A dry grain screening mechanism

Abstract

The utility model relates to the technical field of grain screening, and discloses a dry grain screening mechanism, including a shell, the top of the shell is fixedly connected to a feed hopper, the rear side of the shell is fixedly connected to a mounting seat, the top of the mounting seat is installed with a driving assembly, the bottom of the driving assembly is fixedly connected to a rotating plate, the bottom of the rotating plate is fixedly connected to a round rod, the outer periphery of the round rod is rotatably connected to a connecting plate, the middle part of the shell is slidably connected to a first screen, a second screen and a third screen in sequence from top to bottom, and the end of the connecting plate away from the rotating plate is rotatably connected to the outside of the second screen. In the utility model, through the cooperation of the first screen, the second screen, the third screen, the connecting plate and the like, the rotating plate can push the second screen through the connecting plate, and at the same time, under the connection of the connecting rod, the first screen, the second screen and the third screen can be shaken synchronously, thereby improving the screening efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of grain screening, in particular to a dry grain screening mechanism. Background Art

[0002] Cereals cover a wide range, including rice, wheat, millet, soybeans and other grains. Cereals include rice, wheat, millet, soybeans, etc., mainly plant seeds and fruits. While shriveled grains can be used for industrial production, plump grains can be used as food or seeds. In order to classify grains for different uses, a screening mechanism is needed to screen the grains.

[0003] After searching, Chinese patent announcement number: CN219400942U discloses a dry grain screening mechanism, including a fixed frame, an annular supporting frame is provided on the fixed frame, an arc-shaped matching opening is provided on the annular supporting frame, the top of the annular supporting frame is fixedly connected to a motor, the bottom of the motor is fixedly connected to a rotating rod, the bottom of the rotating rod passes through the fixed frame and is fixedly connected to a pushing frame; one end of the fixed frame is fixedly connected to an extension plate.

[0004] In the above technology, grains are screened by rotating the first sieve, the second sieve and the third sieve with different apertures to the position of the arc-shaped matching opening. Different grains can be screened by replacing the sieves with different apertures without disassembling the sieves, or grains of different specifications can be screened. However, in actual use, when screening grains of different specifications, it is necessary to repeatedly switch the sieves, which is time-consuming, resulting in slow grain screening efficiency and affecting work results. Therefore, a dry grain screening mechanism is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a dry grain screening mechanism, which aims to improve the problem in the above technology that replacing screens of different specifications is time-consuming and affects work results.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a dry grain screening mechanism, comprising an outer shell, the top of the outer shell is fixedly connected to a feed hopper, the rear side of the outer shell is fixedly connected to a mounting seat, the top of the mounting seat is installed with a driving assembly, the bottom of the driving assembly is fixedly connected to a rotating plate, the bottom of the rotating plate is fixedly connected to a round rod, the outer periphery of the round rod is rotatably connected to a connecting plate, the middle part of the outer shell is slidably connected to the first screen, the second screen and the third screen in sequence from top to bottom, the end of the connecting plate away from the rotating plate is rotatably connected to the outside of the second screen, the first screen, the second screen and the third screen are fixedly connected to a plurality of connecting rods on the side away from the connecting plate, and the outer side of the outer shell is slidably connected to a plurality of collecting assemblies.

[0007] As a further description of the above technical solution: the driving assembly includes a motor, the motor is fixedly connected to the top of the mounting seat, the output end of the motor is fixedly connected to a rotating rod, and the rotating plate is fixedly connected to the end of the rotating rod away from the motor.

[0008] As a further description of the above technical solution: the collection component includes multiple collection buckets, which are respectively slidably connected to the left and right sides of the shell, and the collection buckets are fixedly connected to a limiting block on one side close to the shell, and the limiting block is slidably connected to the middle part of the shell.

[0009] As a further description of the above technical solution: a collection box is slidably connected to the middle of the shell, a vacuum pump is fixedly connected to the inner bottom of the collection box, a filter cover is fixedly connected to the middle of the shell, a through hole is opened in the middle of the front wall of the collection box, and a snap-fit ​​assembly is installed on the front side of the shell.

[0010] As a further description of the above technical solution: the locking assembly includes a stopper, which is rotatably connected to the front side of the shell, and the stopper is in contact with the collection box, and a pull rod is fixedly connected to the front side of the collection box.

[0011] As a further description of the above technical solution: sliders are fixedly connected to the outer sides of the first screen, the second screen and the third screen, and the sliders are slidably connected to the middle part of the shell.

[0012] As a further description of the above technical solution: a limiting groove is provided on the outer wall of the shell, and the limiting block is slidably connected to the middle part of the limiting groove.

[0013] As a further description of the above technical solution: a plurality of drainage blocks are fixedly connected to the interior of the shell, and the plurality of drainage blocks are in contact with the first screen, the second screen, and the third screen respectively.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, through the cooperation of the first screen, the second screen, the third screen, the connecting plate and other structures, the connecting plate can pull the first screen, the second screen and the third screen to shake, so that the driving motor drives the rotating plate to rotate, and the rotating plate can push the second screen through the connecting plate. At the same time, under the connection of the connecting rod, the first screen, the second screen and the third screen can shake synchronously, so that the first screen can intercept larger grains and introduce them into a collection bucket, smaller grains are intercepted by the second screen and introduced into a collection bucket, and the smallest grains are intercepted by the third screen and introduced into the last collection bucket. There is no need to switch the screens, and grains of different specifications can be quickly screened, thereby improving screening efficiency.

[0016] 2. In the utility model, through the cooperation of the collection box, filter cover, vacuum pump, through hole and other structures, the vacuum pump can extract the air in the outer shell, so that the floating dust in the grain can be extracted by the vacuum pump and fall into the collection box, thereby reducing the floating dust collected after screening and improving the screening quality of the grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a dry grain screening mechanism proposed by the present invention;

[0018] Figure 2 This is a structural schematic diagram of a rotating plate of a dry grain screening mechanism proposed in the present invention;

[0019] Figure 3 This is a structural schematic diagram of a drainage block of a dry grain screening mechanism proposed in the present invention;

[0020] Figure 4 This is a structural schematic diagram of a vacuum pump for a dry grain screening mechanism proposed in the utility model.

[0021] Legend:

[0022] 1. Outer shell; 2. Feed hopper; 3. Motor; 4. Mounting base; 5. First screen; 6. Filter cover; 7. Third screen; 8. Connecting rod; 9. Collection bucket; 10. Limit block; 11. Collection box; 12. Through hole; 13. Pull rod; 14. Stop block; 15. Second screen; 16. Rotating plate; 17. Round rod; 18. Connecting plate; 19. Slider; 20. Drainage block; 21. Rotating rod; 22. Limit groove; 23. Vacuum pump. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 3 The utility model provides an embodiment of a dry grain screening mechanism, comprising a shell 1, a feed hopper 2 is fixedly connected to the top of the shell 1, a mounting base 4 is fixedly connected to the rear side of the shell 1, a driving assembly is installed on the top of the mounting base 4, a rotating plate 16 is fixedly connected to the bottom of the driving assembly, the driving assembly comprises a motor 3, the motor 3 is fixedly connected to the top of the mounting base 4, the output end of the motor 3 is fixedly connected to a rotating rod 21, the rotating plate 16 is fixedly connected to the end of the rotating rod 21 away from the motor 3, and the bottom of the rotating plate 16 is fixedly connected to a round rod 17, the outer periphery of the round rod 17 is rotatably connected to the connecting plate 18, and the middle part of the shell 1 is slidably connected to the first screen 5, the second screen 15 and the third screen 7 from top to bottom in sequence, and the outer sides of the first screen 5, the second screen 15 and the third screen 7 are fixedly connected with a slider 19, and the slider 19 is slidably connected to the middle part of the shell 1, and the end of the connecting plate 18 away from the rotating plate 16 is rotatably connected to the outer side of the second screen 15, and the first screen 5, the second screen 15 and the third screen 7 are fixedly connected to the side away from the connecting plate 18 with multiple connecting rods 8.

[0025] During use, the grains are poured from the feed hopper 2 into the outer shell 1, and the driving motor 3 drives the rotating rod 21 to rotate. The rotating rod 21 will drive the round rod 17 to rotate together while rotating. The round rod 17 will push or pull the connecting plate 18 while rotating, so that the connecting plate 18 pushes or pulls the second screen 15 to shake in the middle of the outer shell 1, and under the connection of the connecting rod 8, the second screen 15, the first screen 5, and the third screen 7 can shake synchronously, so as to screen the grains falling on the first screen 5, intercept the larger grains, and the smaller grains will fall on the second screen 15 for screening again, so as to improve the screening efficiency of grains of different specifications, avoid the time wasted in replacing the screening net, and improve work efficiency.

[0026] Reference Figure 1-Figure 3, multiple collecting components are slidably connected to the outside of the shell 1, and the collecting components include multiple collecting buckets 9, which are slidably connected to the left and right sides of the shell 1 respectively, and the collecting bucket 9 is fixedly connected to the side close to the shell 1 to form a limiting block 10. The limiting block 10 is slidably connected to the middle of the shell 1. A limiting groove 22 is provided on the outer wall of the shell 1, and the limiting block 10 is slidably connected to the middle of the limiting groove 22. A plurality of drainage blocks 20 are fixedly connected to the inside of the shell 1, and the plurality of drainage blocks 20 are respectively in contact with the first screen 5, the second screen 15, and the third screen 7.

[0027] When in use, the first screen 5, the second screen 15, and the third screen 7 are all inclined. When the first screen 5 intercepts larger grains, they will slide from the discharge port into a collection bucket 9, and the smaller grains will be intercepted by the second screen 15 and slide from another discharge port into a collection bucket 9. At the same time, the smallest grains will be intercepted by the third screen 7 and slide from another discharge port into the last collection bucket 9, so as to quickly collect grains of different specifications.

[0028] Reference Figure 1 and Figure 4 The middle part of the shell 1 is slidably connected to the collection box 11, the inner bottom of the collection box 11 is fixedly connected to the vacuum pump 23, the middle part of the shell 1 is fixedly connected to the filter cover 6, the middle part of the front wall of the collection box 11 is provided with a through hole 12, the front side of the shell 1 is installed with a snap-fit ​​assembly, the snap-fit ​​assembly includes a stopper 14, the stopper 14 is rotatably connected to the front side of the shell 1, the stopper 14 is in contact with the collection box 11, and the front side of the collection box 11 is fixedly connected with a pull rod 13.

[0029] During use, the vacuum pump 23 is driven to extract the air in the shell 1 and discharge it from the through hole 12, so that the floating dust generated when the grains are screened will be drawn by the vacuum pump 23 and fall into the collection box 11. At the same time, the floating dust is intercepted under the action of the filter cover 6 to prevent the floating dust from damaging the vacuum pump 23, so as to reduce the amount of floating dust collected along with the grains and improve the quality of the grains after screening. At the same time, the collection box 11 can be fixed under the action of the block 14 to prevent the collection box 11 from sliding out of the middle of the shell 1 due to shaking.

[0030] Working principle: The driving motor 3 drives the rotating rod 21 to rotate, so that the rotating rod 21 pulls the rotating plate 16 to rotate, and the rotating plate 16 drives the connecting plate 18 to move through the round rod 17, so that the connecting plate 18 can push or pull the second screen 15, and under the connection of the connecting rod 8, the first screen 5, the second screen 15, and the third screen 7 can move synchronously, so that grains of different specifications can be directly screened layer by layer and introduced into different collection buckets 9, thereby improving the screening efficiency of grains of different specifications.

[0031] The vacuum pump 23 is driven to extract the air in the shell 1, so that the floating dust during the screening process of the grain can be sucked into the middle of the collection box 11. At the same time, under the action of the filter cover 6, the floating dust is prevented from damaging the vacuum pump 23, thereby reducing the amount of floating dust collected along with the grain and improving the quality of the grain after screening.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dry grain screening mechanism, comprising a housing (1), characterized in that: The top of the shell (1) is fixedly connected to a feed hopper (2), the rear side of the shell (1) is fixedly connected to a mounting seat (4), the top of the mounting seat (4) is mounted with a driving assembly, the bottom of the driving assembly is fixedly connected to a rotating plate (16), the bottom of the rotating plate (16) is fixedly connected to a round rod (17), the outer circumference of the round rod (17) is rotatably connected to a connecting plate (18), the middle part of the shell (1) is slidably connected to a first screen (5), a second screen (15) and a third screen (7) in sequence from top to bottom, one end of the connecting plate (18) away from the rotating plate (16) is rotatably connected to the outside of the second screen (15), the first screen (5), the second screen (15) and the third screen (7) are fixedly connected to a plurality of connecting rods (8) on one side away from the connecting plate (18), and the outer side of the shell (1) is slidably connected to a plurality of collecting assemblies.

2. A dry grain screening mechanism according to claim 1, characterized in that: The driving assembly comprises a motor (3), the motor (3) being fixedly connected to the top of the mounting seat (4), the output end of the motor (3) being fixedly connected to a rotating rod (21), and the rotating plate (16) being fixedly connected to an end of the rotating rod (21) away from the motor (3).

3. A dry grain screening mechanism according to claim 1, characterized in that: The collecting assembly comprises a plurality of collecting barrels (9), the plurality of collecting barrels (9) being slidably connected to the left and right sides of the outer shell (1), respectively; a side of the collecting barrel (9) close to the outer shell (1) is fixedly connected to a limiting block (10), and the limiting block (10) is slidably connected to the middle part of the outer shell (1).

4. A dry grain screening mechanism according to claim 1, characterized in that: A collection box (11) is slidably connected to the middle of the shell (1), a vacuum pump (23) is fixedly connected to the inner bottom of the collection box (11), a filter cover (6) is fixedly connected to the middle of the shell (1), a through hole (12) is provided in the middle of the front wall of the collection box (11), and a snap-fit ​​assembly is installed on the front side of the shell (1).

5. A dry grain screening mechanism according to claim 4, characterized in that: The engaging assembly comprises a stopper (14), the stopper (14) being rotatably connected to the front side of the housing (1), the stopper (14) being in contact with the collection box (11), and a pull rod (13) being fixedly connected to the front side of the collection box (11).

6. A dry grain screening mechanism according to claim 1, characterized in that: The outer sides of the first screen (5), the second screen (15) and the third screen (7) are all fixedly connected with a slider (19), and the slider (19) is slidably connected to the middle part of the housing (1).

7. A dry grain screening mechanism according to claim 3, characterized in that: The outer wall of the housing (1) is provided with a limiting groove (22), and the limiting block (10) is slidably connected to the middle part of the limiting groove (22).

8. A dry grain screening mechanism according to claim 1, characterized in that: A plurality of drainage blocks (20) are fixedly connected to the interior of the housing (1), and the plurality of drainage blocks (20) are in contact with the first screen (5), the second screen (15), and the third screen (7), respectively.

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