Multi-stage seed screening equipment for agricultural production

Abstract

The utility model discloses multi-stage seed screening equipment for agricultural production, and belongs to the technical field of seed screening. Comprising a screening bin, a machine base and a material conveying unit, the screening bin comprises a plurality of bin bodies arranged at intervals, and cross beams are arranged on the two sides of the top face of the screening bin; screening net plates are arranged at the top of the bin body, and meshes of the multiple screening net plates are arranged from small to large. The inner side of the bin body is of a slope surface structure, and a discharging opening is formed in the position, on the low-position side of the slope surface, of the bin body. The screening bin is fixed to the top face of the side portion of the machine base, and a plurality of screening discharging hoppers are arranged on the machine base. The screening discharging hopper is in butt joint with the discharging opening. Slide ways are arranged on the two sides of the machine base. According to the multi-stage seed screening equipment for agricultural production, seed stacking can be avoided, attachments can be removed, and seeds are graded through the screening net plate during impurity removal; the seeds with various grades and particle sizes are obtained.

Description

Technical Field

[0001] The utility model specifically relates to multi-stage seed screening equipment for agricultural production, belonging to the technical field of seed screening. Background Art

[0002] When planting crops, in order to ensure the quality of seeds, it is usually necessary to screen and grade the seeds to remove seeds of poor quality, such as some light seeds with small particle size. At present, it is often used to manually screen seeds through a screen basket, or to intercept and filter the seeds of corresponding size. Manual screening of seeds has low screening efficiency and high labor intensity. As for the filter interception, the horizontally arranged filter cannot shake and can only fall by its own gravity, which is easy to be blocked at the filter, and the screening effect is not good. For this reason, China Patent Authorization Announcement No.: CN215844252U discloses a multi-stage seed screening machine for agricultural planting. When in use, the seeds are firstly separated through the filter, and fall into the feeding channel along the inclined section on one side of the filter, and enter the separation chamber through the discharge port. The rotating disk drives the seeds to perform centrifugal motion, and the seeds are evenly thrown into the separation chamber through the feeding port. The fan also rotates with the rotating disk at the same time. While feeding, the attachments on the seeds are blown away. However, this structure is easy to cause seed accumulation during seed screening, and the screening efficiency is average. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a multi-stage seed screening device for agricultural production, which can automatically spread and screen seeds to obtain seeds of various particle size grades.

[0004] The utility model discloses a multi-stage seed screening device for agricultural production, comprising:

[0005] The screening bin comprises a plurality of bin bodies arranged at intervals, and beams are arranged on both sides of the top surface of the screening bin; a screening mesh plate is arranged on the top of the bin body, and the mesh holes of the plurality of screening mesh plates are arranged from small to large; the inner side of the bin body is a slope structure, and the bin body is provided with a discharge port on the lower side of the slope;

[0006] The machine base, the screening bin is fixed to the top surface of the side of the machine base, and a plurality of screening hoppers are arranged on the machine base; the screening hoppers are connected to the discharge port; slideways are arranged on both sides of the machine base;

[0007] The material transfer unit comprises two table plates, a roller seat is fixed on the top surface of the table plate, and an active roller and a driven roller are respectively installed on the two roller seats; the active roller is installed with a material transfer motor outside the roller seat; a grid belt is sleeved on the outside of the active roller and the driven roller; a panel is movably fitted on the top surface of the grid belt, and the panel is fixed to the crossbeam; multiple debris removal pipes are arranged on the top surface of the panel, and the debris removal pipes are connected to a negative pressure fan; a feed hopper is arranged on the panel near one end of the active roller; a guide rail body movably engaged with a slideway is fixed on the inner side of the table plate.

[0008] During operation, the corresponding screening bin is selected according to the seed screening mesh requirements, and the base corresponding to the screening bin is movably embedded into the guide rail body; then, the seeds are fed into the feed hopper, and then, the active roller is driven to rotate by the feeding motor, thereby driving the grid belt to transfer the seeds and automatically spread the seeds. The seeds are filled into the grating holes of the grid belt, and the thickness of the spread is limited by the enclosure; when the seeds are transferred with the grid belt, the seeds can be sent to each screening mesh plate, and when the seeds roll, the impurities can be peeled off from the seeds, and the heavy impurities can be sent to the bin body, the discharge port and the screening hopper in turn through the first two levels of screening mesh plates; and through the cooperation of the negative pressure fan and the impurity removal pipe, negative pressure can be accurately provided to each grid hole of the grid belt, so as to extract light impurities from the grid holes; after the impurity removal is completed, the seeds are transferred to the subsequent screening mesh plates again through the grid belt, and the seeds are screened by particle size classification through the screening mesh plates. Finally, after the screening is completed, the large impurities staying on the grid belt are continuously transferred forward until the large impurities are discharged from the screening bin.

[0009] Furthermore, an open groove is provided on the top of the warehouse body, and the screening screen plate is movably embedded in the inner side of the open groove; the crossbeam is pressed onto the top surface of the open groove; a vibration gap is provided between the top surface of the screening screen plate and the crossbeam; a driving shaft movably passes through the inner side of the warehouse body through bearings; a plurality of cams are fixed on the driving shaft at intervals; the cam abuts against the bottom surface of the screening screen plate; a belt reel is fixed at one end of the driving shaft, and the belt reel is connected to the screening motor through a transmission belt.

[0010] When the grid belt moves intermittently, it drives the seeds to enter the top surface of the screening mesh. In the process of the seeds being pushed, the seeds can be rubbed to peel off the attachments on the seeds, so that they fall through the mesh holes of the screening mesh and move intermittently through the grid belt. When the seeds stay on the screening mesh, the screening motor is activated, and the screening motor drives the belt disk to rotate through the transmission belt, and the drive shaft is driven to rotate through the belt disk, and the drive shaft drives the cam to rotate. When the protruding end of the cam abuts against the screening mesh, it pushes the screening mesh to the top. Then, when the protruding end of the cam rotates the screening mesh, the screening mesh returns to its position, so that the screening mesh vibrates up and down, and the stripped impurities can be separated from the screening mesh by vibration, and the seeds can be graded and screened. When the grid belt is driven and the screening mesh vibrates, the seeds pass through the mesh holes of the screening mesh to remove heavy impurities and the light impurities are sucked by the negative pressure fan, thereby improving the efficiency of seed impurity removal and grade screening.

[0011] Furthermore, the table is provided with an impurity collecting hopper at one end of the driven roller. When the seeds are screened, the seed shells, stems and other large particles of impurities are sent to the impurity collecting hopper and collected by the impurity collecting hopper.

[0012] Furthermore, a manual screw slide is fixed to the side of the top surface of the table plate, and the roller seat of the active roller is fixed to the slider of the manual screw slide; during operation, the position of the roller seat can be adjusted by the manual screw slide, so that the tension of the grid belt can be adjusted, so that the grid belt can drive the seeds forward and at the same time, when the cam pushes up the screening mesh, excessive tension of the grid belt can be avoided.

[0013] Furthermore, a protective cover is hingedly connected to the outside of the active roller, and the protective cover can protect the active roller and prevent foreign matter from entering the active roller.

[0014] Furthermore, the roller seat is provided with a receiving plate, which is in contact with the end of the bin body and flush with the top surface of the screening mesh. Before the seeds enter the screening mesh, or after the screening is completed and sent out of the screening mesh, the seeds are received by the receiving plate to prevent the seeds from slipping off the grid belt.

[0015] Compared with the prior art, the utility model provides multi-stage seed screening equipment for agricultural production. The grid belt and the enclosure form a plurality of screening hole rows of fixed thickness to avoid seed stacking. The seeds and attachments are separated by grid belt transmission and screening mesh plate vibration. The attachments are removed by the hole rows and impurity removal pipes of the screening mesh plate. Large impurities are discharged into the impurity collection hopper. During impurity removal, the seeds are graded by the screening mesh plate to obtain seeds of various grades and particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the screening bin of the utility model.

[0017] Figure 2 This is a schematic diagram of the screening bin and base installation structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the installation structure of the screening bin, machine base and grille belt of the utility model.

[0019] Figure 4 It is a schematic diagram of the overall structure of the multi-stage seed screening equipment of the utility model.

[0020] Figure 5 It is a schematic diagram of the installation structure of the screening bin and the cam drive mechanism of the utility model.

[0021] Figure 6 This is a schematic diagram of the installation structure of the multi-stage seed screening equipment and the manual screw slide table of the utility model.

[0022] Figure numerals: 1. screening bin, 2. bin body, 3. crossbeam, 4. screening mesh plate, 5. machine base, 6. screening hopper, 7. slide, 8. table, 9. roller seat, 10. active roller, 11. driven roller, 12. material transfer motor, 13. grid belt, 14. enclosure, 15. impurity removal pipe, 16. feed hopper, 17. guide rail body, 18. open groove, 19. drive shaft, 20. cam, 21. screening motor, 22. impurity collection hopper, 23. manual screw slide, 24. protective cover, 25. receiving plate. DETAILED DESCRIPTION

[0023] like Figures 1 to 6 The multi-stage seed screening equipment for agricultural production shown includes:

[0024] A screening bin 1, the screening bin 1 comprises a plurality of bin bodies 2 arranged at intervals, cross beams 3 are arranged on both sides of the top surface of the screening bin 1; a screening mesh plate 4 is arranged on the top of the bin body 2, and the meshes of the plurality of screening mesh plates 4 are arranged from small to large; the inner side of the bin body 2 is a slope structure, and the bin body 2 is provided with a discharge port on the lower side of the slope;

[0025] The machine base 5, the screening bin 1 is fixed to the top surface of the side of the machine base 5, and a plurality of screening hoppers 6 are arranged on the machine base 5; the screening hoppers 6 are connected to the discharge port; slideways 7 are arranged on both sides of the machine base 5;

[0026] The material transfer unit comprises two table plates 8, a roller seat 9 is fixed on the top surface of the table plate 8, and an active roller 10 and a driven roller 11 are respectively installed on the two roller seats 9; the active roller 10 is installed with a material transfer motor 12 outside the roller seat 9; a grid belt 13 is sleeved on the outside of the active roller 10 and the driven roller 11; a panel 14 is movably fitted on the top surface of the grid belt 13, and the panel 14 is fixed to the crossbeam 3; a plurality of debris removal pipes 15 are arranged on the top surface of the panel 14, and the debris removal pipes 15 are connected to a negative pressure fan; a feed hopper 16 is arranged on the end of the panel 14 close to the active roller 10; a guide rail body 17 movably fitted with the slide 7 is fixed on the inner side of the table plate 8.

[0027] During operation, the corresponding screening bin 1 is selected according to the seed screening mesh requirements, and the base 5 corresponding to the screening bin 1 is movably embedded in the guide rail body 17; then, the seeds are fed into the feed hopper 16, and then, the active roller 10 is driven to rotate by the feeding motor 12, thereby driving the grid belt 13 to transfer and automatically spread the seeds, and the seeds are filled into the grating holes of the grid belt 13, and the thickness of the cloth is limited by the enclosure 14; when the seeds are transferred along the grid belt 13, the seeds can be fed into each screening mesh plate 4, and when the seeds roll, impurities can be removed from the seeds. The seeds are peeled off, and the heavy impurities are sent to the bin 2, the discharge port and the screening hopper 6 in sequence through the first two levels of screening mesh plates 4; and through the cooperation of the negative pressure fan and the impurity removal pipe 15, negative pressure can be accurately provided to each grille hole of the grille belt 13, so as to extract the light impurities from the grille holes; after the impurity removal is completed, the seeds are transferred to the subsequent screening mesh plates 4 again through the grille belt 13, and the seeds are screened by particle size classification through the screening mesh plates 4. Finally, after the screening is completed, the large impurities staying on the grille belt 13 are continuously transferred forward until the large impurities are discharged from the screening bin 1.

[0028] An open groove 18 is provided on the top of the bin body 2, and the screening screen plate 4 is movably fitted into the inner side of the open groove 18; the crossbeam 3 is pressed onto the top surface of the open groove 18; a vibration gap is provided between the top surface of the screening screen plate 4 and the crossbeam 3; a driving shaft 19 is movably passed through the inner side of the bin body 2 via bearings; a plurality of cams 20 are fixed on the driving shaft 19 at intervals; the cam 20 abuts against the bottom surface of the screening screen plate 4; a belt reel is fixed at one end of the driving shaft 19, and the belt reel is connected to a screening motor 21 via a transmission belt.

[0029] When the grid belt 13 moves intermittently, the seeds are driven to enter the top surface of the screening mesh plate 4. In the process of the seeds being pushed, the seeds can be rubbed to peel off the attachments on the seeds, so that they fall through the mesh holes of the screening mesh plate 4 and move intermittently through the grid belt 13. When the seeds stay on the screening mesh plate 4, the screening motor 21 is activated, and the screening motor 21 drives the belt disk to rotate through the transmission belt, and drives the drive shaft 19 to rotate through the belt disk, and the drive shaft 19 drives the cam 20 to rotate. When the protruding end of the cam 20 abuts against the screening mesh plate 4, and pushes the screening mesh plate 4 up, then, when the protruding end of the cam 20 rotates the screening mesh plate 4, the screening mesh plate 4 returns to its original position, so that the screening mesh plate 4 vibrates up and down, and the stripped impurities can be separated from the screening mesh plate 4 by vibration, and the seeds can be graded and screened; when the grid belt 13 is driven and the screening mesh plate 4 vibrates, the seeds are screened through the mesh holes of the screening mesh plate 4 to remove heavy impurities and light impurities sucked by the negative pressure fan, thereby improving the efficiency of seed impurity removal and grade screening.

[0030] The table 8 is provided with an impurity collecting hopper 22 at one end of the driven roller 11 . When the seeds are screened, the seed shells, stems and other large particles of impurities are sent to the impurity collecting hopper 22 and collected by the impurity collecting hopper 22 .

[0031] A manual screw slide 23 is fixed to the side of the top surface of the table plate 8, and the roller seat 9 of the active roller 10 is fixed to the slider of the manual screw slide 23; during operation, the position of the roller seat 9 can be adjusted by the manual screw slide 23, so that the tension of the grid belt 13 can be adjusted, so that the grid belt 13 can drive the seeds forward, and at the same time, when the cam 20 pushes up the screening mesh plate 4, excessive tension of the grid belt 13 is avoided.

[0032] A protective cover 24 is hingedly connected to the outside of the active roller 10 , and the protective cover 24 can protect the active roller 10 and prevent foreign matter from entering the active roller 10 .

[0033] The roller seat 9 is provided with a receiving plate 25, which is in contact with the end of the bin body 2 and is flush with the top surface of the screening mesh 4. Before the seeds enter the screening mesh 4, or after the screening is completed and sent out of the screening mesh 4, the seeds are received by the receiving plate 25 to prevent the seeds from slipping off the grid belt 13.

[0034] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A multi-stage seed screening device for agricultural production, characterized in that: include: The screening bin comprises a plurality of bin bodies arranged at intervals, and beams are arranged on both sides of the top surface of the screening bin; a screening mesh plate is arranged on the top of the bin body, and the mesh holes of the plurality of screening mesh plates are arranged from small to large; the inner side of the bin body is a slope structure, and the bin body is provided with a discharge port on the lower side of the slope; The machine base, the screening bin is fixed to the top surface of the side of the machine base, and a plurality of screening hoppers are arranged on the machine base; the screening hoppers are connected to the discharge port; slideways are arranged on both sides of the machine base; The material transfer unit comprises two table plates, a roller seat is fixed on the top surface of the table plate, and a driving roller and a driven roller are respectively installed on the two roller seats; the driving roller is installed with a material transfer motor outside the roller seat; a grille belt is sleeved on the outside of the driving roller and the driven roller; a panel is movably fitted on the top surface of the grille belt, and multiple debris removal pipes are arranged on the top surface of the panel, and the debris removal pipes are connected to a negative pressure fan; the panel is fixed to a crossbeam; a feed hopper is arranged on one end of the panel close to the driving roller; a guide rail body movably engaged with a slideway is fixed on the inner side of the table plate.

2. The multi-stage seed screening device for agricultural production according to claim 1, characterized in that: An open groove is provided on the top of the bin body, and the screening screen plate is movably embedded in the inner side of the open groove; the crossbeam is pressed onto the top surface of the open groove; a vibration gap is provided between the top surface of the screening screen plate and the crossbeam; a driving shaft movably passes through the inner side of the bin body through bearings; a plurality of cams are fixed on the driving shaft at intervals; the cam abuts against the bottom surface of the screening screen plate; a belt reel is fixed at one end of the driving shaft, and the belt reel is connected to the screening motor through a transmission belt.

3. The multi-stage seed screening device for agricultural production according to claim 1, characterized in that: The table is provided with an impurity collecting hopper at one end of the driven roller.

4. The multi-stage seed screening device for agricultural production according to claim 1, characterized in that: A manual screw slide is fixed on the side of the top surface of the table plate, and the roller seat of the active roller is fixed to the slider of the manual screw slide.

5. The multi-stage seed screening device for agricultural production according to claim 1, characterized in that: A protective cover body is hingedly connected to the outside of the active roller.

6. The multi-stage seed screening device for agricultural production according to claim 1, characterized in that: The roller seat is provided with a material receiving plate, the material receiving plate is in contact with the end of the bin body, and the material receiving plate is flush with the top surface of the screening mesh plate.

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