly attached to the top opening. The cover (18) has an exhaust port in the center, and a corresponding filter is embedded in the exhaust port.
7. A screening and impurity removal device for corn seed production according to claim 2, characterized in that, The uppermost and middle discharge nozzles (4) have screens with the same screen density as the corresponding screen discs (2) embedded in their input ends.