Seed cleaning device, seed meter and sowing method

Abstract

The present invention relates to the technical field of agricultural machinery sowing, and specifically discloses a seed cleaning device, a seed metering device and a sowing method, the seed cleaning device includes a shell, having a seed discharge port and a receiving chamber connected to each other; a seed discharge stopper, movably arranged at the seed discharge port, and capable of blocking or opening the seed discharge port, the seed discharge stopper has a plurality of disturbance holes connected to the receiving chamber, and the size of the disturbance holes is smaller than the size of the seeds; a seed collection tube, arranged on the shell, one end of the seed collection tube is connected to the seed discharge port; a seed collection and classification box, having a plurality of classification chambers, the seed collection and classification box is movably arranged so that each classification chamber can be selectively connected to the other end of the seed collection tube, and the classification chamber is used to accommodate seeds; a driving fan can blow air into the receiving chamber or suck air into the receiving chamber. The seed cleaning device of the present invention can solve the problem that the seed cleaning device in the prior art will cause damage to the seeds when disturbing the seeds, and requires manual seed cleaning, and has strong applicability and high work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery sowing, and in particular to a seed cleaning device, a seed metering device and a sowing method. Background Art

[0002] At present, the seed cleaning device is the main working part of the seed drill, and its working performance has a huge impact on the final seeding effect. Most of the current seed cleaning devices use air suction seed cleaning devices, which have some advantages, but the air suction seed cleaning devices also have the problems of poor seed disturbance effect and difficulty in cleaning seeds after sowing. The existing agricultural production of air suction seed cleaning devices mostly uses mechanical structures to disturb seeds, causing damage to the seeds themselves; and the seed cleaning process is mostly manual, which requires the machine itself to be disassembled each time, which is inefficient and consumes manpower and material resources, which is not conducive to modern agricultural production. Summary of the invention

[0003] The purpose of the present invention is to provide a seed cleaning device, a seed metering device and a sowing method to solve the problem that the seed cleaning device in the prior art may cause damage to seeds when disturbing seeds and requires manual seed cleaning.

[0004] On the one hand, the present invention provides a seed cleaning device, which includes: a shell body, having a seed unloading port and a accommodating chamber connected to each other; a seed unloading stopper, movably arranged at the seed unloading port and capable of blocking or opening the seed unloading port, the seed unloading stopper having a plurality of disturbance holes connected to the accommodating chamber, the size of the disturbance holes being smaller than the size of the seeds; a seed collecting tube, arranged on the shell body, one end of the seed collecting tube being connected to the seed unloading port; a seed collecting and classification box, having a plurality of classification chambers, the seed collecting and classification box being movably arranged so that each classification chamber can be selectively connected to the other end of the seed collecting tube, the classification chamber being used to accommodate seeds; a driving fan, arranged on a side of the seed collecting and classification box away from the shell body, the driving fan being capable of blowing air into the accommodating chamber or sucking air from the accommodating chamber.

[0005] As a preferred solution for a seed cleaning device, the seed unloading stopper has a plurality of seed disturbing columns arranged at intervals, which are located on the side of the seed unloading stopper facing the accommodating cavity. The seed disturbing columns have a connecting port, one end of which is connected to the accommodating cavity, and the other end of which is connected to one end of a seed collecting tube.

[0006] As a preferred solution of a seed cleaning device, the seed unloading baffle comprises a baffle and a rotating shaft, the rotating shaft is fixedly penetrated through the baffle, and both ends of the rotating shaft are rotatably connected to the inner wall of the accommodating chamber.

[0007] As a preferred solution of the seed cleaning device, the baffle includes an arc-shaped plate and a connecting column connected to each other, the arc-shaped plate is provided with a disturbance hole and a seed disturbance column, and the rotating shaft is fixedly arranged in the connecting column.

[0008] As a preferred solution for a seed cleaning device, the seed collection and classification box includes a box body, a driving motor and a plurality of sealing plates. The box body has a plurality of classification holes. Each sealing plate is inserted into the bottom of each corresponding classification hole to form a plurality of classification cavities. The sealing plate has a plurality of through holes, which are connected to the classification cavities. The driving motor is connected to the bottom of the box body, and the driving motor drives the box body to rotate.

[0009] As a preferred solution for a seed cleaning device, the sealing plate includes a frame, an isolation net and a fixed block. The isolation net is arranged inside the frame. The isolation net has a through hole. The size of the through hole is smaller than the size of the seed. The fixed block is connected to the side wall of the frame. The frame is inserted into the bottom of the classification hole. The fixed block abuts against the side wall of the box to limit the insertion depth of the frame. The driving fan is arranged on the side of the isolation net away from the shell.

[0010] As a preferred solution for a seed cleaning device, the seed collecting tube includes an arc tube and a rectangular tube connected to each other. The arc tube is connected to the shell. The arc tube has an arc-shaped seed dropping port and an arc-shaped inner wall. The arc-shaped seed dropping port is connected to the seed unloading port, and the arc-shaped inner wall is used to cooperate with the seed unloading stopper.

[0011] As a preferred solution of the seed cleaning device, the seed cleaning device also includes a seed collecting tube, one end of the seed collecting tube is connected to the rectangular tube, and the other end of the seed collecting tube is connected to the classification chamber.

[0012] As a preferred solution for a seed cleaning device, the seed collecting tube includes a buffer tube and a connecting plate which are connected to each other. The buffer tube is connected to the rectangular tube. The connecting plate has a connecting hole which connects the buffer tube to the classification cavity. The shape of the connecting plate matches the shape of the classification cavity to cover the classification cavity.

[0013] As a preferred solution of the seed cleaning device, the cavity of the buffer tube includes a rectangular cavity and a circular cavity which are interconnected, there is a transition fillet between the rectangular cavity and the circular cavity, the circular cavity is connected to the connecting hole, and the rectangular cavity is connected to the rectangular tube.

[0014] As a preferred embodiment of the seed cleaning device, the seed cleaning device also includes a venturi tube, which includes a contraction section, a throat and a diffusion section connected in sequence, wherein the end of the contraction section with a larger size is connected to the rectangular tube, and the end of the diffusion section with a larger size is connected to one end of the seed collecting tube.

[0015] As a preferred solution for a seed cleaning device, the seed cleaning device includes a first flange, a second flange, a third flange, a fourth flange, a first seal and a second seal. The first flange is connected to the rectangular tube, the second flange is connected to the contraction section, the first seal is arranged between the first flange and the second flange, and the first flange and the second flange are detachably connected; the third flange is connected to the diffusion section, the fourth flange is connected to the buffer tube, the second seal is arranged between the third flange and the fourth flange, and the third flange and the fourth flange are detachably connected.

[0016] On the other hand, the present invention provides a seed metering device, comprising a seed metering disk and a seed cleaning device in any of the above schemes, wherein the accommodating cavities in the seed metering disk and the seed cleaning device are connected to discharge the seeds in the accommodating cavity to a desired position.

[0017] On the other hand, the present invention provides an operating method, which is applied to the above-mentioned seeder, including: S1: selecting a classification chamber and connecting it to a seed collection tube; S2: using a driving fan to blow air into the accommodating chamber for a preset time to disturb a type of seeds in the accommodating chamber; S3: using a seeding disk to complete the sowing of a type of seeds; S4: driving the fan to suck air from the accommodating chamber, and sucking the remaining seeds in the accommodating chamber into the corresponding classification chamber for storage; S5: adjusting the seed collection and classification box, selecting another classification chamber and connecting it to the seed collection tube, and placing another type of seeds to be sown in the accommodating chamber; repeating steps S2-S5 until the entire sowing is completed, and extracting different types of seeds from multiple classification chambers for storage.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a seed cleaning device, which includes a seed unloading baffle, a seed collecting tube, a seed collecting and classifying box and a driving fan. When the seed cleaning device of the present invention is in a seed filling state, the seed unloading baffle is used to block the seed unloading port, and the driving fan is used to blow air into the accommodating chamber, so that the wind will disturb the seeds in the accommodating chamber after passing through the disturbance hole, thereby achieving the effect of disturbing the seeds. This setting method can avoid the mechanical seed disturbance method in the prior art and will not cause damage to the seeds; when the seed cleaning device of the present invention is in a seed collecting state, the seed unloading baffle is used to avoid the seed unloading port, and the driving fan is used to suck air into the accommodating chamber, so that the seeds can smoothly fall into the classification chamber, thereby achieving the effect of storing the seeds, wherein multiple classification chambers are set to meet the classification requirements of multiple seeds, without the need for manual seed cleaning, and avoid the need to disassemble the seed cleaning device when other seeds need to be replaced. The seed cleaning device of the present invention can solve the problem that the seed cleaning device in the prior art will cause damage to the seeds when disturbing the seeds and requires manual seed cleaning, and has strong applicability and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the seed cleaning device in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the seed cleaning device in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a structural schematic diagram of a seed unloading stopper in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a seed collecting tube in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the structure of the venturi tube in the embodiment of the present invention;

[0025] Figure 6 The structure of the seed collecting tube in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 7 The structure of the seed collecting tube in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 8 Schematic diagram of the structure of the seed collection and classification box in an embodiment of the present invention;

[0028] Fig. 9 Schematic diagram of the structure of the blocking plate in an embodiment of the present invention.

[0029] In the figure:

[0030] 1. Shell; 11. Accommodating chamber;

[0031] 2. seed unloading stopper; 21. disturbance hole; 22. seed disturbance column; 23. rotating shaft; 24. connecting column; 25. arc plate;

[0032] 3. Seed collection tube; 31. Arc tube; 311. Arc inner wall; 312. Arc seed drop port; 32. Rectangular tube;

[0033] 4. Venturi tube; 41. Contraction section; 42. Throat; 43. Diffusion section;

[0034] 5. Seed collecting tube; 51. Buffer tube; 511. Rectangular cavity; 512. Circular cavity; 513. Transition fillet; 52. Connecting plate; 521. Connecting hole;

[0035] 6. Seed collection and classification box; 61. Classification cavity; 62. Box body; 63. Isolation net; 631. Through hole; 632. Fixing block; 64. Blocking plate; 641. Frame body;

[0036] 71. First flange; 72. Second flange; 73. Third flange; 74. Fourth flange; 75. First sealing member; 76. Second sealing member. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] like Figure 1 to Figure 2As shown, this embodiment provides a seed cleaning device, which includes a housing 1, a seed unloading stopper 2, a seed collecting tube 3, a seed collecting and sorting box 6, and a driving fan. The housing 1 has a seed unloading port and a receiving chamber 11 that are interconnected; the receiving chamber 11 can accommodate seeds, and the seed unloading stopper 2 has a plurality of disturbance holes 21 that are connected to the receiving chamber 11, and the size of the disturbance holes 21 is smaller than the size of the seeds; wherein the seed collecting and sorting box 6 has a plurality of sorting chambers 61 for accommodating seeds. Among them, when the seed cleaning device of the present invention is in the seed filling state, the seed unloading stopper 2 blocks the seed unloading port, and at the same time, the driving fan is used to blow air to the accommodating chamber 11, so that the wind will disturb the seeds in the accommodating chamber after passing through the disturbance hole 21, thereby achieving the effect of disturbing the seeds. This setting method can avoid the mechanical seed disturbance method in the prior art and will not cause damage to the seeds; when the seed cleaning device of the present invention is in the seed collecting state, the seed unloading stopper 2 avoids the seed unloading port, and at the same time, the driving fan is used to suck air from the accommodating chamber 11, so that the seeds can smoothly fall into the classification chamber 61, thereby achieving the effect of storing the seeds. Among them, setting up multiple classification chambers 61 can meet the classification requirements of multiple seeds, avoiding the need to disassemble the seed cleaning device when other seeds need to be replaced. The seed cleaning device of the present invention can solve the problem that the seed cleaning device in the prior art will cause damage to the seeds when disturbing the seeds, and requires manual seed cleaning, and has strong applicability and high work efficiency.

[0042] Optionally, the driving fan is a conversion fan. The conversion fan has the advantages of small size, low noise and large air volume. The driving fan can also be a centrifugal fan, an axial flow fan, etc.

[0043] like Figure 3 As shown, in order to further improve the seed disturbance effect on the seeds in the accommodating chamber 11, the seed unloading stopper 2 of the present invention is also provided with a plurality of seed disturbance columns 22 arranged at intervals, and the seed disturbance columns 22 are arranged to extend to the middle of the accommodating chamber 11, and the purpose is to fully disturb the seeds located in the middle of the accommodating chamber 11, thereby improving the seed disturbance effect. At the same time, this seed disturbance method will not cause damage to the seeds, avoiding the method of using mechanical seed disturbance in the prior art. Among them, when in the seed collection state, the seed disturbance column 22 can also guide the seed flow.

[0044] Specifically, Figure 3 As shown, the seed unloading stopper 2 includes a baffle and a rotating shaft 23. The two ends of the rotating shaft 23 are rotatably connected to the inner wall of the accommodating chamber 11. At the same time, the baffle is sleeved on the rotating shaft 23 so that the baffle can rotate with the rotating shaft 23, thereby achieving the purpose of blocking or avoiding the seed unloading port.

[0045] Optionally, the seed cleaning device includes a driving device, which is connected to the seed unloading stopper 2 to realize the rotation of the seed unloading stopper 2. The driving device can be a cylinder, an electric push rod, etc., and the baffle is directly retracted and driven to rotate by the cylinder or the electric push rod.

[0046] As a preferred embodiment, the driving device includes a motor and a reducer, the output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the rotating shaft 23 to drive the rotating shaft 23 to rotate.

[0047] from Figure 3 It can be seen that the baffle includes an arc plate 25 and a connecting column 24 connected to each other. The shape of the arc plate 25 matches the shape of the seed unloading port to better block the seed unloading port. The function of the connecting column 24 is mainly to connect the rotating shaft 23, thereby driving the arc plate 25 to block or avoid the seed unloading port.

[0048] from Figure 4 It can be seen that the seed collecting tube 3 includes an arc tube 31 and a rectangular tube 32 connected to each other, wherein the arc tube 31 has an arc seed dropping port 312, which completely wraps the seed unloading port and is connected to the seed unloading port, ensuring that the seeds falling from the seed unloading port will not be blocked, and ensuring that the seeds located in the accommodating chamber 11 can all fall into the seed collecting tube 3 to avoid seed leakage; at the same time, the arc tube 31 also has an arc inner wall 311, the purpose of which is that when the seed collecting state is in progress, the seed unloading stopper 2 can cooperate with the arc inner wall 311 to stop the seed, making the structural design more reasonable and compact.

[0049] like Figure 5 As shown, the seed cleaning device of the present invention also includes a venturi tube 4. When the seeds enter the contraction section 41 of the venturi tube 4 from the seed collecting tube 3, the rectangular cross-sectional area decreases in a gradient manner, and is therefore affected by the Venturi effect. The suction airflow speed increases, and the seeds begin to gradually accelerate. When accelerated to the throat 42, the cross-sectional area remains unchanged, and the seeds enter a stable acceleration stage until the seeds enter the diffusion section 43. The rectangular cross-sectional area begins to increase in a gradient manner. At this time, the airflow speed slows down, and the seeds slowly accelerate into a stable state, thereby entering the seed collecting tube 5 at a stable speed, thereby improving the working efficiency of the device without damaging the seeds.

[0050] In the present invention, Figure 6 and Figure 7 As shown, the seed cleaning device also includes a seed collecting tube 5, which includes a buffer tube 51 and a connecting plate 52 connected to each other. The connecting plate 52 has a connecting hole 521, and the connecting hole 521 connects the buffer tube 51 with the classification chamber 61. The seed collecting tube 5 can be used to collect seeds together so that they fall into the classification chamber 61. Specifically, the seed collecting tube 5 includes a buffer tube 51 and a connecting plate 52 connected to each other. The buffer tube 51 can buffer the falling seeds to prevent them from being damaged; the shape of the connecting plate 52 is matched with the shape of the classification chamber 61, so that the classification chamber 61 can be covered to prevent the occurrence of seed leakage. The connecting hole 521 is mainly used to connect the buffer tube 51 and the classification chamber 61.

[0051] Furthermore, the cavity of the buffer tube 51 includes a rectangular cavity 511 and a circular cavity 512 that are interconnected, and a transition fillet 513 is provided between the rectangular cavity 511 and the circular cavity 512. The transition fillet 513 can buffer the falling seeds and further reduce the damage of the seeds. When the seeds slide along the transition fillet 513, they can obtain a vertical speed and fall into the classification cavity 61.

[0052] In order to store the seeds after planting, Figure 8 and Fig. 9 As shown, the present invention designs a seed collection and classification box 6, which includes a box body 62, a driving motor and a plurality of blocking plates 64. The box body 62 has a plurality of classification holes, and each blocking plate 64 is respectively inserted into the bottom of each corresponding classification hole to form a plurality of classification cavities 61. The blocking plate 64 has a plurality of through holes 631, and the plurality of through holes 631 are connected to the classification cavities 61. The box body 62 is driven to rotate by the driving motor, so that each classification cavity 61 can store seeds, so that various kinds of seeds can be classified and stored, which improves the working efficiency of the seed cleaning device, avoids the need to disassemble the seed cleaning device to change seeds in the prior art, and reduces labor costs.

[0053] Each blocking plate 64 is inserted into the bottom of each corresponding classification hole to form a plurality of classification cavities 61. When a certain type of seeds is needed, the blocking plate 64 can be pulled out and the seeds fall naturally, thereby achieving the purpose of seed collection.

[0054] In order to allow the wind driving the fan to blow smoothly into the accommodating chamber 11, Fig. 9 As shown, the blocking plate 64 is also provided with an isolation net 63, wherein the isolation net 63 has a plurality of through holes 631, the size of the through holes 631 is smaller than the size of the seeds, so as to prevent the seeds from falling; at the same time, a fixing block 632 is provided on the side wall of the frame 641, and the fixing block 632 is abutted against the side wall of the box body 62, so as to limit the insertion depth of the frame 641, and also facilitate the pulling out of the frame 641.

[0055] In the present invention, the box body 62 is cylindrical, and the number of classification cavities 61 is 6, which are distributed at intervals along the circumference of the box body 62 .

[0056] In this embodiment, the cleaning device includes a first flange 71, a second flange 72, a third flange 73, a fourth flange 74, a first seal 75 and a second seal 76. The rectangular tube 32 and the contraction section 41 can be connected through the first flange 71 and the second flange 72, and the first seal 75 is arranged between the first flange 71 and the second flange 72 to ensure the air tightness of the device; similarly, the diffusion section 43 and the buffer tube 51 can be connected through the third flange 73 and the fourth flange 74, and the second seal 76 is arranged between the third flange 73 and the fourth flange 74 to ensure the air tightness of the device.

[0057] This embodiment also provides a seed metering device, including a seed metering disk and the above-mentioned seed cleaning device, wherein the accommodating chamber 11 in the seed metering disk and the seed cleaning device is communicated with each other to discharge the seeds in the accommodating chamber 11 to a desired position.

[0058] In the present invention, the seeds in the accommodating cavity 11 are discharged to the desired position through the seeding disk, thereby achieving the purpose of seeding. At the same time, it can also improve the seed filling effect of the air seeding device and realize multi-batch classification and seed cleaning of the seeding device, thereby improving the utilization rate of seed resources, improving work efficiency and saving manpower.

[0059] The present embodiment also provides an operation method, which is applied to the above-mentioned seed metering device, including: S1: selecting a classification chamber 61 to be connected to the seed collecting tube 3; S2: using a driving fan to blow air to the accommodating chamber 11 for a preset time to disturb a type of seeds in the accommodating chamber 11; S3: using a seeding disk to complete the sowing of a type of seeds; S4: driving the fan to suck air from the accommodating chamber 11, and sucking the remaining seeds in the accommodating chamber 11 into the corresponding classification chamber 61 for storage; S5: adjusting the seed collection and classification box 6, selecting another classification chamber 61 to be connected to the seed collecting tube 3, and placing another type of seeds to be sown in the accommodating chamber 11; repeating steps S2-S5 until the entire sowing is completed, and extracting different types of seeds from multiple classification chambers 61 for storage.

[0060] The working process of the seed cleaning device of the present invention is as follows:

[0061] S1: When the seed cleaning device is in the seed filling state, seeds will be dropped onto the seed unloading baffle. At this time, the disturbance holes and seed disturbance columns on the seed unloading baffle will drive the airflow of the fan to the accommodating chamber, thereby disturbing the seeds in the accommodating chamber and improving the seed disturbance effect.

[0062] S2: When the set disturbance time is reached, the fan is driven to enter the off state.

[0063] S3: When a row of sowing is completed in the plot, the fan is driven to start, and the wind force generated is suction force to clean the seeds by air suction.

[0064] S4: The seed unloading stopper is opened under the control of the motor, and the remaining seeds fall into the seed collecting tube under the combined action of the fan suction and the seeds.

[0065] S5: The seeds enter the Venturi tube through the lower port of the seed collecting tube. In the contraction section of the Venturi tube, the cross-sectional area of ​​the tube mouth decreases gradually, the seed falling speed increases, and the cross-sectional area reaches the minimum when it reaches the throat of the Venturi tube; after passing through the throat, the seeds enter the diffusion section of the Venturi tube, the seed falling speed begins to slow down, and the cross-sectional area of ​​the Venturi tube reaches the maximum at the outlet of the diffusion section.

[0066] S6: The seeds pass through the venturi tube and enter the seed collecting tube, where they are buffered by the inner wall of the seed collecting tube and then enter the circular cavity of the seed collecting tube until they enter the classification cavity.

[0067] S7: The seeds in the seed collecting tube fall into the seed collecting and classifying box, and the seeds remain still on the isolation net. At this time, the set control time is reached, and the seed collecting and classifying box rotates under the drive of the driving motor and enters the working stage of the next row of plots.

[0068] S8: Repeat steps S1-S7 in this way to achieve multiple batches of classification and purification.

[0069] S9: After the entire sowing process is completed, the sealing plate in the seed collection and classification box is extracted, and the seeds can fall from the seed collection and classification box and be distinguished according to different types.

[0070] The seed cleaning device of the present invention has the following beneficial effects:

[0071] The present invention provides a seed cleaning device, which is connected in sequence by a seed unloading block, a seed collecting tube, a venturi tube, and a seed collecting and sorting box to form a seed dropping channel with good airtightness. The seed unloading block is provided with a disturbance hole and a seed disturbing column, which can disturb the seeds at the bottom of the seed and the seeds inside at the same time, comprehensively improve the seed filling effect, do not damage the seeds, improve the utilization rate of seed resources, and is suitable for plot breeding experiments. By arranging a seed collecting tube under the seed unloading block and arranging an arc-shaped inner wall inside the seed collecting tube, it is convenient to open and close the seed unloading block, so that the whole device is more coordinated and will not limit the design of the venturi tube. By designing a venturi tube at the lower end of the seed collecting tube, the seeds can be gradually accelerated and the speed can be stabilized from the contraction section to the throat and then to the diffusion section, thereby improving the working efficiency of the device and reducing the damage to the remaining seeds. The seed collecting and sorting box adopts a uniform fan-shaped design to maximize the use of the limited disc space, making the design of the device more compact; at the same time, by rotating the seed collecting and sorting box under the drive of a driving motor, multiple batches of classified seeds can be realized to improve the working efficiency and save a lot of manpower. The bottom of the seed classification box is equipped with an isolation net, and the lower end is connected to a fan to realize the air blowing filling and air suction seed cleaning process. In general, the device can realize seed filling and seed cleaning at the same time, with a reasonable and compact structural design, reducing the waste of manpower, preventing seed damage, realizing multi-batch classification and seed cleaning, and improving the working efficiency of the seed meter.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A seed cleaning device, characterized in that: include: A housing (1) having a seed discharge port and a receiving chamber (11) which are interconnected; a seed unloading stopper (2) movably arranged at the seed unloading port and capable of blocking or opening the seed unloading port, the seed unloading stopper (2) having a plurality of disturbance holes (21) in communication with the accommodating chamber (11), the size of the disturbance holes (21) being smaller than the size of the seeds; A seed collecting tube (3) is arranged on the housing (1), and one end of the seed collecting tube (3) is connected to the seed discharge port; A seed collecting and classifying box (6) having a plurality of classifying cavities (61), wherein the seed collecting and classifying box (6) is movably arranged so that each of the classifying cavities (61) can selectively communicate with the other end of the seed collecting tube (3), and the classifying cavities (61) are used to accommodate seeds; A driving fan is arranged on a side of the seed collection and classification box (6) away from the housing (1); The seed cleaning device has a seed filling state and a seed collecting state. In the seed filling state, the driving fan can blow air into the accommodating chamber (11); in the seed collecting state, the driving fan can suck air from the accommodating chamber (11).

2. The seed cleaning device according to claim 1, characterized in that: The seed unloading stopper (2) has a plurality of seed disturbing columns (22) arranged at intervals, the seed disturbing columns (22) being located on a side of the seed unloading stopper (2) facing the accommodating chamber (11), the seed disturbing columns (22) having a connecting port, one end of the connecting port being connected to the accommodating chamber (11), and the other end of the connecting port being connected to one end of the seed collecting tube (3).

3. The seed cleaning device according to claim 2, characterized in that: The seed unloading stopper (2) comprises a stopper plate and a rotating shaft (23); the rotating shaft (23) is fixedly disposed on the stopper plate, and both ends of the rotating shaft (23) are rotatably connected to the inner wall of the accommodating chamber (11).

4. The seed cleaning device according to claim 3, characterized in that: The baffle comprises an arc-shaped plate (25) and a connecting column (24) connected to each other, the arc-shaped plate (25) is provided with the disturbance hole (21) and the seed disturbance column (22), and the rotating shaft (23) is fixedly arranged in the connecting column (24).

5. The seed cleaning device according to claim 1, characterized in that: The seed collection and classification box (6) comprises a box body (62), a driving motor and a plurality of blocking plates (64); the box body (62) has a plurality of classification holes; each of the blocking plates (64) is respectively inserted into the bottom of each corresponding classification hole to form a plurality of classification cavities (61); the blocking plates (64) have a plurality of through holes (631); the plurality of through holes (631) are connected to the classification cavities (61); the driving motor is connected to the bottom of the box body (62); and the driving motor drives the box body (62) to rotate.

6. The seed cleaning device according to claim 5, characterized in that: The blocking plate (64) comprises a frame (641), an isolation net (63) and a fixing block (632); the isolation net (63) is arranged inside the frame (641); the isolation net (63) has the through hole (631); the size of the through hole (631) is smaller than the size of the seed; the fixing block (632) is connected to the side wall of the frame (641); the frame (641) is inserted into the bottom of the classification hole; the fixing block (632) abuts against the side wall of the box body (62) to limit the insertion depth of the frame (641); and the driving fan is arranged on a side of the isolation net (63) away from the housing (1).

7. The seed cleaning device according to claim 1, characterized in that: The seed collecting tube (3) comprises an arc-shaped tube (31) and a rectangular tube (32) connected to each other; the arc-shaped tube (31) is connected to the housing (1); the arc-shaped tube (31) has an arc-shaped seed dropping opening (312) and an arc-shaped inner wall (311); the arc-shaped seed dropping opening (312) is connected to the seed unloading opening; the rectangular tube (32) is connected to the classification chamber (61); and the arc-shaped inner wall (311) is used to cooperate with the seed unloading stopper (2) for stopping.

8. The seed cleaning device according to claim 7, characterized in that: The seed cleaning device further comprises a seed collecting tube (5), one end of the seed collecting tube (5) being in communication with the rectangular tube (32), and the other end of the seed collecting tube (5) being in communication with the classification chamber (61).

9. The seed cleaning device according to claim 8, characterized in that: The seed collecting tube (5) comprises a buffer tube (51) and a connecting plate (52) which are connected to each other. The buffer tube (51) is connected to the rectangular tube (32). The connecting plate (52) has a connecting hole (521). The connecting hole (521) connects the buffer tube (51) with the classification cavity (61). The shape of the connecting plate (52) matches the shape of the classification cavity (61) so as to cover the classification cavity (61).

10. The seed cleaning device according to claim 9, characterized in that: The cavity of the buffer tube (51) comprises a rectangular cavity (511) and a circular cavity (512) which are connected to each other, a transition fillet (513) is provided between the rectangular cavity (511) and the circular cavity (512), the circular cavity (512) is connected to the connecting hole (521), and the rectangular cavity (511) is connected to the rectangular tube (32).

11. The seed cleaning device according to claim 9, characterized in that: The seed cleaning device further comprises a venturi tube (4), wherein the venturi tube (4) comprises a contraction section (41), a throat (42) and a diffusion section (43) connected in sequence, wherein the end of the contraction section (41) having a larger size is connected to the rectangular tube (32), and the end of the diffusion section (43) having a larger size is connected to one end of the seed collecting tube (5).

12. The seed cleaning device according to claim 11, characterized in that: The seed cleaning device comprises a first flange (71), a second flange (72), a third flange (73), a fourth flange (74), a first seal (75) and a second seal (76); the first flange (71) is connected to the rectangular tube (32); the second flange (72) is connected to the contraction section (41); the first seal (75) is arranged between the first flange (71) and the second flange (72); the first flange (71) and the second flange (72) are detachably connected; the third flange (73) is connected to the diffusion section (43); the fourth flange (74) is connected to the buffer tube (51); the second seal (76) is arranged between the third flange (73) and the fourth flange (74); the third flange (73) and the fourth flange (74) are detachably connected.

13. A seed metering device, characterized in that: It comprises a seed-discharging tray and a seed-cleaning device according to any one of claims 1 to 12, wherein the seed-discharging tray is connected to a receiving cavity (11) in the seed-cleaning device so as to discharge the seeds in the receiving cavity (11) to a desired position.

14. A sowing method, characterized in that: The seed metering device according to claim 13 comprises: S1: selecting one of the classification chambers (61) and connecting it to the seed collection tube (3); S2: using the driving fan to blow air into the containing chamber (11) for a preset time, so as to disturb a type of seeds in the containing chamber (11); S3: Sowing a type of seeds using the seed tray; S4: the driving fan sucks air from the containing chamber (11), and sucks the remaining seeds in the containing chamber (11) into the corresponding classification chamber (61) for storage; S5: adjusting the seed collection and classification box (6), selecting another classification cavity (61) to be connected to the seed collection tube (3), and placing another type of seeds to be sown in the containing cavity (11); Steps S2 to S5 are repeated until the entire sowing process is completed, and seeds of different types in the plurality of classification chambers (61) are extracted and stored separately.

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