A seed screening device

Abstract

This utility model discloses a seed screening device, including a screening frame. A frame cover is fixedly connected to the top of the screening frame. The top of the frame cover has a threaded groove, and a circular cap is threadedly connected to the inner wall of the threaded groove. A stainless steel filter screen is fixedly embedded in the bottom of the circular cap. Two I-shaped shafts are rotatably embedded in the outer wall of the frame cover. This utility model achieves quick unlocking through the screening screen and cotter pins and shafts. With the assistance of the handle, the L-shaped base plate sliding along the guide rod, and the guide plate, the frame can be easily pulled out without disassembling multiple bolts or prying the slots, greatly simplifying the removal process and saving time and effort. For the stainless steel filter screen, the filter screen can be exposed by rotating the anti-lift plate with the I-shaped shaft and then rotating the circular cap through the threaded groove, without disassembling the pipe interface, making the operation simple and efficient. The absence of complex disassembly and the quick cleaning and maintenance process significantly shorten downtime.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a seed screening device. Background Technology

[0002] Corn seeds need to be screened primarily to ensure seed quality and germination rate, thereby improving crop yield and resistance to adverse conditions. Seed screening is a crucial step in corn production, both in breeding and planting. Screening removes moldy, immature, insect-damaged, and broken seeds, as well as impurities and dust. Furthermore, screening improves seed purity and uniformity, reducing the impact of differences in seed size and germination vigor on seedling emergence and growth, thus achieving balanced yield increases. Therefore, corn seeds need to be screened to obtain the required qualified seeds.

[0003] In existing technologies, the screens inside screening devices are mostly fixed in place, such as being directly bolted to the device or embedded in welded slots. Therefore, when impurities such as mud and grains in the corn seeds clog the screen holes, operators need to remove multiple bolts or pry open the slots to remove the screen for cleaning. This is not only time-consuming and labor-intensive, but frequent disassembly can also lead to deformation of the screen edges and wear on the frame connections, reducing the equipment's lifespan. Furthermore, the filters used to filter dust and fine particles are rigidly connected to pipes or fans via flanges. Cleaning requires first disassembling the pipe connections and then removing the filter fixings, making the process cumbersome. Especially in continuous production scenarios, prolonged downtime for cleaning can affect overall screening efficiency. Therefore, we propose a seed screening device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a seed screening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seed screening device includes a screening frame, a frame cover fixedly connected to the top of the screening frame, a threaded groove on the top of the frame cover, a circular cap threaded to the inner wall of the threaded groove, a stainless steel filter screen fixedly embedded at the bottom of the circular cap, two I-shaped shafts rotatably embedded in the outer wall of the frame cover, anti-lift plates fixedly connected to the top of each of the two I-shaped shafts, two guide plates fixedly connected inside the screening frame, a rectangular groove on the outer wall of the screening frame, an opening and closing door slidably connected to the inner wall of the rectangular groove, a U-shaped frame fixedly connected to the outer wall of the opening and closing door, a screening screen fixedly embedded at the bottom of the U-shaped frame, a cleaning component inside the screening frame, a vibration component at the bottom of the screening frame, and a waste discharge frame and a discharge hopper fixedly connected at the bottom of the screening frame.

[0007] Preferably, the cleaning component includes two guide rods. The inner wall of the screening frame is fixedly connected to one end of the two guide rods, and the other end of each guide rod is fixedly connected to the outer wall of one of the guide plates. The outer walls of the two guide rods are slidably fitted with the same L-shaped base plate. The top of the L-shaped base plate is fixedly connected to the bottom of the U-shaped frame. A rectangular strip is fixedly connected to the outer wall of the U-shaped frame. Two insertion holes are opened on the outer wall of the rectangular strip, and pins are slidably connected to the inner walls of the two insertion holes. The cleaning component facilitates the cleaning of the stainless steel filter screen and the screening screen.

[0008] Preferably, the vibration assembly includes a vibration motor, the outer wall of the waste discharge frame is fixedly connected to the outer wall of the vibration motor, and four springs are fixedly connected to the bottom of the screening frame. The bottom of the four springs is fixedly connected to the same foot. By setting the vibration assembly, the screening frame and the screening screen vibrate to achieve the screening effect.

[0009] Preferably, a flexible hose is fixedly connected to the top of the circular cap, and a dust removal fan is fixedly connected to one end of the flexible hose. The dust removal fan extracts dust and fine impurities from the screening frame.

[0010] Preferably, a hopper is fixedly connected to the top of the frame cover, and a handle is fixedly connected to the outer wall of the opening and closing door.

[0011] Preferably, the outer wall of the screening frame is provided with a rectangular hole, the inner wall of the rectangular hole is slidably connected to the outer wall of the rectangular strip, and the rectangular hole and the rectangular strip are used in conjunction.

[0012] Preferably, pin holes are provided on the outer walls of both pins.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution utilizes a screen and a cotter pin / shaft for quick unlocking. With the help of a handle, an L-shaped base plate sliding along a guide rod, and a guide plate, the U-shaped frame can be easily pulled out without disassembling multiple bolts or prying open slots, greatly simplifying the removal process and saving time and effort. For stainless steel filters, the filter is exposed by rotating the anti-lift plate using an I-shaped shaft and then rotating the circular cap through the threaded groove, without disassembling pipe connections, making operation simple and efficient. The absence of complex disassembly and the rapid cleaning and maintenance process significantly reduce downtime. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a seed screening device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a seed screening device proposed in this utility model;

[0018] Figure 3 This is a front view structural diagram of a seed screening device proposed in this utility model;

[0019] Figure 4 This utility model proposes a seed screening device. Figure 2 A magnified structural diagram of part A in the diagram;

[0020] Figure 5 This utility model proposes a seed screening device. Figure 2 A magnified structural diagram of part B in the diagram;

[0021] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of a seed screening device proposed in this utility model.

[0022] In the diagram: 1. Screening frame; 2. Frame cover; 3. Round cap; 4. Stainless steel filter screen; 5. Flexible hose; 6. I-shaped shaft; 7. Anti-lift plate; 8. Discharge hopper; 9. Guide plate; 10. Opening and closing door; 11. Handle; 12. U-shaped frame; 13. Screening screen; 14. L-shaped base plate; 15. Guide rod; 16. Rectangular strip; 17. Pin shaft; 18. Waste material discharge frame; 19. Vibration motor; 20. Spring; 21. Leg; 22. Discharge hopper. Detailed Implementation

[0023] 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.

[0024] Depend on Figures 1-6As shown, a seed screening device is disclosed, including a screening frame 1. A frame cover 2 is fixedly connected to the top of the screening frame 1, forming a closed space inside the screening frame 1 to reduce the overflow of dust and impurities during the screening process. A threaded groove is provided on the top of the frame cover 2, and a circular cap 3 is threadedly connected to the inner wall of the threaded groove. A stainless steel filter screen 4 is fixedly embedded in the bottom of the circular cap 3. The pore size of the stainless steel filter screen 4 is smaller than that of corn seeds, allowing dust and fine particles in the corn seeds to pass through easily.

[0025] A flexible hose 5 is fixedly connected to the top of the circular cap 3. A dust collector fan is fixedly connected to one end of the flexible hose 5. An existing filter bag is installed at the input end of the dust collector fan. Two I-shaped shafts 6 are rotatably embedded in the outer wall of the frame cover 2. Anti-lift plates 7 are fixedly connected to the top of the two I-shaped shafts 6. The I-shaped shafts 6 provide a fulcrum for the rotation of the anti-lift plates 7. In order to prevent the circular cap 3 from loosening during vibration, the outer walls of the two anti-lift plates 7 are located at the top of the circular cap 3 to limit its movement.

[0026] The top of the frame cover 2 is fixedly connected to the feed hopper 8. The inside of the screening frame 1 is fixedly connected to two guide plates 9. The two guide plates 9 assist the return frame 12 to move in a stable straight line. The outer wall of the screening frame 1 is provided with a rectangular groove. The inner wall of the rectangular groove is slidably connected to an opening and closing door 10. The outer wall of the opening and closing door 10 is fixedly connected to a handle 11.

[0027] A U-shaped frame 12 is fixedly connected to the outer wall of the opening and closing door 10. A screening mesh 13 is fixedly embedded at the bottom of the U-shaped frame 12. The screening mesh 13 screens the corn seeds during vibration, separating small particles of impurities to ensure the quality of the seeds after screening. It can also be easily cleaned by pulling out the U-shaped frame 12 to remove clogged mesh holes. The bottom of the screening frame 1 is fixedly connected to the impurity discharge frame 18 and the discharge hopper 22.

[0028] The screening frame 1 has a cleaning component inside, which includes two guide rods 15. The inner wall of the screening frame 1 is fixedly connected to one end of the two guide rods 15, and the other end of each guide rod 15 is fixedly connected to the outer wall of one of the guide plates 9. The screening frame 1 has a vertical partition inside, which separates impurities from corn seeds during discharge. The partition is installed on the outer wall of the two guide rods 15. The bottom of the vertical partition is inside the screening frame 1, specifically on the left side of the top of the discharge hopper 22. The outer wall of the two guide rods 15 is slidably fitted with the same L-shaped base plate 14. The L-shaped base plate 14 supports the return frame 12 and slides along the guide rods 15 with the return frame 12, ensuring the stability of the return frame 12.

[0029] The top of the L-shaped base plate 14 is fixedly connected to the bottom of the U-shaped frame 12. A rectangular strip 16 is fixedly connected to the outer wall of the U-shaped frame 12. A rectangular hole is opened on the outer wall of the screening frame 1. The inner wall of the rectangular hole is slidably connected to the outer wall of the rectangular strip 16. Two insertion holes are opened on the outer wall of the rectangular strip 16. A pin 17 is slidably connected to the inner wall of each insertion hole. A pin hole is opened on the outer wall of each pin 17. The rectangular strip 16 and the pin 17 cooperate to fix the U-shaped frame 12 inside the screening frame 1. The existing cotter pin is inserted into the inner wall of the pin hole.

[0030] The bottom of the screening frame 1 is equipped with a vibration assembly, which includes a vibration motor 19. The outer wall of the waste discharge frame 18 is fixedly connected to the outer wall of the vibration motor 19. Four springs 20 are fixedly connected to the bottom of the screening frame 1. When the vibration motor 19 drives the screening frame 1 to vibrate, the four springs 20 cooperate to generate multi-angle vibration to enhance the vibration effect. The bottom of the four springs 20 is fixedly connected to the same foot 21. The foot 21 provides stable support for the entire screening device, making it less likely to tip over during vibration. The foot 21 can be fixed in position by nailing existing foot nails into the ground to increase the overall stability.

[0031] Working principle: During use, corn seeds are fed into the screening frame 1 through the hopper 8. As the vibrating motor 19 operates, the screening frame 1 vibrates. The elastic force of the four springs 20 achieves multi-angle vibration. During the vibration, the corn moves to the right (the vibrating motor 19 generates periodic excitation force through the rotation of the eccentric block and the tilted installation angle, causing the corn seeds to undergo directional forced vibration). The screened corn seeds are discharged from the discharge hopper 22 at the right end of the screening screen 13. During the vibration, small particles of impurities are screened through the screening screen 13. The dust removal fan operates through the hose 5 connected to the input end, creating negative pressure inside the screening frame 1. Dust and fine particles in the corn seeds are drawn through the stainless steel filter screen 4 into the hose 5 and then collected by the filter bag installed at the input end of the dust removal fan. After prolonged use, when the mesh of the screen 13 and the stainless steel filter screen 4 become clogged, simply pull out the cotter pins in the two insertion holes, and then slide the two pin shafts 17 upward from the two insertion holes to release the position fixation of the loop frame 12. Pull the loop frame 12 outward through the handle 11. When the loop frame 12 is pulled outward, the L-shaped base plate 14 slides outward along the two guide rods 15, while the two guide plates 9 assist the loop frame 12 to move stably, directly exposing the screen 13 for cleaning. Rotate the two anti-lift plates 7 by the two I-shaped shafts 6 to make them rotate outward away from the top of the circular cap 3. The circular cap 3 rotates upward through the threaded groove, exposing the stainless steel filter screen 4 at the bottom of the circular cap 3 for cleaning.

[0032] It should be noted that when actually put into use, an existing PLC controller can be added. The PLC controller is electrically connected to the vibration motor 19 and the dust removal fan to facilitate the control of the overall operation.

[0033] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seed screening device comprising a screening frame (1), characterized in that, The top of the screening frame (1) is fixedly connected to a frame cover (2). The top of the frame cover (2) is provided with a threaded groove. A circular cap (3) is threadedly connected to the inner wall of the threaded groove. A stainless steel filter screen (4) is fixedly embedded at the bottom of the circular cap (3). Two I-shaped shafts (6) are rotatably embedded on the outer wall of the frame cover (2). Anti-lift plates (7) are fixedly connected to the top of the two I-shaped shafts (6). Two guide plates (9) are fixedly connected inside the screening frame (1). A rectangular groove is provided on the outer wall of the screening frame (1). An opening and closing door (10) is slidably connected to the inner wall of the rectangular groove. A U-shaped frame (12) is fixedly connected to the outer wall of the opening and closing door (10). A screening mesh (13) is fixedly embedded at the bottom of the U-shaped frame (12). A cleaning component is provided inside the screening frame (1). A vibration component is provided at the bottom of the screening frame (1). A waste discharge frame (18) and a discharge hopper (22) are fixedly connected at the bottom of the screening frame (1).

2. A seed screening device according to claim 1, wherein, The cleaning assembly includes two guide rods (15). The inner wall of the screening frame (1) is fixedly connected to one end of the two guide rods (15). The other end of each guide rod (15) is fixedly connected to the outer wall of one of the guide plates (9). The outer walls of the two guide rods (15) are slidably fitted with the same L-shaped base plate (14). The top of the L-shaped base plate (14) is fixedly connected to the bottom of the U-shaped frame (12). The outer wall of the U-shaped frame (12) is fixedly connected with a rectangular strip (16). The outer wall of the rectangular strip (16) has two insertion holes. The inner walls of the two insertion holes are slidably connected with pins (17).

3. The seed screening device of claim 1, wherein, The vibration assembly includes a vibration motor (19), the outer wall of the waste discharge frame (18) is fixedly connected to the outer wall of the vibration motor (19), and four springs (20) are fixedly connected to the bottom of the screening frame (1), and the bottom of the four springs (20) is fixedly connected to the same foot (21).

4. The seed screening device of claim 1, wherein, The top of the circular cap (3) is fixedly connected to a flexible hose (5), and one end of the flexible hose (5) is fixedly connected to a dust removal fan.

5. The seed screening device of claim 1, wherein, The top of the frame cover (2) is fixedly connected to the feed hopper (8), and the outer wall of the opening and closing door (10) is fixedly connected to the handle (11).

6. A seed screening device according to claim 2, wherein, The outer wall of the screening frame (1) is provided with a rectangular hole, and the inner wall of the rectangular hole is slidably connected to the outer wall of the rectangular bar (16).

7. A seed screening apparatus according to claim 2, wherein, Both pins (17) have pin holes on their outer walls.

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