Automatic grading device for potato blocks

Abstract

The automatic grading device comprises a supporting frame, a feeding hopper is arranged at the upper end of the supporting frame, a roller conveyor is arranged at the position, below the feeding hopper, of the supporting frame, a discharging port is formed in one side of the feeding hopper, and a belt conveyor is outwards arranged below the discharging port; a supporting table is arranged below the free end of the belt conveyor, the upper end of the supporting table is rotationally connected with a horizontal rotary table driven by a driving motor to rotate, a plurality of connecting grooves distributed circumferentially are formed in the upper end of the horizontal rotary table, and the sides, away from the center of the horizontal rotary table, of the upper ends of the connecting grooves are rotationally connected with sorting grooves with the upper ends open. A weighing sensor is arranged at the bottom of the sorting groove, a bearing plate is arranged at the position, corresponding to the upper end of the weighing sensor, of the bottom of the sorting groove, and an electromagnet used for driving the sorting groove to rotate is arranged on one side in the connecting groove. The potatoes are graded in a one-by-one rapid weighing mode, the grading accuracy can be further improved, and market requirements are better met.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to an automatic potato tuber grading device. Background Art

[0002] As an important crop widely grown around the world, potatoes play an important role in many fields such as food processing and sales. Traditional potato grading mainly relies on manual operation, which classifies potatoes according to characteristics such as size and shape through visual observation and manual screening. However, this method is not only inefficient and difficult to meet the needs of large-scale production, but also the accuracy of grading is affected by human factors, resulting in inaccurate grading results. For example, there may be differences in judgment standards between different operators, and problems such as fatigue after long hours of work will affect the final grading quality.

[0003] In order to solve these problems, many automatic potato grading devices have appeared on the market in recent years. These devices mainly use photoelectric sensors, image recognition technology and other means to detect the size and shape of potatoes, and automatically grade potatoes according to preset standards. Although these technologies have improved the grading efficiency and accuracy to a certain extent, most of them can only grade potatoes according to their external dimensions (i.e., size), but cannot accurately classify them according to their actual weight. This means that for potatoes with irregular shapes (such as long strips), even if they weigh less, they may be mistakenly classified into higher grades due to their longer size, thereby affecting the market value and consumer satisfaction of the final product. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic potato tuber grading device, which can grade potatoes by quickly weighing them one by one, thereby further improving the accuracy of grading, better adapting to market demand, and enhancing product competitiveness.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic potato tuber grading device, comprising a support frame, a feed hopper with upper and lower ends opened is arranged at the upper end of the support frame, a roller conveyor is arranged below the feed hopper along the length direction of the support frame, a gap is left between every two rollers on the roller conveyor, a first driving motor for driving the roller conveyor to move is installed on the support frame, the feed hopper is provided with a discharge port on one side of one end of the roller conveyor, a belt conveyor is arranged outwardly along the length direction of the roller conveyor below the discharge port, the belt conveyor is provided with outwardly expanded ribs on both sides of its conveyor belt facing upward and outward, and the two outwardly expanded ribs form a V shape;

[0006] A support platform is arranged below the free end of the belt conveyor, the upper end of the support platform is rotatably connected to a horizontal turntable, a second driving motor for driving the horizontal turntable to rotate is installed in the support platform, a plurality of connecting grooves which are circumferentially distributed and open at the upper end are arranged at the upper end of the horizontal turntable, a side of the upper end of each connecting groove away from the center of the horizontal turntable is rotatably connected to a sorting groove with an open upper end, a weighing sensor is arranged at the bottom of each sorting groove, and a load-bearing plate is arranged at the upper end of the corresponding weighing sensor at the bottom of each sorting groove An electromagnet is arranged on the side away from the rotation of each connecting groove, a sliding shaft perpendicular to the corresponding electromagnet is arranged in each connecting groove along its length direction, an iron slider is slidably connected in each connecting groove, each iron slider is provided with a sliding hole slidably connected to the corresponding sliding shaft, a return spring with a sleeve corresponding to the sliding shaft is arranged between each iron slider and the corresponding electromagnet, a connecting rod is rotatably connected to the upper end of each iron slider and the bottom of the corresponding sorting slot away from the rotation point, and a plurality of storage troughs distributed in a circle are arranged on the outer periphery of the support platform.

[0007] By adopting the above technical solution, when grading potatoes, potatoes are added to the feed hopper, the roller conveyor is started, and the potatoes at the bottom are driven to move toward the belt conveyor. In the process, the smaller potatoes are discharged through the gaps between the rollers for preliminary grading, and the larger potatoes are discharged from the discharge channel along with the roller conveyor and fall onto the belt conveyor. The potatoes are distributed side by side one by one on the fast-moving belt conveyor, and then fall from the free end of the belt conveyor into the sorting trough. Driven by the second drive motor, the horizontal turntable The sorting trough is driven to rotate rapidly and continuously. After the potatoes fall into the sorting trough, the weight of the potatoes is quickly weighed by the weighing sensor at the bottom, and the potatoes are automatically graded by weight. When it rotates to the storage trough at the corresponding grade position, the electromagnet is energized to attract the iron slider to slide and compress the reset spring, so that the iron slider slides and drives the connecting rod to rotate. The rotation of the connecting rod can push the sorting trough to rotate forward, and the potatoes in the sorting trough are poured into the corresponding storage trough. Then the electromagnet is powered off, and the sorting trough is reset under the action of the reset spring to complete one layer of grading.

[0008] The present invention is further configured as follows: the discharge port is provided with a discharge channel outwardly cooperating with the belt conveyor.

[0009] The present invention is further configured as follows: the support frame is provided with an inclined discharge channel downwardly in a direction away from the belt conveyor and below the stick conveyor.

[0010] The present invention is further configured as follows: a rotating support sleeve rotatably connected to the support platform is downwardly arranged at the lower end of the horizontal turntable, an internal gear ring is arranged on the inner wall of the rotating support sleeve, and a power output shaft of the second driving motor is connected to a driving gear meshing with the internal gear ring.

[0011] The present invention is further configured as follows: a support ring is provided at the lower end of the rotating support sleeve, a support groove is downwardly opened at the upper end of the support platform and matches the support ring, and a plurality of support rollers distributed in a circle and in contact with the lower end of the support ring are rotatably connected in the support groove.

[0012] The present invention is further configured as follows: a rotation hole is penetrated through the middle of the horizontal turntable, an electric shaft passing through the rotation hole is upwardly arranged at the upper end of the support platform, an electric slip ring electrically connected to the electric shaft is installed at the upper end of the horizontal turntable, a cable is connected between each connecting groove and the electric slip ring, and each weighing sensor and each electromagnet are electrically connected to the electric slip ring through a corresponding cable.

[0013] The present invention is further configured as follows: both the front and rear ends of each sorting slot are arc-shaped.

[0014] In summary, the present invention has the following beneficial effects:

[0015] First, the present invention adopts a weighing classification method instead of the traditional size classification. After the potatoes fall into the sorting tank, they can be quickly weighed and then poured into the corresponding storage tank according to weight. Compared with the classification by size, the weight of the potatoes sorted out is equal, and the classification will not be inaccurate due to the irregular shape of potatoes, which can better meet market demand and improve product competitiveness.

[0016] Secondly, before weight grading, the present invention first uses the gap of the roller conveyor to screen out the smaller potatoes for primary screening to prevent multiple smaller potatoes from stacking together and falling into the sorting trough to affect grading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a partial cross-sectional view used to show the roller conveyor;

[0019] Figure 3 It is a partial cross-sectional view used to show the connection between the horizontal turntable and the support platform;

[0020] Figure 4 Used to show the internal gear ring inside the rotating support sleeve;

[0021] Figure 5 Used to show the connection between the connecting tank and the sorting tank;

[0022] Figure 6 Used to demonstrate the load cell in the sorting trough.

[0023] In the figure: 1. support frame; 11. feed hopper; 12. inclined discharge channel; 13. discharge channel; 2. roller conveyor; 21. first drive motor; 3. belt conveyor; 31. outward-expanding rib; 4. support platform; 41. second drive motor; 42. drive gear; 43. support slot; 44. support roller; 45. power shaft; 5. horizontal turntable; 51. rotating support sleeve; 52. inner gear ring; 53. support ring; 54. rotating hole; 6. connecting slot; 61. electromagnet; 62. sliding shaft; 63. iron slider; 64. reset spring; 65. connecting rod; 7. sorting slot; 71. weighing sensor; 72. load-bearing plate; 8. storage tank; 9. electric slip ring; 91. cable. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example, see Figure 1-6, An automatic potato grading device, including a support frame 1. At the upper end of the support frame 1, there is a feeding hopper 11 with openings at both the upper and lower ends. Along the length direction of the support frame 1 below the feeding hopper 11, there is a roller conveyor 2. There is a gap between every two rollers on the roller conveyor 2. Below the roller conveyor in the downward direction away from the belt conveyor 3, the support frame 1 is provided with an inclined discharge channel 12, so that smaller potatoes can fall onto the inclined discharge channel 12 through the gaps between the rollers. The support frame 1 is equipped with a first driving motor 21 for driving the roller conveyor 2 to move. At one side of one end of the roller conveyor 2 of the feeding hopper 11, there is a discharge port (not shown in the figure). An outwardly arranged discharge channel 13 that cooperates with the belt conveyor 3 is provided at the discharge port. Along the length direction of the roller conveyor 2 below the discharge port, there is a belt conveyor 3 arranged outward. On both sides of the conveyor belt of the belt conveyor 3, there is an outwardly and upwardly arranged outward expanding edge 31. The two outward expanding edges 31 form a V shape. After the potatoes fall onto the belt conveyor 3, under the action of the outward expanding edges 31, the potatoes are arranged side by side one by one on the belt conveyor 3.

[0029] Below the free end of the belt conveyor 3, there is a support platform 4. At the upper end of the support platform 4, there is a horizontally rotating platform 5 rotatably connected. Inside the support platform 4, there is a second driving motor 41 for driving the horizontally rotating platform 5 to rotate. At the lower end of the horizontally rotating platform 5, there is a rotating support sleeve 51 rotatably connected to the support platform 4. The inner wall of the rotating support sleeve 51 is provided with an inner gear ring 52. The power output shaft of the second driving motor 41 is connected with a driving gear 42 meshing with the inner gear ring 52. At the lower end of the rotating support sleeve 51, there is a support ring 53. At the upper end of the support platform 4, there is a support groove 43 that cooperates with the support ring 53. Inside the support groove 43, there are multiple support rollers 44 distributed in a circular pattern and in contact with the lower end of the support ring 53, making the resistance of the horizontally rotating platform 5 to rotate smaller.

[0030] At the upper end of the horizontally rotating platform 5, there are multiple connection grooves 6 distributed in a circular pattern and with openings at the upper ends. At one side of each connection groove 6 away from the center of the horizontally rotating platform 5 at the upper end, there is a sorting groove 7 with an opening at the upper end. The front and rear ends of each sorting groove 7 are arc-shaped, facilitating the forward pouring of potatoes. At the bottom of each sorting groove 7, there is a weighing sensor 71. At the upper end corresponding to the weighing sensor 71 at the bottom of each sorting groove 7, there is a load-bearing plate 72. When the potatoes fall into the sorting groove 7, the weighing sensor 71 can quickly weigh the potatoes.

[0031] An electromagnet 61 is provided on the side away from the rotation of each connecting groove 6, and three sliding shafts 62 are provided in each connecting groove 6 along its length direction, which are perpendicular to the corresponding electromagnet 61. An iron slider 63 is slidably connected in each connecting groove 6, and each iron slider 63 is provided with three sliding holes (not shown) slidably connected to the corresponding sliding shaft 62. Three reset springs 64, which are respectively coated with the corresponding sliding shaft 62, are provided between each iron slider 63 and the corresponding electromagnet 61. A connecting rod 65 is rotatably connected to the upper end of each iron slider 63 and the bottom of the corresponding sorting slot 7 away from the rotation position. When the electromagnet 61 is energized to attract the iron slider 63 to slide and compress the reset spring 64, the iron slider 63 slides and drives the connecting rod 65 to rotate. The rotation of the connecting rod 65 can push the sorting slot 7 to rotate forward. After the electromagnet 61 is powered off, under the action of the reset spring 64, the iron slider 63 is pushed to reset, and the sorting slot 7 is pulled to reset through the connecting rod 65. Seven material storage troughs 8 distributed in a circle are arranged on the outer periphery of the support platform 4 .

[0032] A rotation hole 54 is formed through the middle of the horizontal turntable 5, and an electric shaft 45 passing through the rotation hole 54 is upwardly provided at the upper end of the support platform 4. An electric slip ring 9 electrically connected to the electric shaft 45 is installed at the upper end of the horizontal turntable 5. A cable 91 is connected between each connecting groove 6 and the electric slip ring 9. Each weighing sensor 71 and each electromagnet 61 are electrically connected to the electric slip ring 9 through the corresponding cable 91, ensuring that power is supplied during the continuous rotation of the horizontal turntable 5.

[0033] Working principle: When grading potatoes, add potatoes to the feed hopper 11, start the roller conveyor 2, and drive the potatoes at the bottom to move toward the belt conveyor 3. During the process, the smaller potatoes fall through the gaps between the rollers to the inclined discharge channel 12 and are discharged from the bottom for preliminary grading. The larger potatoes are discharged from the discharge channel 13 along with the roller conveyor 2 and fall onto the belt conveyor 3. The potatoes are distributed side by side on the fast-moving belt conveyor 3, and then fall from the free end of the belt conveyor 3 into the sorting trough 7. Driven by the second drive motor 41, the horizontal turntable 5 The sorting trough 7 is driven to rotate rapidly and continuously. After the potatoes fall into the sorting trough 7, the weight of the potatoes is quickly weighed through the weighing sensor 71 at the bottom thereof, and the potatoes are automatically graded by weight. When it rotates to the storage trough 8 at the corresponding grade position, the electromagnet 61 is energized to attract the iron slider 63 to slide and compress the reset spring 64, so that the iron slider 63 slides and drives the connecting rod 65 to rotate. The rotation of the connecting rod 65 can push the sorting trough 7 to rotate forward, and the potatoes in the sorting trough 7 are poured into the corresponding storage trough 8. Then the electromagnet 61 is powered off, and the sorting trough 7 is reset under the action of the reset spring 64 to complete one layer of grading.

[0034] This specific embodiment is only an interpretation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. An automatic potato tuber grading device, comprising a support frame (1), characterized in that: The upper end of the support frame (1) is provided with a feed hopper (11) with openings at both ends, and the support frame (1) is provided with a roller conveyor (2) below the feed hopper (11) along its length direction, and a gap is left between each two rollers on the roller conveyor (2). The support frame (1) is equipped with a first drive motor (21) for driving the roller conveyor (2) to move, and the feed hopper (11) is provided with a discharge port on one side of one end of the roller conveyor (2), and a belt conveyor (3) is provided outwardly below the discharge port along the length direction of the roller conveyor (2), and the belt conveyor (3) is provided with outwardly expanding ribs (31) on both sides of its conveyor belt, and the two outwardly expanding ribs (31) form a V shape; A support platform (4) is arranged below the free end of the belt conveyor (3), the upper end of the support platform (4) is rotatably connected to a horizontal turntable (5), a second drive motor (41) for driving the horizontal turntable (5) to rotate is installed in the support platform (4), a plurality of connecting grooves (6) distributed in a circumference and open at the upper end are arranged at the upper end of the horizontal turntable (5), a side of the upper end of each connecting groove (6) away from the center of the horizontal turntable (5) is rotatably connected to a sorting groove (7) with an open upper end, a weighing sensor (71) is arranged at the bottom of each sorting groove (7), a bearing plate (72) is arranged at the upper end of the corresponding weighing sensor (71), and each connecting groove (6) is provided with an electromagnet (61) on the side away from its rotation, each connecting groove (6) is provided with a sliding shaft (62) perpendicular to the corresponding electromagnet (61) along its length direction, each connecting groove (6) is slidably connected with an iron slider (63), each iron slider (63) is provided with a sliding hole slidably connected with the corresponding sliding shaft (62), a return spring (64) with a sleeve corresponding to the sliding shaft (62) is provided between each iron slider (63) and the corresponding electromagnet (61), the upper end of each iron slider (63) is rotatably connected to the bottom of the corresponding sorting groove (7) away from its rotation point, and a connecting rod (65) is rotatably connected, and a plurality of storage troughs (8) distributed in a circle are provided on the outer periphery of the support platform (4).

2. The automatic potato tuber grading device according to claim 1, characterized in that: The discharge port is provided with a discharge channel (13) outwardly cooperating with the belt conveyor (3).

3. The automatic potato tuber grading device according to claim 1, characterized in that: The support frame (1) is provided with an inclined discharge channel (12) in a downward direction away from the belt conveyor (3) below the stick conveyor.

4. The automatic potato tuber grading device according to claim 1, characterized in that: A rotating support sleeve (51) is arranged downwardly at the lower end of the horizontal turntable (5) and is rotatably connected to the support platform (4); an inner gear ring (52) is arranged on the inner wall of the rotating support sleeve (51); and a driving gear (42) meshing with the inner gear ring (52) is connected to the power output shaft of the second driving motor (41).

5. The automatic potato tuber grading device according to claim 4, characterized in that: A support ring (53) is provided at the lower end of the rotating support sleeve (51), and a support groove (43) matching with the support ring (53) is opened downward at the upper end of the support platform (4), and a plurality of support rollers (44) distributed in a circumference and in contact with the lower end of the support ring (53) are rotatably connected in the support groove (43).

6. The automatic potato tuber grading device according to claim 1, characterized in that: A rotation hole (54) is provided through the middle of the horizontal turntable (5); an electric connection shaft (45) passing through the rotation hole (54) is provided upwardly at the upper end of the support platform (4); an electric slip ring (9) electrically connected to the electric connection shaft (45) is installed at the upper end of the horizontal turntable (5); a cable (91) is connected between each connection groove (6) and the electric slip ring (9); and each weighing sensor (71) and each electromagnet (61) are electrically connected to the electric slip ring (9) via a corresponding cable (91).

7. The automatic potato tuber grading device according to claim 1, characterized in that: The front and rear ends of each sorting slot (7) are both arc-shaped.

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