Grain impurity screening device
By designing a dual screening mechanism and motor-driven screen barrel rotation, the problem of difficult to screen larger or smaller impurities and extrusion wear in the prior art is solved, and efficient and non-destructive grain impurities screening is achieved.
Patent Information
- Application Number
- CN202421008388.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Existing grain impurity screening devices are difficult to effectively screen out larger or smaller impurities, and it is easy to cause extrusion and wear of the grain during the screening process.
A grain impurity screening device including two screening mechanisms is designed. The first screening mechanism realizes the screening of larger impurities through a rotatable screening barrel and a guide block, and the second screening mechanism is screened through a screening hole. Smaller impurities and drive the screen barrel to rotate through the motor to avoid extrusion wear.
The separation and screening of larger and smaller impurities is achieved, which avoids extrusion wear of grains and improves screening efficiency and quality.
Smart Images
Figure CN222287841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grain impurity removal, in particular to a grain impurity screening device. Background Art
[0002] Cereals cover a wide range, including rice, soybeans and other grains, mainly plant seeds and fruits. They are the traditional staple food of many Asian people. Cereals mainly refer to the seeds of grass plants. Grains mainly include rice, wheat, corn and other granular grains, such as millet, black rice, buckwheat, oats, sorghum, etc.
[0003] When using grains for brewing, grinding grains or selecting grain seeds, the grains need to be screened to remove impurities (dust, dirt lumps, etc.) in the grains to ensure the quality of the grains.
[0004] For example, a grain seed screening device with patent application number 202321328326.8 discloses "a grain seed screening device is disclosed, including an empty box, a hydraulic rod is fixedly connected to the middle and upper parts of the left and right sides of the outer wall of the empty box, the output end of the hydraulic rod is fixedly connected to a T-shaped plate, the bottom of the T-shaped plate is fixedly connected to a first insulating plate, and the middle parts of the left and right sides of the empty box are both provided with through openings. In the utility model, by placing grain seeds on the placement board, the first insulating plate and the second insulating plate rub to generate static electricity, the second insulating plate absorbs impurities, and the first The insulating plate is placed at the bottom of the second insulating plate to receive and carry out, which prevents the grain husks and shriveled seeds from entering the screening equipment and affecting the screening quality. The lifting plate moves up and down, driving the pressing column to press one side of the placement plate, and then with the bending of the spring, the grain seeds slide to one side, which is more convenient and faster to collect, reducing the workload. "Although the above structure can screen out the husks in the grains and the shriveled grains in the grains, it cannot screen out impurities in some larger or smaller grains.
[0005] In order to solve the above problems, we provide a grain impurity screening device that can screen out larger and smaller impurities in grains separately and avoid squeezing and wearing the grains. Utility Model Content
[0006] The utility model aims to overcome the deficiencies in the prior art and provide a grain impurity screening device.
[0007] The purpose of the utility model is achieved as follows: a grain impurity screening device comprises a box body, wherein a feeding hopper is arranged at the upper end of the box body, a first screening mechanism and a second screening mechanism are arranged in the box body, the lower end of the feeding hopper is connected to the first screening mechanism, a second screening mechanism is arranged below the first screening mechanism, and the first screening mechanism;
[0008] Furthermore, the first screening mechanism screens out larger impurities in the grains, and the grains after the impurities are screened out enter the second screening mechanism, and the second screening mechanism screens out smaller impurities in the grains.
[0009] Furthermore, the first screening mechanism passes through the box body on the left side, and an impurity discharge bucket is arranged on the left side of the first screening mechanism.
[0010] Furthermore, the second screening mechanism passes through the box body on the right side, and a discharge hopper is provided on the right side of the second screening mechanism.
[0011] Furthermore, the first screening mechanism includes a screen barrel, partition one, and partition two. The right end of the screen barrel penetrates and is rotatably connected to partition one and partition two, and the left end of the screen barrel penetrates and is rotatably connected to the left side of the box.
[0012] Furthermore, a plurality of material guide blocks are evenly distributed on the inner side of the screen barrel.
[0013] Furthermore, the first screening mechanism also includes a motor, and the motor drives the screen barrel to rotate.
[0014] Furthermore, the motor is fixed on partition one, the motor output end passes through partition one, a driving gear is arranged at the motor output end, a driven gear is arranged on the screen barrel between partition one and partition two, and the driving gear and the driven gear are meshed with each other.
[0015] Furthermore, a feeding port is arranged on the right side of the partition, a feeding pipe is arranged between the feeding port and the feeding hopper, the upper end of the feeding pipe is connected to the bottom of the feeding hopper, and the lower end of the feeding pipe is connected to the feeding port.
[0016] Furthermore, the screen barrel is provided with side baffles in the front and rear directions respectively, and a screening area is formed between the side baffles and the partition box body at the position of the screen barrel. A material receiving hopper is provided below the screening area, and a connecting pipe is provided below the material receiving hopper, and the lower end of the connecting pipe is connected to the second screening mechanism.
[0017] Furthermore, the screening mechanism 2 has the same structure as the screening mechanism 1, and the mesh openings of the screen in the screening mechanism 1 are larger than the mesh openings of the screen in the screening mechanism 2.
[0018] When the utility model is used, grains are placed in a feeding hopper, and the grains enter the screen barrel of the first screening mechanism through a discharge pipe and a discharge port, and a controller controls the motors in the two screening mechanisms to rotate, and when the motors rotate, the screen barrels are driven to rotate, and the rotation of the screen barrels drives the material guide blocks to rotate, and the grains are driven by the screen barrels to roll, and the grains are driven by the material guide blocks to move to the left side, and while the grains are rolling, the grains and impurities that are smaller than or equal to the size of the grains fall into the receiving hopper below through the sieve holes in the screen barrel, and larger impurities are retained in the screen barrel, and while the screen barrel rotates, the larger impurities are discharged to the impurity discharge hopper through the left side of the screen barrel in cooperation with the material guide blocks.
[0019] The grains after passing through the first screening mechanism enter the screening barrel of the second screening mechanism through the receiving hopper. When the screening barrel of the second screening mechanism rotates, smaller impurities in the grains are screened out through the sieve holes on the sieve barrel, and the smaller impurities are discharged to the outside of the sieve barrel of the second screening mechanism through the sieve holes, and then discharged through the impurity discharge port below the second screening mechanism. The grains after screening by the second screening mechanism are driven by the rotation of the sieve barrel to be discharged to the discharge hopper on the right, thereby achieving the screening out of larger and smaller impurities.
[0020] Beneficial effects: The present application can screen out larger impurities and smaller impurities respectively through two screenings, thereby realizing the screening of impurities in grains; and through the rollable screen barrel, the grains can be tumbled in cooperation with the guide block, so that the grains can be better screened out through the screen holes of the screen barrel of the first screening mechanism, and the impurities screened out by rolling the grains can avoid squeezing and wear on the grains; and the grain impurities driven by the guide block are discharged through the impurity discharge hopper; the smaller impurities are screened out through the second screening mechanism, and discharged to the discharge hopper driven by the guide block, thereby realizing the screening and removal of grain impurities. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the structure of the utility model.
[0022] Figure 2 It is a schematic diagram of the internal structure of the box of the utility model.
[0023] Figure 3 It is a schematic diagram of the structure of the first screening mechanism of the utility model.
[0024] Figure 4 It is a partial structural sectional view of the utility model.
[0025] Description of reference numerals:
[0026] 1. Box body, 2. Controller, 3. Feed hopper, 4. Impurity discharge hopper, 5. Discharge hopper, 6. Feeding port, 7. Motor, 8. Side baffle, 9. Connecting pipe, 10. Partition 2, 11. Screen barrel, 12. Guide block, 13. Screen hole, 14. Receiving hopper, 15. Driven gear, 16. Driving gear, 17. Partition 1, 18. Feeding pipe. DETAILED DESCRIPTION
[0027] Embodiment 1, as Figure 1 As shown in FIG. 4 , the purpose of the utility model is achieved as follows: a grain impurity screening device comprises a box body 1, wherein a feeding hopper 3 is arranged at the upper end of the box body 1, a first screening mechanism and a second screening mechanism are arranged in the box body 1, a lower end of the feeding hopper 3 is connected to the first screening mechanism, a second screening mechanism is arranged below the first screening mechanism, and a first screening mechanism;
[0028] The first screening mechanism screens out larger impurities in the grains, and the grains after the impurities are screened out enter the second screening mechanism, and the second screening mechanism screens out smaller impurities in the grains. The first screening mechanism runs through the box body 1 on the left, and an impurity discharge hopper 4 is provided on the left side of the first screening mechanism. The second screening mechanism runs through the box body 1 on the right, and a discharge hopper 5 is provided on the right side of the second screening mechanism.
[0029] The first screening mechanism includes a screen barrel 11, a partition 17, and a partition 2 10. The right end of the screen barrel 11 penetrates and is rotatably connected to the partition 17 and the partition 2 10, and the left end of the screen barrel 11 penetrates and is rotatably connected to the left side of the box body 1. A plurality of guide blocks 12 are evenly distributed on the inner side of the screen barrel 11. The first screening mechanism also includes a motor 7, which drives the screen barrel 11 to rotate. The motor 7 is fixed on the partition 17, and the output end of the motor 7 penetrates the partition 17. The output end of the motor 7 is provided with a driving gear 16. The screen barrel 11 between the partition 17 and the partition 2 10 is provided with a driven gear 15, and the driving gear 16 and the driven gear 15 are meshed with each other. A discharge port 6 is provided on the right side of the partition 17, and a discharge pipe is provided between the discharge port 6 and the feeding hopper 3. The upper end of the discharge pipe is connected to the bottom of the feeding hopper 3, and the lower end of the discharge pipe is connected to the discharge port 6.
[0030] The screen barrel 11 is provided with side baffles 8 in the front and rear directions, and a screening area is formed between the side baffles 8 and the partition 2 10 box body 1 at the location of the screen barrel 11. A receiving hopper 14 is provided below the screening area, and a connecting pipe 9 is provided below the receiving hopper 14. The lower end of the connecting pipe 9 is connected to the second screening mechanism. The second screening mechanism has the same structure as the first screening mechanism, and the sieve holes 13 of the screen in the first screening mechanism are larger than the sieve holes 13 of the screen in the second screening mechanism; impurities larger than the grain size are screened out through the sieve holes 13 of the first screening mechanism, and impurities smaller than the grain size are screened out through the sieve holes 13 of the second screening mechanism, and a discharge port is provided below the second screening mechanism to discharge smaller impurities.
[0031] When the utility model is used, grains are placed in the feeding hopper 3, and the grains enter the screen barrel 11 of the first screening mechanism through the discharge pipe and the discharge port 6. The controller 2 controls the motors 7 in the two screening mechanisms to rotate. When the motor 7 rotates, it drives the screen barrel 11 to rotate, and the rotation of the screen barrel 11 drives the guide block 12 to rotate. The grains are driven by the screen barrel 11 to roll, and the grains are driven by the guide block 12 to move to the left. While the grains are rolling, the grains and impurities that are smaller than or equal to the size of the grains fall into the receiving hopper 14 below through the sieve holes 13 in the screen barrel 11, and larger impurities are retained in the screen barrel 11. While the screen barrel 11 rotates, the guide block 12 is used to discharge the larger impurities through the left side of the screen barrel 11 to the impurity discharge hopper 4.
[0032] The grains after passing through the first screening mechanism enter the screen barrel 11 of the second screening mechanism through the receiving hopper 14. When the screen barrel 11 of the second screening mechanism rotates, smaller impurities in the grains are screened out through the screen holes 13 on the screen barrel 11. The smaller impurities are discharged to the outside of the screen barrel 11 of the second screening mechanism through the screen holes 13, and then discharged through the impurity discharge port below the second screening mechanism. The grains after screening by the second screening mechanism are driven by the rotation of the screen barrel 11 to be discharged to the discharge hopper 5 on the right, thereby achieving the screening out of larger impurities and smaller impurities.
[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A grain impurity screening device, comprising a box, characterized in that: The upper end of the box body is provided with a feeding hopper, a first screening mechanism and a second screening mechanism are provided in the box body, the lower end of the feeding hopper is connected to the first screening mechanism, and the second screening mechanism and the first screening mechanism are provided below the first screening mechanism; The first screening mechanism screens out larger impurities in the grains, and the grains after the impurities are screened out enter the second screening mechanism, and the second screening mechanism screens out smaller impurities in the grains.
2. A grain impurity screening device according to claim 1, characterized in that: The first screening mechanism passes through the box body on the left side, and an impurity discharge bucket is arranged on the left side of the first screening mechanism.
3. A grain impurity screening device according to claim 1, characterized in that: The second screening mechanism passes through the box body on the right side, and a discharge hopper is arranged on the right side of the second screening mechanism.
4. A grain impurity screening device according to claim 2, characterized in that: The first screening mechanism includes a screen barrel, a partition plate 1 and a partition plate 2. The right end of the screen barrel penetrates and is rotatably connected to the partition plate 1 and the partition plate 2, and the left end of the screen barrel penetrates and is rotatably connected to the left side of the box.
5. A grain impurity screening device according to claim 4, characterized in that: A plurality of material guide blocks are evenly distributed on the inner side of the screen barrel.
6. A grain impurity screening device according to claim 5, characterized in that: The first screening mechanism also includes a motor, which drives the screening barrel to rotate.
7. A grain impurity screening device according to claim 6, characterized in that: The motor is fixed on the partition plate 1, and the output end of the motor passes through the partition plate 1. A driving gear is arranged on the output end of the motor. A driven gear is arranged on the screen barrel between the partition plates 1 and 2, and the driving gear and the driven gear are meshed with each other.
8. A grain impurity screening device according to claim 7, characterized in that: A feeding port is arranged on the right side of the partition plate, a feeding pipe is arranged between the feeding port and the feeding hopper, the upper end of the feeding pipe is connected to the bottom of the feeding hopper, and the lower end of the feeding pipe is connected to the feeding port.
9. A grain impurity screening device according to claim 8, characterized in that: The screen barrel is provided with side baffles in the front and rear directions respectively, and a screening area is formed between the side baffles and the partition box body at the position of the screen barrel. A material receiving hopper is provided below the screening area, and a connecting pipe is provided below the material receiving hopper, and the lower end of the connecting pipe is connected to the second screening mechanism.
10. A grain impurity screening device according to claim 9, characterized in that: The second screening mechanism has the same structure as the first screening mechanism, and the mesh openings of the screen in the first screening mechanism are larger than the mesh openings of the screen in the second screening mechanism.