Seed sorting device

Abstract

The present invention relates to the field of agriculture and discloses a seed sorting device, comprising a box body; a feeding mechanism, which is arranged on one side of the interior of the box body and is used for seed loading; a transmission mechanism, which is arranged on one side of the feeding mechanism, and a first end of the transmission mechanism is connected to the feeding mechanism, and is used for seed transmission; a sorting mechanism, which is arranged on a side of the interior of the box body away from the feeding mechanism, and the sorting mechanism comprises an air transmission part, a suction nozzle part and an actuating part, the suction nozzle part is arranged above the second end of the transmission mechanism, and a seed suction port is formed thereon; the air transmission part is arranged above the suction nozzle part and is connected to the suction nozzle part, and is used for inputting compressed air flow to provide air suction force for seed sorting; the actuating part is telescopically arranged on one side of the suction nozzle part, when the actuating part is extended, the suction nozzle part is squeezed so that the cross-sectional area of ​​the seed suction port is reduced, and the seeds are sucked into the seed suction port to complete the sorting; when the actuating part contracts, the compressed air flow in the air transmission part continues to be input for a preset time length, so as to prevent the seeds from falling back, thereby improving the seed sorting efficiency.

Description

Technical Field

[0001] The invention relates to the field of agriculture, and in particular to a seed sorting device with a compressible elastic suction nozzle. Background Art

[0002] my country is a major crop producer and consumer, and crops play a vital role in the national food consumption structure. With the continuous improvement of living standards, people's demand for crop quality and safety requirements are increasing. The quality of crop seeds is of great significance to the cultivation and production of crops. Therefore, rapid detection and sorting of crop seeds are of great practical significance. One of the main methods for sorting crop seeds is to use a pneumatic conveyor to suck the seeds. However, when existing pneumatic conveyors are performing continuous sorting, if the cross-sectional area of ​​the suction nozzle and the distance between the nozzle end face and the seeds remain unchanged, there is a risk that the seeds will fall back after the air is stopped, resulting in a low seed sorting rate. Summary of the Invention

[0003] The purpose of the present invention is to overcome the problem in the prior art that seeds are prone to falling back during sorting, and to provide a seed sorting device, which has the advantage that seeds are not prone to falling back during sorting, thereby improving sorting efficiency.

[0004] In order to achieve the above object, the present invention provides a seed sorting device, comprising:

[0005] Box;

[0006] The feeding mechanism is arranged on one side of the interior of the box;

[0007] A transmission mechanism is provided on one side of the feeding mechanism, wherein a first end of the transmission mechanism is connected to the feeding mechanism; and

[0008] The sorting mechanism is arranged on a side of the transmission mechanism away from the feeding mechanism, and includes an air delivery portion, a suction nozzle portion, and an actuating portion. The suction nozzle portion is arranged above the second end of the transmission mechanism, and is formed with a seed suction port. The air delivery portion is arranged above the suction nozzle portion and is connected to the suction nozzle portion to input compressed air flow to provide air suction force for seed sorting. The actuating portion is retractably arranged on one side of the suction nozzle portion.

[0009] When the actuator is extended, the nozzle is squeezed and the seeds are sucked into the seed inlet by negative pressure to achieve sorting. Preferably, the actuator is configured so that when the compressed airflow remains constant, the extended length of the actuator and the cross-sectional area of ​​the seed inlet are in a preset proportional relationship.

[0010] Preferably, the suction nozzle is an elastic element with a hollow structure.

[0011] Preferably, the elastic element is cylindrical.

[0012] Preferably, the vertical distance between the seed suction port and the transmission mechanism ranges from 2 mm to 6 mm.

[0013] Preferably, the gas delivery portion includes a pneumatic conveyor, an annular high-pressure chamber is formed in the pneumatic conveyor, the annular high-pressure chamber is communicated with the suction nozzle, and an air flow inlet connected to the air source is formed on the annular high-pressure chamber.

[0014] Preferably, the sorting mechanism further comprises a supporting portion, which comprises a bracket assembly and a fixed base plate. One end of the bracket assembly is arranged on the bottom surface of the box body, and the other end is movably or detachably connected to the fixed base plate.

[0015] Preferably, a groove with a bottom passing through is formed on the fixed base plate, the pneumatic conveyor is arranged above the groove, and the suction nozzle is arranged below the groove and communicated with the pneumatic conveyor.

[0016] Preferably, the actuating portion includes a fixing member and a pushing member, the fixing member is provided below the fixed base plate, the pushing member is telescopically provided on the fixing member, and the extending direction of the pushing member is toward the suction nozzle portion.

[0017] Preferably, the sorting device further comprises a blocking portion provided below the fixed base plate, the blocking portion is arranged opposite to the actuating portion, and the blocking portion is at least partially in contact with the outer side surface of the suction nozzle portion.

[0018] Through the above technical solution, the air supply part provides air suction for seed sorting, and when the actuator part extends, it squeezes the suction nozzle to reduce the cross-sectional area of ​​the seed suction port on the suction nozzle. At this time, the seeds can be sucked in from the seed suction port to complete the sorting; when the actuator part contracts, the compressed air flow in the air supply part continues to be input for a preset time to prevent the seeds from falling back, thereby solving the problem of seeds easily falling back when using pneumatic seed sorting in the prior art. The structure is simple and easy to implement, thereby improving the seed sorting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a seed sorting device;

[0020] Figure 2 It is a schematic diagram of irradiation and shooting;

[0021] Figure 3 It is a schematic diagram of the structure of the sorting mechanism;

[0022] Figure 4 It is a partial cross-sectional schematic diagram of the sorting mechanism;

[0023] Figure 5 Schematic diagram of the function of the actuator and the nozzle;

[0024] Figure 6 It is a schematic diagram of seed inhalation;

[0025] Figure 7It is a schematic diagram of the relationship between the cross-sectional area of ​​the seed suction port and the elastic deformation of the suction nozzle.

[0026] Description of Reference Numerals

[0027] 1 Box 2 Loading mechanism

[0028] 3 Transmission mechanism 31 chute plate

[0029] 311 light hole 312 arc groove

[0030] 4 Light source mechanism 5 Shooting mechanism

[0031] 6 Sorting mechanism 61 nozzle part

[0032] 62 Air Delivery Unit 621 Pneumatic Conveyor

[0033] 63 Actuating portion 631 Fixing member

[0034] 632 Pushing member 64 Supporting portion

[0035] 641 Bracket assembly 642 Fixed base plate

[0036] 65 Blocking part DETAILED DESCRIPTION

[0037] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0038] In the present invention, unless otherwise indicated, directional terms such as "up," "down," "left," and "right" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational directions, describing the relative positions of components. The terms "inside" and "outside" refer to the user's viewing angle, with the side exposed to the user's view being "outside" and the side hidden from the user being "inside."

[0039] The present invention provides a seed sorting device, which extends the actuator 63 to act on the suction nozzle 61 to reduce the cross-sectional area of ​​the seed suction port, so that the seeds can be sucked in to achieve the sorting process, and after the actuator 63 contracts, the air supply part 62 continues to supply air to prevent the seeds from falling back. Specifically, Figure 1As shown, the seed sorting device in this embodiment includes a box body 1, a feeding mechanism 2, a transmission mechanism 3 and a sorting mechanism 6, wherein the feeding mechanism 2 is arranged on one side of the inside of the box body 1 for realizing seed feeding; the transmission mechanism 3 is arranged on one side of the feeding mechanism 2, and the first end of the transmission mechanism 3 is connected to the feeding mechanism 2 for realizing seed transmission; the sorting mechanism 6 is arranged on the side of the inside of the box body 1 away from the feeding mechanism 2, and the sorting mechanism 6 includes an air transmission part 62, a suction nozzle part 61 and an actuating part 63, the suction nozzle part 61 is arranged above the second end of the transmission mechanism 3, and a seed suction port is formed on the suction nozzle part 61; as shown Figure 6 As shown, the air supply part 62 is arranged above the suction nozzle part 61 and is connected to the suction nozzle part 61, and is used to input compressed air flow to provide air suction force for seed sorting; the actuator part 63 is telescopically arranged on one side of the suction nozzle part 61. When the actuator part 63 is extended, the suction nozzle part 61 is squeezed so that the cross-sectional area of ​​the seed suction port is reduced, and the seeds are sucked into the seed suction port to achieve sorting; when the actuator part 63 contracts, the compressed air flow in the air supply part 62 continues to be input for a preset time length to avoid seeds falling back, which can solve the problem of seed falling back that is prone to occur when pneumatic seed sorting is used in the prior art.

[0040] In one embodiment of the present invention, the seed sorting device further includes a light source mechanism 4, a shooting mechanism 5 and a control mechanism. Figure 2 As shown, the light source mechanism 4 is arranged below the transmission mechanism 3 and on the side close to the sorting mechanism 6; the shooting mechanism 5 is arranged above the transmission mechanism 3, and a light hole 311 is formed on the transmission mechanism 3. When the seeds on the transmission mechanism 3 pass through the light hole 311, they are illuminated by the light source mechanism 4 below. The shooting mechanism 5 then takes an image of the seeds at this time. The shooting mechanism 5 is provided with an image processing element to process the seed image to determine whether the preset activity condition is met. If so, a signal indicating that the seed meets the preset activity condition is sent to the control mechanism, and the control mechanism then controls the sorting mechanism 6 to perform a sorting operation on the seeds. Furthermore, the box body 1 includes a box bottom plate and a box shell. The box bottom plate and the box shell form a closed space, which can effectively isolate the interference of external light and improve the sorting efficiency.

[0041] In one embodiment of the present invention, the transmission mechanism 3 includes a linear vibrator, a vibrating base plate, and a chute plate 31. The vibrating base plate is mounted on the bottom plate of the box, the linear vibrator is mounted above the vibrating base plate, and the chute plate 31 is mounted above the linear vibrator. The chute plate 31 is formed with an arcuate groove 312, and a light hole 311 is formed in the arcuate groove 312 at one end near the sorting mechanism 6. Before the seed sorting device is activated, the user first pours seeds into the feeding mechanism 2. After the seed sorting device is activated, the seeds flow out of the outlet of the feeding mechanism 2 and fall onto the chute plate 31. Under the vibration of the linear vibrator, the seeds move forward in an orderly manner along the grooves in the chute plate 31.

[0042] In one embodiment of the present invention, the air delivery unit 62 includes a pneumatic conveyor 621. The pneumatic conveyor 621 includes an annular high-pressure chamber, which is connected to the suction nozzle and has an air delivery port connected to the air source. When compressed air enters the annular high-pressure chamber from the air delivery port, it creates a vacuum pressure at the seed inlet, allowing the seeds to be drawn out of the seed inlet. When the compressed air flow input by the pneumatic conveyor 621 remains constant, the negative pressure of the vacuum pressure is inversely proportional to the cross-sectional area of ​​the seed inlet. In other words, by controlling the pneumatic conveyor 621, seeds can be further sorted according to their quality. Specifically, when the air intake pressure remains constant, the larger the cross-sectional area of ​​the seed inlet, the smaller the negative pressure generated at the seed inlet, and the smaller the mass of seeds suitable for inhalation. Similarly, the smaller the cross-sectional area of ​​the seed inlet, the greater the negative pressure generated at the seed inlet, and the larger the mass of seeds suitable for inhalation.

[0043] In one embodiment of the present invention, the suction nozzle portion 61 includes a suction nozzle portion, which is an elastic element with a hollow structure, so that the suction nozzle portion can form a cavity structure connected to the air supply portion 62, and can produce elastic deformation under the pushing action of the actuator portion 63 when it is extended to reduce the cross-sectional area of ​​the seed suction port, so that the seeds can be sucked in; when the actuator portion 63 contracts, the suction nozzle portion returns to its original shape, and the cross-sectional area of ​​the seed suction port also returns to its original shape. At this time, the seeds cannot be sucked in for sorting. The elastic element in this embodiment is cylindrical, that is, the initial shape of the seed suction port is a circular cross-section. As the elastic deformation amount of the elastic suction nozzle portion changes, the cross-sectional area of ​​the circular cross-section changes accordingly, and the seeds suitable for sorting also change accordingly. Figure 7 As shown, when the cross-sectional area of ​​the seed suction port is greater than the first preset value A1, all seeds cannot be sucked in; when the cross-sectional area of ​​the seed suction port is greater than or equal to the second preset value A2 but less than the first preset value A1, it is suitable for sucking in seed shells; when the cross-sectional area of ​​the seed suction port is greater than or equal to the third preset value A3 but less than the second preset value A2, it is suitable for sucking in seed shells, and / or unfilled seeds, and / or shriveled seeds; when the cross-sectional area of ​​the seed suction port is less than the third preset value A3, seed shells, and / or unfilled seeds, and / or shriveled seeds, and / or full seeds can all be sucked in, wherein, Figure 7 The X-axis represents the elastic deformation of the suction nozzle, and the Y-axis represents the cross-sectional area of ​​the seed suction port.

[0044] In one embodiment of the present invention, the vertical distance between the seed suction port and the transmission mechanism 3 ranges from 2 mm to 6 mm. Furthermore, preferably, the vertical distance between the seed suction port and the transmission mechanism 3 ranges from 3 mm to 5 mm. This numerical range allows the seeds to be smoothly sucked in, preventing the inability to suck in some seeds with larger mass due to a large distance when the negative pressure is constant, and also preventing the inability to suck in all seeds of multiple types due to a small distance. The specific vertical distance between the seed suction port and the transmission mechanism 3 can also be adjusted according to the seed type and the actual value of the negative pressure.

[0045] In one embodiment of the present invention, Figure 3 As shown, the sorting mechanism 6 also includes a support portion 64, which includes a bracket assembly 641 and a fixed base plate 642. One end of the bracket assembly 641 is provided on the bottom surface of the box body 1, and the other end is movably or detachably connected to the fixed base plate 642. The suction nozzle portion 61 is provided below the fixed base plate 642. Specifically, the bracket assembly 641 includes a first bracket and a second bracket, and the first bracket and the second bracket are symmetrically provided on both sides of the second end of the transmission mechanism 3. The fixed base plate 642 is provided between the first bracket and the second bracket, and a pulley or a slider is provided on the fixed base plate 642, and the first bracket and the second bracket are correspondingly provided with a slide rail, so that a movable fit is formed between the fixed base plate 642 and the first bracket and the second bracket; or a convex structure is provided on the fixed base plate 642, and a buckle structure is provided on the first bracket and the second bracket, so that a detachable fit is formed between the fixed base plate 642 and the first bracket and the second bracket.

[0046] In one embodiment of the present invention, Figure 4 As shown, a groove with a bottom running through it is formed on the fixed base plate 642, the pneumatic conveyor 621 is arranged above the groove, and the suction nozzle is arranged below the groove and is connected to the pneumatic conveyor 621. Specifically, the lower end of the suction nozzle with a seed suction port faces the chute plate 31 of the transmission mechanism 3, and its upper end is connected to the lower end of the pneumatic conveyor 621, so that the airflow can form a negative pressure at the seed suction port; the seed sorting device in this embodiment also includes a seed collecting part, which is arranged above the pneumatic conveyor 621 and is connected to the upper end of the pneumatic conveyor 621. The seeds are sucked in at the seed suction port due to the negative pressure, and are transported to the seed collecting part through the suction nozzle and the pneumatic conveyor 621 in sequence to complete the sorting.

[0047] In one embodiment of the present invention, Figure 5As shown, the actuator 63 includes a fixing member 631 and a pushing member 632. The fixing member 631 is arranged below the fixed base plate 642, and the pushing member 632 is retractably arranged on the fixing member 631, and the extension direction of the pushing member 632 is toward the suction nozzle. A cavity structure is formed inside the fixing member 631, and a linear drive component, such as a cylinder, a gas rod, etc., is provided in the cavity structure. The pushing member 632 is a convex column structure, and the convex column structure is arranged at the drive output end of the linear drive component, so that the convex column structure can extend forward or retract under the driving action of the linear drive component. When the convex column structure extends forward, it can squeeze the suction nozzle to compress and deform it, thereby reducing the cross-sectional area of ​​the seed suction port; when the convex column structure retracts backward, the suction nozzle returns to its original shape, and the cross-sectional area of ​​the seed suction port also returns to its original shape. The extended length of the actuator 63 and the cross-sectional area of ​​the seed inlet are in a preset proportional relationship. This means that the user can adjust the extended length of the boss structure according to actual needs, and adjust it to a corresponding preset proportional relationship with the cross-sectional area of ​​the seed inlet. In this embodiment, when the extended length of the boss structure is a first preset length, the cross-sectional area of ​​the seed inlet is a first preset value A1; when the extended length of the boss structure is a second preset length, the cross-sectional area of ​​the seed inlet is a second preset value A2; and when the extended length of the boss structure is a third preset length, the cross-sectional area of ​​the seed inlet is a third preset value A3. Furthermore, this embodiment can also employ other methods to adjust the size of the seed inlet, such as providing a shielding portion below the seed inlet to shield the seed inlet.

[0048] In one embodiment of the present invention, the sorting device also includes a blocking portion 65 provided below the fixed base plate 642. The blocking portion 65 is arranged opposite to the actuating portion 63, and the blocking portion 65 is at least partially in contact with the outer side surface of the suction nozzle portion, and can block the suction nozzle portion on the side opposite to the actuating portion 63, thereby preventing the suction nozzle portion on the side opposite to the actuating portion 63 from tilting and deforming due to the pushing action of the actuating portion 63, resulting in an insignificant change in the cross-sectional area of ​​the seed suction port, which affects the sorting effect of the seed sorting device.

[0049] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

[0050] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0052] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A seed sorting device, characterized in that: include Box; A feeding mechanism is arranged on one side of the interior of the box; A transmission mechanism is provided on one side of the feeding mechanism, wherein a first end of the transmission mechanism is connected to the feeding mechanism; and The sorting mechanism is arranged on a side of the transmission mechanism away from the feeding mechanism, and includes an air delivery portion, a suction nozzle portion, and an actuating portion. The suction nozzle portion is arranged above the second end of the transmission mechanism and is formed with a seed suction port. The air delivery portion is arranged above the suction nozzle portion and is connected to the suction nozzle portion to input compressed air flow to provide air suction force for seed sorting. The actuating portion is retractably arranged on one side of the suction nozzle portion. When the actuating portion extends, the suction nozzle is squeezed, and the seeds are sucked into the seed suction port by negative pressure to achieve sorting. When the actuating portion contracts, the air supply portion is used to input a compressed air flow of a preset duration into the suction nozzle. The air delivery part includes a pneumatic conveyor, wherein an annular high-pressure chamber is formed in the pneumatic conveyor, the annular high-pressure chamber is connected to the suction nozzle, and a compressed air flow input port connected to the air source is formed on the annular high-pressure chamber. The compressed air entering the annular high-pressure chamber from the compressed air flow input port forms a vacuum negative pressure at the seed suction port, so that the seeds can be sucked out from the seed suction port, and when the compressed air flow input by the pneumatic conveyor remains constant, the negative pressure of the vacuum negative pressure is inversely proportional to the cross-sectional area of ​​the seed suction port; The vertical distance between the seed suction port and the transmission mechanism ranges from 2 mm to 6 mm.

2. The seed sorting device according to claim 1, characterized in that: The actuating portion is configured such that when the compressed airflow remains constant, an extended length of the actuating portion and a cross-sectional area of ​​the seed suction port are in a preset proportional relationship.

3. The seed sorting device according to claim 1, characterized in that: The suction nozzle is an elastic element with a hollow structure.

4. The seed sorting device according to claim 3, characterized in that: The elastic element is cylindrical.

5. The seed sorting device according to claim 3, characterized in that: The sorting mechanism further comprises a supporting portion, which comprises a bracket assembly and a fixed base plate. One end of the bracket assembly is arranged on the bottom surface of the box body, and the other end is movably or detachably connected to the fixed base plate.

6. The seed sorting device according to claim 5, characterized in that: A groove with a bottom passing through is formed on the fixed base plate, the pneumatic conveyor is arranged above the groove, and the suction nozzle is arranged below the groove and communicated with the pneumatic conveyor.

7. The seed sorting device according to claim 5, characterized in that: The actuating portion includes a fixing member and a pushing member, wherein the fixing member is arranged below the fixed base plate, and the pushing member is telescopically arranged on the fixing member, and the extending direction of the pushing member is toward the suction nozzle portion.

8. The seed sorting device according to claim 7, characterized in that: The seed sorting device further comprises a blocking portion disposed below the fixed base plate, the blocking portion being arranged opposite to the actuating portion, and at least a portion of the blocking portion being in contact with an outer side surface of the suction nozzle portion.

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