A large-grain seed screening and filtering device

Abstract

The utility model belongs to the technical field of seed screening device, specifically disclose a big granule seed screening filter equipment, including sieve box, the inside wall of sieve box is connected with the qualified material blanking area, the bottom of sieve box is connected with the reject material blanking area, the bottom fixed connection of sieve box has first open -worked support, the below of first open -worked support is provided with motor, the fixed connection of the last end of motor's rotating shaft has connecting shaft, the last end of connecting shaft extends to sieve box inside and fixed connection has the turntable, the turntable is with sieve box longitudinal axial distribution, the top of sieve box is connected with the feed port, the outside of sieve box is provided with the discharge gate. The utility model through motor drive turntable rotation, when the seed falls in the rotating turntable from the feed port, is received the centrifugal force action can be even flung to all around, and according to the different weight, is respectively flung into the qualified material blanking area and the reject material blanking area, to realize the purpose of quick screening, and the screening effect is good, can avoid the flat seed mix into the qualified material.

Description

Technical Field

[0001] This utility model belongs to the technical field of seed screening devices, specifically a large-particle seed screening and filtering device. Background Technology

[0002] In agricultural production, seed processing, and breeding research, precise size screening and grading of seeds is a crucial pretreatment step. For large-grained seeds such as corn, soybeans, peanuts, and pumpkins, the purpose of screening is to remove shriveled seeds, broken grains, and small impurities, thereby ensuring seed uniformity, purity, and sowing quality.

[0003] Chinese patent CN221620053U discloses a seed screening and filtering device for agricultural breeding. The device consists of a power component and two screening mechanisms. The activation of the power component enables the two screening mechanisms to operate simultaneously. Under the combined action of the drive mechanism and the buffer mechanism, the first and second sieve plates will move back and forth in a cyclic manner to achieve the purpose of double screening of seeds and improve the screening effect.

[0004] The sorting principle of the aforementioned devices primarily relies on the geometric dimensions of the seed particles. However, the problem with shriveled seeds is that they are lightweight and not plump enough, yet their external cross-sectional dimensions are often similar to those of qualified seeds. This makes it difficult to effectively remove shriveled seeds through reciprocating sieving based on size differences, ultimately resulting in them being mixed into the finished product and reducing the overall purity of the seeds. Furthermore, during operation, the sieve holes on the sieve plate are easily clogged by seeds, increasing the workload of daily maintenance and affecting the continuity and efficiency of the screening operation. Therefore, there is a need to develop a large-particle seed screening and filtering device that can remove shriveled seeds while ensuring the continuity of the screening operation. Utility Model Content

[0005] To address the above technical problems, this utility model provides a large-particle seed screening and filtering device that can remove shriveled seeds and ensure continuous screening operations.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is as follows: a large-particle seed screening and filtering device, including a sieve box, a qualified material discharge area connected to the inner side wall of the sieve box, a rejected material discharge area connected to the bottom of the sieve box, a first hollow support fixedly connected to the bottom of the sieve box, a motor arranged below the first hollow support, a connecting shaft fixedly connected to the end of the motor shaft, the end of the connecting shaft extending into the interior of the sieve box and fixedly connected to a turntable, the turntable being axially distributed with the longitudinal direction of the sieve box, a feed inlet connected to the top of the sieve box, and a discharge outlet arranged on the outer side of the sieve box.

[0007] Furthermore, a protective box is connected to the bottom of the first hollow bracket, a third hollow bracket is connected to the bottom of the protective box, the motor is fixedly connected to the bottom of the third hollow bracket, the connecting shaft extends vertically into the interior of the protective box, a fan blade is fixedly connected to the connecting shaft, and multiple slots are circumferentially opened on the top of the protective box.

[0008] Furthermore, the protective box has a conical structure that is narrow at the top and narrow at the bottom, and a filter screen is fixedly connected inside the slot.

[0009] Furthermore, a feeding pipe is fixedly connected inside the feed inlet via a second hollowed-out bracket, and the feeding pipe is distributed coaxially with the vertical axis of the turntable.

[0010] Furthermore, a receiving hopper is fixedly connected to the top of the feeding pipe.

[0011] Furthermore, the discharge port is provided in multiple ways and distributed in a circular array. A discharge chamber door is vertically slidably connected inside the discharge port, and a handle is fixedly connected to the outer wall of the discharge chamber door.

[0012] Furthermore, the bottom of the sieve box is fixedly connected to several support frames, and the bottom of the support frames is provided with mounting holes.

[0013] This utility model has the following advantages compared with the prior art:

[0014] This invention uses a motor to drive a turntable to rotate. When seeds fall from the feed inlet onto the rotating turntable, they are evenly flung around by centrifugal force and, depending on their weight, are thrown into the qualified material drop zone and the rejected material drop zone, thereby achieving rapid screening. The screening effect is good, and it can prevent shriveled seeds from being mixed into qualified materials. Furthermore, the screening process can be carried out continuously, avoiding the risk of screen hole clogging that occurs with traditional screen plates. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a front view structural diagram of the present utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the sieve box structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the protective box structure of this utility model.

[0020] The components are: 1. Screen box; 2. Qualified material discharge area; 3. Rejected material discharge area; 4. First hollow support; 5. Protective box; 6. Motor; 7. Connecting shaft; 8. Turntable; 9. Second hollow support; 10. Feeding pipe; 11. Fan blade; 12. Third hollow support; 13. Filter screen; 14. Receiving hopper; 15. Discharge hopper door; 16. Handle; 17. Support frame. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figures 1-5 The large-particle seed screening and filtering device shown includes a sieve box 1. A qualified material discharge area 2 is connected to the inner wall of the sieve box 1, and a rejection material discharge area 3 is connected to the bottom of the sieve box 1. A first hollow support 4 is fixedly connected to the bottom of the sieve box 1. A motor 6 is arranged below the first hollow support 4. A connecting shaft 7 is fixedly connected to the end of the rotating shaft of the motor 6. The end of the connecting shaft 7 extends into the interior of the sieve box 1 and is fixedly connected to a turntable 8. The turntable 8 is axially distributed with the sieve box 1. A feed inlet is connected to the top of the sieve box 1, and a discharge outlet is arranged on the outside of the sieve box 1. When the seeds fall from the feed inlet onto the rotating turntable 8, they are evenly thrown around by centrifugal force. During this process, according to their weight, plump seeds are thrown into the qualified material discharge area 2 and discharged from the discharge outlet, while lighter shriveled seeds, broken particles, and small impurities fall into the rejection material discharge area 3 and fall out of the discharge outlet, thereby achieving the purpose of rapid screening.

[0023] To facilitate downward suction, a protective box 5 is connected to the bottom of the first hollow support 4, and a third hollow support 12 is connected to the bottom of the protective box 5. The motor 6 is fixedly connected to the bottom of the third hollow support 12, and the connecting shaft 7 extends vertically into the interior of the protective box 5. A fan blade 11 is fixedly connected to the connecting shaft 7. The top of the protective box 5 has multiple slots in a ring. When in use, the motor 6 is started to drive the turntable 8 to rotate, which can simultaneously drive the fan blade 11 to rotate. The suction force generated by the fan blade 11 enters the sieve box 1 through the first hollow support 4. Since the seeds are evenly thrown to all sides, they are relatively dispersed. Lighter shriveled seeds, broken particles, and small impurities can fall into the rejection material drop area 3 better under the suction force, further improving the screening effect.

[0024] To prevent seeds from affecting the fan, the protective box 5 has a conical structure that is narrow at the top and narrow at the bottom. A filter screen 13 is fixedly connected inside the slot. The filter screen 13 provides a stable working environment for the fan blades 11. When shriveled seeds, broken particles, and small impurities fall onto the filter screen 13, they can roll down the slope under gravity, greatly reducing the risk of the filter screen 13 becoming clogged. Even if the filter screen 13 becomes clogged, it can be cleaned simultaneously during the screening process, without interrupting the screening.

[0025] To facilitate feeding, a feeding tube 10 is fixedly connected to the feed inlet via a second hollow bracket 9. The feeding tube 10 is coaxially distributed with the vertical axis of the turntable 8. The feeding tube 10 guides the fed seeds so that they fall precisely at the center of the turntable 8, resulting in better dispersion.

[0026] To facilitate material receiving, a receiving hopper 14 is fixedly connected to the top of the feeding pipe 10. The receiving hopper 14 provides more space for material feeding.

[0027] To facilitate material discharge, multiple discharge ports are provided and distributed in a circular array. A discharge hopper door 15 is vertically slidably connected inside the discharge port. A handle 16 is fixedly connected to the outer wall of the discharge hopper door 15. When the discharge hopper door 15 is slid upward to open it, the seeds that have fallen into the qualified material discharge area 2 can be discharged outward. Furthermore, the setting of multiple discharge hopper doors 15 can prevent the situation where seeds remain in the qualified material discharge area 2 and cannot be removed.

[0028] To facilitate stable support, several support frames 17 are fixedly connected to the bottom of the screen box 1, and the bottom of the support frame 17 is provided with mounting holes.

[0029] The specific working process of this utility model is as follows:

[0030] During seed screening, the motor 6 drives the connecting shaft 7 to rotate. The connecting shaft 7 simultaneously rotates the turntable 8 and the fan blades 11. The fan blades 11 generate suction and act on the rejection material discharge area 3. Then, the seeds are poured into the receiving hopper 14 and, guided by the feeding pipe 10, fall precisely at the center of the turntable 8, allowing the seeds to be thrown in all directions. Because normal seeds are plump and relatively heavy, while shriveled seeds, broken particles, and small impurities are lighter, normal seeds can be thrown into the qualified material discharge area 2 and discharged out through the outlet. Shriveled seeds, broken particles, and small impurities, due to their light weight and the suction from below, are thrown a shorter distance and fall into the rejection material discharge area 3, and are then discharged from below, thus completing the rapid screening of large seed particles.

Claims

1. A large-particle seed screening and filtering device, comprising a sieve box (1), characterized in that: The inner wall of the sieve box (1) is connected to a qualified material dropping area (2), the bottom of the sieve box (1) is connected to a discard material dropping area (3), the bottom of the sieve box (1) is fixedly connected to a first hollow support (4), a motor (6) is provided below the first hollow support (4), the end of the rotating shaft of the motor (6) is fixedly connected to a connecting shaft (7), the end of the connecting shaft (7) extends into the sieve box (1) and is fixedly connected to a turntable (8), the turntable (8) is axially distributed with the sieve box (1), the top of the sieve box (1) is connected to a feed inlet, and the outside of the sieve box (1) is provided with a discharge outlet.

2. The large-particle seed screening and filtering device according to claim 1, characterized in that: The bottom of the first hollow bracket (4) is connected to a protective box (5), the bottom of the protective box (5) is connected to a third hollow bracket (12), the motor (6) is fixedly connected to the bottom of the third hollow bracket (12), the connecting shaft (7) extends vertically into the interior of the protective box (5), the connecting shaft (7) is fixedly connected to a fan blade (11), and the top of the protective box (5) has multiple slots in a ring.

3. The large-particle seed screening and filtering device according to claim 2, characterized in that: The protective box (5) is a conical structure with a narrow top and a narrow bottom, and a filter screen (13) is fixedly connected inside the slot.

4. The large-particle seed screening and filtering device according to claim 1, characterized in that: The feed inlet is fixedly connected to the feeding pipe (10) by the second hollow bracket (9), and the feeding pipe (10) is distributed coaxially with the vertical axis of the turntable (8).

5. The large-particle seed screening and filtering device according to claim 4, characterized in that: The top of the feeding pipe (10) is fixedly connected to a receiving hopper (14).

6. The large-particle seed screening and filtering device according to claim 1, characterized in that: The discharge port is provided in multiple ways and is arranged in a circular array. A discharge chamber door (15) is vertically slidably connected inside the discharge port. A handle (16) is fixedly connected to the outer wall of the discharge chamber door (15).

7. The large-particle seed screening and filtering device according to claim 1, characterized in that: The bottom of the sieve box (1) is fixedly connected to several support frames (17), and the bottom of the support frames (17) is provided with mounting holes.

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