A feeding mechanism for a seed screening machine

Abstract

This utility model relates to the field of seed screening technology, specifically a guiding mechanism for a seed screening machine. It includes a guiding box with a feed hopper mounted on its upper end. A guiding assembly is fixed inside the guiding box, comprising an inclined guiding plate with multiple guiding grooves on its top surface. A cover plate is fixed to one end of the inclined guiding plate. An auger shaft is installed inside one end of each guiding groove. A bracket is rotatably connected to the outer peripheral wall of one end of the auger shaft. A hollow mounting box is rotatably connected to the output shaft in the middle of the auger shaft. The outer walls of the bracket and the hollow mounting box are fixedly connected to the groove walls of the guiding groove. By changing the gap between the clamping block and the guiding groove, the seed flow rate in the guiding groove can be adjusted, facilitating the adjustment of the appropriate flow rate for seeds of different sizes. This reduces flow fluctuations caused by differences in seed particle size. The auger shaft rotation pushes the seeds, preventing blockages and ensuring continuous and stable seed delivery, thus improving screening quality.

Description

Technical Field

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

[0002] In the fields of agricultural production and seed processing, seed screening is a key step in ensuring seed quality, improving germination rate and crop yield. As an important component of seed screening machines, the performance of the feeding mechanism directly affects screening efficiency and accuracy. A search revealed a Chinese patent with publication number CN222035832U, which provides a feeding device for a chili seed screening machine. The device uses a drive motor to rotate a baffle, and a pointer and indicator plate are used to adjust the baffle angle to control the amount of seeds discharged. However, during use, it was found that the flow rate adjustment is controlled only by the gap between the baffle and the hopper. For seeds with different particle sizes or those that are prone to clumping, the flow rate is prone to fluctuation due to insufficient gap adaptability. The adjustment accuracy is limited and it is difficult to adapt to the differentiated needs of multiple seed varieties. When seeds are damp and sticky and form clumps, they are prone to accumulate and blockage in the feed channel, affecting the continuity of conveying and reducing the screening quality of seeds. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a feeding mechanism for a seed screening machine. By changing the gap between the clamping block and the feeding trough, the seed flow rate in the feeding trough can be adjusted, making it convenient to adjust the appropriate flow rate for seeds of different particle sizes. This reduces flow fluctuations caused by differences in seed particle size. The seeds are pushed by the rotation of the auger shaft to prevent blockage, ensuring continuous and stable seed delivery and improving screening quality.

[0004] To solve the above technical problems, this utility model provides the following technical solution: a guiding mechanism for a seed screening machine, including a guiding box, a feeding hopper installed at the upper end of the guiding box, a guiding assembly fixedly installed inside the guiding box, the guiding assembly including an inclined guiding plate, a plurality of guiding grooves opened on the top surface of the inclined guiding plate, a cover plate fixedly installed on the top surface of one end of the inclined guiding plate, an auger shaft provided inside one end of the guiding groove, a bracket rotatably connected to the outer peripheral wall of one end of the auger shaft, a hollow mounting box rotatably connected to the output shaft in the middle of the auger shaft, and the outer wall of the bracket and the outer wall of the hollow mounting box respectively fixedly connected to the groove wall of the guiding groove; The material guide box is rotatably connected to a dispersing component, which includes a dispersing roller. The material guide box is equipped with an adjusting component, which includes an adjusting block. Multiple locking blocks are fixed on the bottom surface of the adjusting block. The outer peripheral wall of the locking block abuts against the wall of the material guide trough. The screening machine body is installed on the bottom surface of the material guide box.

[0005] Preferably, a rotating shaft is rotatably connected to the feed box, and one end of the rotating shaft and the dispersing roller respectively extends through the feed box to the outside. A pulley is sleeved on the outer peripheral wall of one end of the rotating shaft and the dispersing roller that extends to the outside.

[0006] Preferably, a belt is used for frictional transmission between the grooves of the two pulleys, and a servo motor is installed on the outer peripheral wall of the guide box, with the output shaft of the servo motor coaxially connected to the dispersing roller.

[0007] Through the above technical solution, the output shaft of the servo motor drives the dispersing roller to rotate. Since the dispersing roller and the outer peripheral wall of one end of the rotating shaft are respectively sleeved with pulleys, and the two pulleys are driven by belt friction, the dispersing roller rotates and drives the rotating shaft to rotate synchronously.

[0008] Preferably, a plurality of first stirring rods are fixed on the outer peripheral wall of the dispersing roller, and a plurality of second stirring rods are fixed on the outer peripheral wall of the dispersing roller, wherein the length of the first stirring rods is greater than the length of the second stirring rods.

[0009] Through the above technical solution, the first and second stirring rods on the outer peripheral wall of the dispersing roller rotate simultaneously with the dispersing roller, which agitates the seeds in multiple layers, fully breaks up the clumps of seeds, reduces the problem of seed accumulation and blockage caused by moisture and stickiness, and ensures the continuity of conveying.

[0010] Preferably, the outer wall of the adjusting block is slidably connected to the inner wall of the guide box, a push block is fixedly provided on the top surface of the adjusting block, the outer peripheral wall of the push block is slidably connected to the feed hopper, a cylinder is installed on the outer peripheral wall of the guide box, and the top surface of the piston rod of the cylinder is fixedly connected to the bottom surface of the push block.

[0011] Through the above technical solution, the piston rod of the cylinder drives the push block to move, and the push block drives the adjusting block to slide on the inner wall of the guide box.

[0012] Preferably, the locking block is fixedly connected to the adjusting block by an internal hex bolt, and a limiting block is fixed at each end of the adjusting block, and the two limiting blocks are slidably connected to the inner wall of the guide box.

[0013] Through the above technical solution, the limiting blocks at both ends of the adjusting block are slidably connected to the inner wall of the guide box to ensure stable movement.

[0014] Preferably, the hollow mounting box is provided with a worm gear inside, and the worm gear is sleeved on the middle part of the auger shaft.

[0015] Preferably, the outer peripheral wall of the rotating shaft is fitted with a plurality of worm teeth, the worm teeth are located inside the hollow mounting box, and the worm teeth are meshed with the worm wheel.

[0016] Through the above technical solution, the worm gear teeth mesh with the worm wheel, the worm wheel drives the auger shaft to rotate, and the auger shaft pushes the seeds to prevent blockage.

[0017] The beneficial effects of this utility model are: By changing the gap between the card block and the guide trough, the seed flow rate in the guide trough can be adjusted, making it easy to adjust the appropriate flow rate for seeds of different particle sizes. This reduces flow fluctuations caused by differences in seed particle size and adapts to the differentiated conveying needs of multiple seed varieties. The auger shaft inside one end of the guide trough rotates to push the seeds, preventing blockage and ensuring continuous and stable seed conveying, thus improving screening quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the material guide box of this utility model; Figure 3 This is a schematic diagram of the dispersing roller structure of this utility model; Figure 4 This is a bottom perspective view of the inclined guide plate structure of this utility model; Figure 5 This is a schematic diagram of the card block structure assembly of this utility model; Figure 6 This is a schematic diagram of the auger shaft structure of this utility model; Figure 7 This is a schematic diagram of the worm gear structure of this utility model.

[0019] In the diagram: 100, feed box; 200, feed hopper; 300. Material guiding assembly; 301. Inclined material guiding plate; 302. Material guiding trough; 303. Screw shaft; 304. Bracket; 305. Hollow mounting box; 306. Cover plate; 307. Rotating shaft; 308. Worm gear; 309. Worm tooth; 400. Dispersion assembly; 401. Dispersion roller; 402. First stirring rod; 403. Second stirring rod; 500. Adjustment component; 501. Adjustment block; 502. Locking block; 503. Push block; 504. Cylinder; 505. Socket head cap screw; 506. Limit block; 600, pulley; 700, belt; 800, servo motor; 900, screening machine body. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-7As shown, this embodiment provides a guiding mechanism for a seed screening machine, including a guiding box 100, a feeding hopper 200 installed on the upper end of the guiding box 100, a guiding assembly 300 fixed inside the guiding box 100, the guiding assembly 300 including an inclined guiding plate 301, a plurality of guiding grooves 302 opened on the top surface of the inclined guiding plate 301, a cover plate 306 fixed on the top surface of one end of the inclined guiding plate 301, an auger shaft 303 provided inside one end of the guiding groove 302, a bracket 304 rotatably connected to the outer peripheral wall of one end of the auger shaft 303, a hollow mounting box 305 rotatably connected to the output shaft in the middle of the auger shaft 303, and the outer walls of the bracket 304 and the hollow mounting box 305 respectively fixedly connected to the groove wall of the guiding groove 302; A dispersing component 400 is rotatably connected inside the feed box 100. The dispersing component 400 includes a dispersing roller 401. An adjusting component 500 is provided inside the feed box 100. The adjusting component 500 includes an adjusting block 501. Multiple locking blocks 502 are fixed on the bottom surface of the adjusting block 501. The outer peripheral wall of the locking block 502 abuts against the groove wall of the feed trough 302. A screening machine body 900 is installed on the bottom surface of the feed box 100.

[0022] A rotating shaft 307 is rotatably connected to the feed box 100. One end of the rotating shaft 307 and the dispersing roller 401 extend through the feed box 100 to the outside. Pulleys 600 are respectively sleeved on the outer peripheral walls of the rotating shaft 307 and the dispersing roller 401. A belt 700 is driven by friction between the grooves of the two pulleys 600. A servo motor 800 is installed on the outer peripheral wall of the feed box 100. The output shaft of the servo motor 800 is coaxially connected to the dispersing roller 401. The output shaft of the servo motor 800 drives the dispersing roller 401 to rotate. Since the dispersing roller 401 and the outer peripheral wall of the rotating shaft 307 are respectively sleeved with pulleys 600, and the two pulleys 600 are driven by friction through the belt 700, the rotating shaft 307 rotates synchronously while the dispersing roller 401 rotates.

[0023] Multiple first stirring rods 402 are fixed on the outer peripheral wall of the dispersing roller 401, and multiple second stirring rods 403 are fixed on the outer peripheral wall of the dispersing roller 401. The length of the first stirring rods 402 is greater than the length of the second stirring rods 403. The first stirring rods 402 and the second stirring rods 403 on the outer peripheral wall of the dispersing roller 401 rotate simultaneously with the dispersing roller 401, and perform multi-level stirring of the seeds, which fully disperses the clumps of seeds, reduces the problem of seed accumulation and blockage caused by moisture and adhesion, and ensures the continuity of conveying.

[0024] The outer wall of the adjusting block 501 is slidably connected to the inner wall of the guide box 100. A push block 503 is fixedly provided on the top surface of the adjusting block 501. The outer peripheral wall of the push block 503 is slidably connected to the feed hopper 200. A cylinder 504 is installed on the outer peripheral wall of the guide box 100. The top surface of the piston rod of the cylinder 504 is fixedly connected to the bottom surface of the push block 503. The piston rod of the cylinder 504 drives the push block 503 to move, and the push block 503 drives the adjusting block 501 to slide on the inner wall of the guide box 100.

[0025] The locking block 502 is fixedly connected to the adjusting block 501 by the internal hex bolt 505. The adjusting block 501 has a limit block 506 fixed at both ends. The two limit blocks 506 are slidably connected to the inner wall of the guide box 100. The limit blocks 506 at both ends of the adjusting block 501 are slidably connected to the inner wall of the guide box 100 to ensure stable movement.

[0026] The hollow mounting box 305 has a worm gear 308 inside, which is sleeved in the middle of the auger shaft 303. Multiple worm teeth 309 are sleeved on the outer peripheral wall of the rotating shaft 307. The worm teeth 309 are located inside the hollow mounting box 305 and are meshed with the worm gear 308. The worm gear 309 and the worm wheel 308 mesh with each other, and the worm gear 308 drives the auger shaft 303 to rotate. The auger shaft 303 pushes the seeds to prevent blockage.

[0027] Working principle: After the seeds enter the feed box 100 through the feed hopper 200, they first come into contact with the dispersing roller 401 in the dispersing component 400. The dispersing roller 401 agitates the seeds, dispersing any clumps. The dispersed seeds fall onto the inclined guide plate 301 of the guide component 300 and enter multiple guide troughs 302. The adjusting block 501 of the adjusting component 500 moves the locking block 502, which abuts against the wall of the guide trough 302. By changing the gap between the locking block 502 and the guide trough 302, the seed flow rate in the guide trough 302 is adjusted. This allows for easy adjustment of the flow rate to a suitable level for seeds of different sizes, reducing flow fluctuations caused by differences in seed particle size and adapting to the differentiated conveying needs of various seed varieties. The seeds in the guide trough 302 are conveyed downward along the inclined guide plate 301. At the same time, the auger shaft 303 inside one end of the guide trough 302 rotates to push the seeds, prevent blockage, ensure continuous and stable seed conveying, and improve the screening quality. The seeds are guided by the guide trough 302 to the screening machine body 900 at the bottom of the guide box 100 for screening. During dispersion, after the seeds enter the feed box 100 through the feed hopper 200, the output shaft of the servo motor 800 drives the dispersion roller 401 to rotate. Since the dispersion roller 401 and the outer peripheral wall of the rotating shaft 307 are respectively sleeved with pulleys 600, and the two pulleys 600 are driven by friction through the belt 700, the rotation of the dispersion roller 401 drives the rotating shaft 307 to rotate synchronously. The first stirring rod 402 and the second stirring rod 403 on the outer peripheral wall of the dispersion roller 401 rotate simultaneously with the dispersion roller 401, and perform multi-level stirring of the seeds, which fully disperses the clumps of seeds, reduces the problem of accumulation and blockage caused by moisture and adhesion, and ensures the continuity of conveying. The dispersed seeds fall onto the inclined guide plate 301 and enter multiple guide troughs 302. The piston rod of the cylinder 504 drives the push block 503 to move. The push block 503 drives the adjusting block 501 to slide on the inner wall of the guide box 100. The limiting blocks 506 at both ends of the adjusting block 501 are slidably connected to the inner wall of the guide box 100 to ensure stable movement. The locking block 502 on the bottom of the adjusting block 501 moves accordingly, and the locking block 502 abuts against the wall of the guide trough 302. The seed flow rate in each guide trough 302 is adjusted by changing the gap between the two. The locking block 502 is fixed to the adjusting block 501 by the internal hex bolt 505 for easy replacement. When the rotating shaft 307 rotates, the multiple worm teeth 309 sleeved on its outer peripheral wall rotate synchronously. Since the worm teeth 309 are meshed with the worm wheel 308, the worm wheel 308 drives the auger shaft 303 to rotate. The auger shaft 303 pushes the seeds to prevent blockage.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A feeding mechanism for a seed screening machine, characterized in that, include: A feed hopper (200) is installed at the upper end of a feed box (100). A feed assembly (300) is fixedly installed inside the feed box (100). The feed assembly (300) includes an inclined feed plate (301). A plurality of feed grooves (302) are opened on the top surface of the inclined feed plate (301). A cover plate (306) is fixedly installed on the top surface of one end of the inclined feed plate (301). An auger shaft (303) is provided inside one end of the feed groove (302). A bracket (304) is rotatably connected to the outer peripheral wall of one end of the auger shaft (303). A hollow mounting box (305) is rotatably connected to the output shaft in the middle of the auger shaft (303). The outer wall of the bracket (304) and the outer wall of the hollow mounting box (305) are respectively fixedly connected to the groove wall of the feed groove (302). The material guide box (100) is rotatably connected to a dispersing component (400), the dispersing component (400) includes a dispersing roller (401), the material guide box (100) is provided with an adjusting component (500), the adjusting component (500) includes an adjusting block (501), the bottom surface of the adjusting block (501) is fixed with a plurality of locking blocks (502), the outer peripheral wall of the locking block (502) abuts against the groove wall of the material guide trough (302), and the bottom surface of the material guide box (100) is equipped with a screening machine body (900).

2. The feeding mechanism of the seed screening machine as described in claim 1, characterized in that: A rotating shaft (307) is rotatably connected to the feed box (100). One end of the rotating shaft (307) and the dispersing roller (401) extend through the feed box (100) to the outside. A pulley (600) is sleeved on the outer peripheral wall of one end of the rotating shaft (307) and the dispersing roller (401) extending to the outside.

3. The feeding mechanism of the seed screening machine as described in claim 2, characterized in that: A belt (700) is used for frictional transmission between the grooves of the two pulleys (600), and a servo motor (800) is installed on the outer peripheral wall of the guide box (100). The output shaft of the servo motor (800) is coaxially connected to the dispersing roller (401).

4. The feeding mechanism of the seed screening machine as described in claim 3, characterized in that: A plurality of first stirring rods (402) are fixed on the outer peripheral wall of the dispersing roller (401), and a plurality of second stirring rods (403) are fixed on the outer peripheral wall of the dispersing roller (401). The length of the first stirring rods (402) is greater than the length of the second stirring rods (403).

5. The feeding mechanism of the seed screening machine as described in claim 4, characterized in that: The outer wall of the adjusting block (501) is slidably connected to the inner wall of the guide box (100). A push block (503) is fixedly provided on the top surface of the adjusting block (501). The outer peripheral wall of the push block (503) is slidably connected to the feed hopper (200). A cylinder (504) is installed on the outer peripheral wall of the guide box (100). The top surface of the piston rod of the cylinder (504) is fixedly connected to the bottom surface of the push block (503).

6. The feeding mechanism of the seed screening machine as described in claim 5, characterized in that: The card block (502) is fixedly connected to the adjusting block (501) by an internal hex bolt (505). The adjusting block (501) is fixed with a limiting block (506) at both ends. The two limiting blocks (506) are slidably connected to the inner wall of the guide box (100).

7. The feeding mechanism of the seed screening machine as described in claim 6, characterized in that: The hollow mounting box (305) is equipped with a worm gear (308) inside, which is sleeved on the middle of the auger shaft (303).

8. The feeding mechanism of the seed screening machine as described in claim 7, characterized in that: The outer peripheral wall of the rotating shaft (307) is fitted with a plurality of worm teeth (309), the worm teeth (309) are located inside the hollow mounting box (305), and the worm teeth (309) are meshed with the worm wheel (308).

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