Corn grade classifying and screening device
By designing a corn grading and screening device and utilizing adjustment and buffer structures, low-cost multi-grade corn screening was achieved, reducing corn kernel damage and solving the practicality and cost issues in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-03
AI Technical Summary
Existing corn screening machines suffer from low practicality or high cost, making it difficult to achieve low-cost screening of multiple grades of corn.
A corn grading and screening device was designed. By adjusting the combination of structure and buffer structure, the screen plate can be moved horizontally and screened for multiple sizes. The spring-loaded buffer plate reduces damage to corn kernels.
It enables screening of corn of various grades, reduces equipment costs, and minimizes damage to corn kernels during the screening process.
Smart Images
Figure CN224072699U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of corn food processing, specifically, it relates to a corn grading and sorting device. Background Technology
[0002] Corn, scientifically known as maize, is a widely cultivated food crop belonging to the genus *Zea* in the family Poaceae. It is not only an important food source but also has wide applications in industry, animal feed, and energy.
[0003] When processing corn, it is necessary to classify it by grade and then use the classified corn for the required purpose. However, the problems with commonly used corn screening machines are that either the low-cost screening machines can classify fewer grades, or the screening machines that can accurately classify multiple corn grades are expensive. The former has the problem of low practicality, while the latter has the problem of high cost. Therefore, there is an urgent need for a corn screening device that is low-cost and can screen multiple grades.
[0004] In view of this, this utility model is hereby proposed. Utility Model Content
[0005] To solve the aforementioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0006] A corn grading and sorting device, comprising:
[0007] The frame is a tube with an L-shaped cross section. The inner wall of the frame opening is symmetrically connected to the drive shafts, which are cylindrical. The drive shafts are symmetrically sleeved with drive belts, and the drive belts are fixedly connected with placement rods, which are cylindrical. The outer wall of the frame is symmetrically fixed with motors, which can drive the symmetrical drive shafts to rotate.
[0008] The adjustment structure is set on the wall of the frame for screening corn. The adjustment structure includes: an adjustment groove, a connecting rod and a screen plate. The adjustment groove is opened through the side wall of the frame. The connecting rod is slidably connected in the adjustment groove. The screen plate is fixedly connected to the wall of the connecting rod and is located between symmetrical drive shafts.
[0009] In a preferred embodiment of this utility model, the adjustment groove can be adapted to the thickness of the connecting rod and the sieve plate. The connecting rod is rectangular and the sieve plate is a right-angled triangular plate. The connecting rod is symmetrically arranged on the wall of the sieve plate, and the symmetrical connecting rods are flush with the ends facing the adjustment groove.
[0010] In a preferred embodiment of the present invention, the adjustment structure further includes a shift rod and a rotating rod. The shift rod is fixedly connected to the ends of symmetrical connecting rods, and the rotating rod is rotatably connected to the outer wall of the frame, with the rotating rod located above the adjustment groove.
[0011] In a preferred embodiment of this utility model, the moving rod is rectangular, and a semi-circular plate is fixedly connected to the middle section of the side wall of the moving rod. The rotating rod is threaded and can pass through the semi-circular plate on the wall of the moving rod and be threadedly connected to the semi-circular plate.
[0012] In a preferred embodiment of the present invention, the wall of the frame is further provided with a buffer structure, which includes a swing groove, a rotating shaft, a buffer plate and a base plate. The swing groove is opened through the side wall of the frame, the rotating shaft is symmetrically rotatably connected in the swing groove, the buffer plate is fixedly connected between the symmetrical rotating shafts, and the base plate is fixedly connected to the side wall of the frame between the symmetrical transmission shafts.
[0013] In a preferred embodiment of this utility model, the swing groove is located below the adjustment groove, and symmetrical circular grooves adapted to the rotation of the rotating shaft are provided in the swing groove. The symmetrical rotating shaft is rotatably connected in the symmetrical circular grooves in the swing groove.
[0014] In a preferred embodiment of the present invention, the buffer plate is rectangular, and the top of the buffer plate is evenly provided with a plurality of downward-facing concave arc-shaped grooves. The side wall of the buffer plate in the swing groove is arc-shaped, and a spring is installed at the bottom of the buffer plate. The bottom of the spring can contact the top of the base plate, and the top of the base plate is a slope that gradually decreases to one side.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] 1. By setting an adjustable structure, the screen plate can be moved horizontally, thus enabling not only corn to be screened, but also corn of various sizes to be screened. Therefore, this solution has the advantages of higher practicality and lower cost.
[0017] 2. By setting up a buffer structure, the cost of corn kernels can be reduced due to impact when the corn falls, as the buffer plate can return to its original position via a spring. Therefore, the buffer structure can reduce the probability of damage to corn kernels during movement.
[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0019] In the attached diagram:
[0020] Figure 1 This is a perspective view of the present utility model;
[0021] Figure 2 This is a side perspective view of the present invention;
[0022] Figure 3 This is a diagram showing the assembly of the sieve plate and frame of this utility model;
[0023] Figure 4 This is an exploded view of the sieve plate and frame of this utility model;
[0024] Figure 5 This is an exploded view of the buffer plate and frame of this utility model.
[0025] In the diagram: 20, frame; 21, motor; 22, drive shaft; 23, drive belt; 24, placement rod; 30, adjustment groove; 31, sieve plate; 32, connecting rod; 33, moving rod; 34, rotating rod; 40, swing groove; 41, rotating shaft; 42, buffer plate; 43, base plate. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a corn grading and sorting device includes: a frame 20, which is a tube with an L-shaped cross-section; a drive shaft 22 is symmetrically rotatably connected to the inner wall of the opening of the frame 20; the drive shaft 22 is cylindrical; drive belts 23 are symmetrically sleeved between the symmetrical drive shafts 22; placement rods 24 are fixedly connected between the symmetrical drive belts 23; and motors 21 are symmetrically fixedly connected to the outer wall of the frame 20. The symmetrical motors 21 can drive the symmetrical drive shafts 22 to rotate. The motors 21 are electrically connected to a corresponding power source. This is existing technology and will not be described in detail here.
[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the adjustment structure is set on the wall of the frame 20 for screening corn. The adjustment structure includes: adjustment groove 30, connecting rod 32 and screen plate 31. The adjustment groove 30 is opened through the side wall of the frame 20. The connecting rod 32 is slidably connected in the adjustment groove 30. The screen plate 31 is fixedly connected to the wall of the connecting rod 32. The screen plate 31 is located between symmetrical drive shafts 22.
[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the adjustment groove 30 can accommodate the thickness of the connecting rod 32 and the screen plate 31. The connecting rod 32 is a rectangular rod, and the screen plate 31 is a right-angled triangular plate. The connecting rod 32 is symmetrically arranged on the wall of the screen plate 31. The ends of the symmetrical connecting rods 32 facing the adjustment groove 30 are flush. The adjustment structure also includes a shift rod 33 and a rotating rod 34. The shift rod 33 is fixedly connected to the ends of the symmetrical connecting rods 32, and the rotating rod 34 is rotatably connected to the outer wall of the frame 20. The rotating rod 34 is located above the adjustment groove 30. The shift rod 33 is a rectangular rod, and the side wall of the shift rod 33 is flush with the wall. A semi-circular plate is fixedly connected in the middle section. The rotating rod 34 is threaded. The rotating rod 34 can pass through the semi-circular plate on the wall of the moving rod 33 and be threadedly connected to the semi-circular plate. The wall of the frame 20 is also provided with a buffer structure, which includes a swing groove 40, a rotating shaft 41, a buffer plate 42 and a bottom plate 43. The swing groove 40 is opened through the side wall of the frame 20. The rotating shaft 41 is symmetrically rotatably connected in the swing groove 40. The buffer plate 42 is fixedly connected between the symmetrical rotating shafts 41. The bottom plate 43 is fixedly connected to the side wall of the frame 20 between the symmetrical transmission shafts 22.
[0030] In practical use, the power to motor 21 is turned on. When the power to motor 21 is turned on, it drives the symmetrical transmission shaft 22 to roll synchronously forward. As the symmetrical transmission shaft 22 rolls, it drives the symmetrical transmission belt 23 and the placement rod 24 to move along the arc surface of the symmetrical transmission shaft 22. Then, the corn cobs to be screened are placed between the adjacent placement rods 24 at the rear. As the corn cobs are moved by the placement rods 24, and as the bottom of the corn cobs gradually passes over the inclined surface of the screen plate 31, when the wall of the screen plate 31 and the corn cobs are misaligned, the corn cobs will fall downward from between the adjacent placement rods 24 and then roll into the corresponding groove on the top of the buffer plate 42. Then, the buffer plate 42 is pressed downward with the rotating shaft 41 as the pivot. When the center rotates and is tilted, the spring at the bottom of the buffer plate 42 will be compressed. As the corn rolls from the top of the buffer plate 42, the spring will push the buffer plate 42 back to a horizontal state. When it is necessary to adjust the size of the corn to be screened, the rotating rod 34 is rotated. The rotating rod 34 can drive the semi-circular plate on the wall of the moving rod 33 to move along the wall of the rotating rod 34 through the thread on its wall as it rotates along the side wall of the frame 20. As the semi-circular plate moves, it can drive the moving rod 33 to move synchronously. When the moving rod 33 moves, it will drive the symmetrical connecting rod 32 and the screen plate 31 to move synchronously between the symmetrical transmission shaft 22, so that the screen plate 31 moves. The distance between its inclined surface and the side wall of the frame 20 represents the size of the corn that can be classified.
[0031] In summary, by setting an adjustment structure, the screen plate 31 can be adjusted to move horizontally, thus enabling not only corn to be screened, but also corn of various sizes to be screened. Therefore, this solution has the advantages of higher practicality and lower cost.
[0032] like Figure 4 and Figure 5 As shown, the swing groove 40 is located below the adjustment groove 30. The swing groove 40 has symmetrical circular grooves adapted to the rotation of the rotating shaft 41. The symmetrical rotating shaft 41 is rotatably connected to the symmetrical circular grooves in the swing groove 40. The buffer plate 42 is a rectangular plate. The top of the buffer plate 42 has multiple downward-facing concave arc-shaped grooves. The side wall of the buffer plate 42 in the swing groove 40 is an arc-shaped surface. A spring is installed at the bottom of the buffer plate 42. The bottom of the spring can contact the top of the base plate 43. The top of the base plate 43 is a slope that gradually decreases to one side.
[0033] In actual use, when the corn cob falls downward between the adjacent placement rods 24, it will fall into the corresponding groove on the top of the buffer plate 42 and roll. Then the buffer plate 42 is pressed downward and rotated around the pivot 41 to tilt. At this time, the spring at the bottom of the buffer plate 42 will be compressed. As the corn rolls from the top of the buffer plate 42, the spring will push the buffer plate 42 back to a horizontal state.
[0034] In summary, by setting up a buffer structure, the buffer plate 42, which can be spring-loaded back, can reduce the damage to corn kernels caused by impact when the corn falls, thus reducing the increased cost. Therefore, the buffer structure can reduce the probability of damage when the corn is moving.
[0035] Working principle: When the power of motor 21 is turned on, it drives the symmetrical transmission shaft 22 to roll forward synchronously. As the symmetrical transmission shaft 22 rolls, it drives the symmetrical transmission belt 23 and the placement rod 24 to move on the arc surface of the symmetrical transmission shaft 22. Then, the corn cobs to be screened are placed between the adjacent placement rods 24 at the rear. As the corn cobs are moved by the placement rods 24, and as the bottom of the corn cobs gradually passes the inclined surface of the screen plate 31, when the wall of the screen plate 31 and the corn cobs are misaligned, the corn cobs will fall downward from between the adjacent placement rods 24 and then fall into the corresponding groove on the top of the buffer plate 42 and roll. Then, the buffer plate 42 is pressed downward and rotated around the pivot 41 to an inclined state. At this time, the spring at the bottom of the buffer plate 42 will be compressed. After the corn rolls from the top of the buffer plate 42, the spring will push the buffer plate 42 back to a horizontal state.
[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A corn grade classification screening device, characterized by, The utility model provides a corn screening device, which comprises a rack (20), a transmission shaft (22) is symmetrically connected to the inner side wall of the opening of the rack (20), the transmission shaft (22) is in the shape of a cylinder, a transmission belt (23) is symmetrically sleeved between the transmission shafts (22), a placing rod (24) is fixedly connected between the transmission belts (23), the placing rod (24) is in the shape of a cylinder, motors (21) are symmetrically fixedly connected to the outer side wall of the rack (20), and the symmetric motors (21) can drive the symmetric transmission shafts (22) to rotate. An adjusting structure is arranged on the wall of the rack (20) and is used for screening corn, the adjusting structure comprises an adjusting groove (30), a connecting rod (32) and a sieve plate (31), the adjusting groove (30) is arranged on the side wall of the rack (20), the connecting rod (32) is slidably connected in the adjusting groove (30), and the sieve plate (31) is fixedly connected to the wall of the connecting rod (32) and is located between the symmetric transmission shafts (22). The adjusting groove (30) can adapt to the thickness of the connecting rod (32) and the sieve plate (31), the connecting rod (32) is in the shape of a rectangle, the sieve plate (31) is in the shape of a right-angled triangle, the connecting rods (32) are symmetrically arranged on the wall of the sieve plate (31), and the ends of the symmetric connecting rods (32) are flush in the direction towards the adjusting groove (30).
2. A corn grading and sorting apparatus according to claim 1, wherein, The adjusting structure further comprises a moving rod (33) and a rotating rod (34), the moving rod (33) is fixedly connected to the ends of the symmetric connecting rods (32), the rotating rod (34) is rotatably connected to the outer side wall of the rack (20), and the rotating rod (34) is located above the adjusting groove (30).
3. A corn grading and sorting apparatus as defined in claim 1, wherein, The moving rod (33) is in the shape of a rectangle, a semicircular plate is fixedly connected to the middle of the side wall of the moving rod (33), the rotating rod (34) is in the shape of a threaded rod, and the rotating rod (34) can pass through the semicircular plate of the wall of the moving rod (33) and is threadedly connected with the semicircular plate.
4. A corn grading and sorting apparatus as defined in claim 3, wherein, The wall of the rack (20) is further provided with a buffer structure, the buffer structure comprises a swing groove (40), a rotating shaft (41), a buffer plate (42) and a bottom plate (43), the swing groove (40) is arranged on the side wall of the rack (20), the rotating shaft (41) is symmetrically rotatably connected in the swing groove (40), the buffer plate (42) is fixedly connected between the symmetric rotating shafts (41), and the bottom plate (43) is fixedly connected to the side wall of the rack (20) between the symmetric transmission shafts (22).
5. The corn grading and sorting apparatus of claim 1, wherein, The swing groove (40) is located below the adjusting groove (30), and the swing groove (40) is symmetrically provided with circular grooves that are adapted to the rotation of the rotating shafts (41) and are arranged in the swing groove (40), and the symmetric rotating shafts (41) are rotatably connected in the symmetric circular grooves arranged in the swing groove (40).
6. A corn grading and sorting apparatus as defined in claim 5, wherein, The buffer plate (42) is in the shape of a rectangle, a plurality of downwardly recessed arc-shaped grooves are uniformly arranged on the top of the buffer plate (42), the side wall of the buffer plate (42) in the swing groove (40) is in the shape of an arc, a spring is arranged on the bottom of the buffer plate (42), the bottom of the spring can be in contact with the top of the bottom plate (43), and the top of the bottom plate (43) is in the shape of an inclined surface that gradually decreases towards one side.
7. A corn grading and sorting apparatus as defined in claim 5, wherein,