A Chinese medicine sowing device with automatic seed screening

Abstract

The invention relates to the technical field of sowing, and in particular to a Chinese medicine sowing device for automatic seed screening, which is used to solve the problem of single screening effect of existing automatic seed screening and planting devices. The device comprises a size screening mechanism and a quality screening mechanism. The size screening mechanism comprises a box body, a partition is arranged in the box body, the partition divides the box body into a drying chamber and a water storage chamber, and the seeds enter the water storage chamber from the drying chamber and sink; the quality screening mechanism comprises two wedge blocks symmetrically connected to the bottom of the water storage chamber, a gap is provided between the two wedge blocks, a push box is slidably connected in the gap, the upper and lower parts of the gap are respectively connected to a triangular block and a discharge door, the push box, the triangular block, the discharge door and the inner wall of the water storage chamber form a drainage chamber, a drainage hole is penetrated on the triangular block, and a one-way valve is arranged in the drainage hole; the device cooperates with the size screening mechanism and the quality screening mechanism, so that the size of the seeds can not only be screened, but also the seeds of poor quality can be removed.

Description

Technical Field

[0001] The invention relates to the technical field of sowing, in particular to a Chinese medicine sowing device with automatic seed screening. Background Art

[0002] In the process of Chinese medicine cultivation, seed screening is a key link in ensuring the quality and yield of Chinese medicine.

[0003] The traditional method of screening Chinese medicinal seeds mainly relies on manual screening, which is not only inefficient but also difficult to ensure the accuracy and consistency of screening.

[0004] With the development of agricultural mechanization, automatic seed screening devices have gradually become an important tool in the field of traditional Chinese medicine cultivation.

[0005] However, most of the existing automatic seed screening devices can only achieve single-function screening, such as screening only based on the size of the seeds, but cannot take the quality of the seeds into consideration at the same time.

[0006] In practical applications, the quality of seeds has an important impact on their growth and final efficacy.

[0007] In addition, the existing sowing device sows the seeds after screening, and cannot sow in time after screening, resulting in low planting efficiency. Therefore, it is particularly important to develop an automatic seed screening device that can simultaneously achieve size and quality screening. Summary of the invention

[0008] The invention provides a traditional Chinese medicine sowing device with automatic seed screening, so as to solve the problem that the existing automatic seed screening and planting device has a single screening effect.

[0009] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0010] A Chinese medicine sowing device for automatic seed screening includes a size screening mechanism and a quality screening mechanism. The size screening mechanism includes a box body, a partition is arranged in the box body, and the partition divides the box body into a drying chamber and a water storage chamber. The seeds enter the water storage chamber from the drying chamber and sink.

[0011] The quality screening mechanism includes two wedge blocks symmetrically connected to the bottom of the water storage chamber, a gap is provided between the two wedge blocks, a push box is slidably connected in the gap, a triangular block and a discharge door are respectively connected to the upper and lower parts of the gap, the push box, the triangular block, the discharge door and the inner wall of the water storage chamber form a drainage chamber, a drainage hole is penetrated on the triangular block, and a one-way valve is provided in the drainage hole;

[0012] The pushing box can enter or move away from the drain chamber when sliding. When the pushing box enters the drain chamber, it pushes seeds and water into the drain chamber simultaneously. The water in the drain chamber is discharged to the water storage chamber through the drainage hole. When the pushing box moves away from the drain chamber but does not leave the drain chamber, the discharge door swings and resets to form a seed discharge port, so that the drained seeds can be discharged.

[0013] Furthermore, the quality screening mechanism also includes a baffle, which is connected to the two wedge blocks and the partition, and the push box slides at the bottom of the baffle, and the four side surfaces of the push box are respectively fitted with the two wedge blocks, the lower surface of the baffle and the bottom wall of the box body, and there is a gap between the baffle and the triangular block. When the push box is away from the drainage chamber, the seeds fall through the gap between the drainage chamber and the push box.

[0014] Furthermore, the bottom wall of the box body is connected to an arc cylinder, the output end of the arc cylinder is connected to the discharge door, the swing axis of the discharge door is located at the center of the arc trajectory of the arc cylinder, and a position sensor is arranged in the triangular block. When the position sensor detects that the push box slides into the drain chamber, the arc cylinder maintains an extended state, and when the position sensor detects that the push box slides away from the drain chamber, the arc cylinder first shortens and then lengthens.

[0015] Furthermore, the quality screening mechanism also includes a straight cylinder, which is connected to the partition, and the output end of the straight cylinder is connected to a rectangular block, which slides in the push box, and a rectangular plate is connected to the push box, and a through hole is provided in the middle of the rectangular plate, and a first spring is connected between the rectangular plate and the rectangular block, and the push box has an opening toward the side wall of the box body, and an elastic membrane is connected to the opening, and after the push box slides into the drain chamber, the rectangular block slides into the push box to make the elastic membrane bulge, so that the elastic membrane further compresses the internal space of the drain chamber.

[0016] Furthermore, the size screening mechanism also includes a telescopic rod connected to the inner wall of the drying chamber, the end of the telescopic rod is connected to a screen, the upper surface of the screen is connected to a U-shaped frame, the partition is provided with a through groove that cooperates with the screen and the U-shaped frame, and the opening of the U-shaped frame faces the water storage chamber, the screen slides back and forth in the drying chamber, and when the screen slides, small-particle seeds fall through the screen and large-particle seeds enter the water storage chamber through the through groove on the partition.

[0017] Furthermore, the size screening mechanism also includes a rotating shaft that rotates symmetrically on both sides of the screen, a swing plate is connected to the rotating shaft, and a groove that cooperates with the swing plate is opened on the U-shaped frame.

[0018] Furthermore, it also includes a vibration mechanism, which is arranged in the water storage chamber and includes a vibration rod, both ends of which are respectively connected to the top wall of the box body and the wedge block, the vibration rod is connected to a mounting plate, a slide plate is slidably connected to the upper part of the mounting plate, a second spring is connected between the slide plate and the mounting plate, the rotating shaft passes through the partition and extends to the water storage chamber where a protrusion is provided, and when the rotating shaft rotates, the protrusion repeatedly presses the slide plate.

[0019] Furthermore, it also includes a sowing mechanism, which includes a bracket, the bracket is connected to the box body, and a hopper is connected to the bracket, and the opening of the hopper faces the seed discharge port of the drainage chamber.

[0020] Furthermore, the sowing mechanism also includes a top plate and a bottom plate, both of which are connected to the bracket, a turntable is rotatably connected between the top plate and the bottom plate, a storage hole is provided on the turntable, a discharge pipe is connected to the bottom of the hopper, the discharge pipe is connected to the top plate, and a discharge hole that is non-coaxial with the discharge pipe is provided on the bottom plate, and when the turntable rotates, seeds enter the storage hole through the discharge pipe and are discharged from the discharge hole.

[0021] Furthermore, the top plate is provided with a pressure stabilizing hole coaxial with the discharge hole.

[0022] The beneficial effects of the present invention are analyzed as follows:

[0023] A Chinese medicine sowing device for automatic seed screening comprises a size screening mechanism and a quality screening mechanism. The size screening mechanism comprises a box body, a partition is arranged in the box body, the partition divides the box body into a drying chamber and a water storage chamber, the seeds enter the water storage chamber from the drying chamber and sink; the quality screening mechanism comprises two wedge blocks symmetrically connected to the bottom of the water storage chamber, a gap is provided between the two wedge blocks, a push box is slidably connected in the gap, the upper and lower parts of the gap are respectively connected to a triangular block and a discharge door, the push box, the triangular block, the discharge door and the inner wall of the water storage chamber form a drainage chamber, the triangular block is penetrated by a drainage hole, and a one-way valve is arranged in the drainage hole; the push box can enter or leave the drainage chamber when sliding, and when the push box enters the drainage chamber, the seeds and water are simultaneously pushed into the drainage chamber, and the water in the drainage chamber is discharged to the water storage chamber through the drainage hole, and when the push box is away from the drainage chamber but not separated from the drainage chamber, the discharge door swings and resets to form a seed discharge port, so that the drained seeds can be discharged.

[0024] The seeds are poured into the size screening mechanism in the drying chamber, and the size screening mechanism screens the seeds according to their size. Large seeds enter the water storage chamber, seeds of good quality sink, and seeds of poor quality float. The sunken seeds are guided by the wedge blocks to slide between the two wedge blocks, and then the push box slides into the drain chamber, pushing the seeds and water into the drain chamber. The water entering the drain chamber is discharged from the drainage holes of the triangular blocks under the action of pressure and flows back into the water storage chamber. The seeds are retained in the drain chamber, reducing the water loss in the water storage chamber. Then the push box slides in the direction away from the drain chamber, and the discharge door swings to form a seed discharge port at the lower part of the water storage chamber, ensuring that the push box is away from the drain chamber without being interfered by negative pressure, and at the same time, the seeds are discharged, thereby achieving the purpose of seed screening. Through the coordinated arrangement of the above-mentioned structure, the size of the seeds can not only be screened, but also the seeds of poor quality can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a cross-sectional view of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the size screening mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the quality screening mechanism of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the rectangular block of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the vibration mechanism of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the seeding mechanism of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the storage hole of the present invention.

[0034] icon:

[0035] 100, size screening mechanism; 110, box; 120, drying chamber; 130, water storage chamber; 140, partition; 150, screen; 151, U-shaped frame; 160, telescopic rod; 170, rotating shaft; 180, swing plate; 200, quality screening mechanism; 210, wedge block; 220, baffle; 230, straight cylinder; 231, rectangular block; 232, first spring; 240, drainage chamber; 241, triangular block; 242, discharge door; 243, arc Cylinder; 250, push box; 251, rectangular plate; 252, through hole; 253, elastic membrane; 300, vibration mechanism; 310, vibration rod; 320, mounting plate; 330, slide plate; 340, second spring; 350, bump; 400, sowing mechanism; 410, bracket; 420, hopper; 421, discharge pipe; 430, top plate; 431, pressure-stabilizing hole; 440, bottom plate; 441, discharge hole; 450, turntable; 451, storage hole. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[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] Examples, such as Figure 1-Figure 8As shown, a Chinese medicine sowing device for automatic seed screening includes a size screening mechanism 100 and a quality screening mechanism 200. The size screening mechanism 100 includes a box body 110, and a partition 140 is arranged in the box body 110. The partition 140 divides the box body 110 into a drying chamber 120 and a water storage chamber 130. The seeds enter the water storage chamber 130 from the drying chamber 120 and sink; the quality screening mechanism 200 includes two wedge blocks 210 symmetrically connected to the bottom of the water storage chamber 130, and there is a gap between the two wedge blocks 210. A push box 250 is slidably connected in the gap, and the upper and lower parts of the gap are respectively connected to triangular blocks 2 41 and the discharge door 242, the push box 250, the triangular block 241, the discharge door 242 and the inner wall of the water storage chamber 130 form a drainage chamber 240, the triangular block 241 is penetrated with a drainage hole, and a one-way valve is arranged in the drainage hole; the push box 250 can enter or move away from the drainage chamber 240 when sliding, and when the push box 250 enters the drainage chamber 240, it pushes the seeds and water into the drainage chamber 240 simultaneously, and the water in the drainage chamber 240 is discharged to the water storage chamber 130 through the drainage hole, and when the push box 250 moves away from the drainage chamber 240 but does not leave the drainage chamber 240, the discharge door 242 swings and resets to form a seed discharge port, so that the seeds after drainage can be discharged.

[0041] The working mechanism of the sowing device provided in this embodiment is as follows:

[0042] The device is installed as a whole on a vehicle, and the vehicle moves on the ground for sowing. When in use, the box cover of the box body 110 is opened (not shown in the figure), and the seeds are poured into the size screening mechanism 100 in the drying chamber 120. The size screening mechanism 100 screens the size of the seeds, and the large seeds enter the water storage chamber 130. The seeds of good quality sink, and the seeds of poor quality float. The sinking seeds are guided by the wedge block 210 to slide between the two wedge blocks 210, and then the box 250 is pushed to slide into the drainage chamber 240, so that the seeds and water are pushed into the drainage chamber 240. The water entering the drainage chamber 240 is subjected to the pressure. The water is discharged from the drainage hole of the triangular block 241 and flows back into the water storage chamber 130, and the seeds are retained in the drainage chamber 240, so that the water loss in the water storage chamber 130 is reduced. Then, the push box 250 slides in the direction away from the drainage chamber 240, and the discharge door 242 swings to form a seed discharge port at the lower part of the water storage chamber 130, ensuring that the push box 250 is away from the drainage chamber 240 without being interfered by negative pressure, and at the same time, the seeds are discharged, thereby achieving the purpose of seed screening. Through the coordinated arrangement of the above-mentioned structure, the size of the seeds can not only be screened, but also the seeds of poor quality can be removed.

[0043] Regarding the structure of the quality screening mechanism 200, specifically:

[0044] The quality screening mechanism 200 also includes a baffle 220, which is connected to two wedge blocks 210 and a partition 140. The push box 250 slides at the bottom of the baffle 220, and the four side surfaces of the push box 250 are respectively fitted with the two wedge blocks 210, the lower surface of the baffle 220 and the bottom wall of the box body 110. There is a gap between the baffle 220 and the triangular block 241. When the push box 250 moves away from the drainage chamber 240, the seeds fall through the gap between the drainage chamber 240 and the push box 250.

[0045] The setting of the baffle 220 and the triangular block 241 allows the seeds to slide in a directional manner between the drainage chamber 240 and the push box 250, thereby preventing the seeds from moving to the side of the push box 250 away from the drainage chamber 240, causing the seeds to be unable to be discharged, and the push box 250 from getting stuck during movement. The four side surfaces of the push box 250 are respectively fitted with the two wedge blocks 210, the lower surface of the baffle 220 and the bottom wall of the box body 110, which also prevents the seeds from falling into the push box 250 and causing it to get stuck.

[0046] Among the optional methods of this embodiment, the more preferred ones are:

[0047] The bottom wall of the box body 110 is connected to an arc cylinder 243, the output end of the arc cylinder 243 is connected to the discharge door 242, the swing axis of the discharge door 242 is located at the center of the arc trajectory of the arc cylinder 243, and a position sensor is arranged in the triangular block 241. When the position sensor detects that the push box 250 slides into the drain chamber 240, the arc cylinder 243 maintains an extended state, and when the position sensor detects that the push box 250 slides away from the drain chamber 240, the arc cylinder 243 first shortens and then extends.

[0048] The setting of the arc cylinder 243 drives the discharge door 242 to open and close. When the position sensor detects that the push box 250 slides into the drain chamber 240, the arc cylinder 243 maintains an extended state. At this time, the discharge door 242 is closed, so that the drain chamber 240 is in a closed state, ensuring that the water inside it can only be discharged through the drainage hole of the triangular block 241, and the seeds in the drain chamber 240 will not move out of the drain chamber 240 at this time. When the position sensor detects that the arc cylinder 243 shortens when the push box 250 slides away from the drain chamber 240, the discharge door 242 is opened at this time, so that the drained seeds are discharged. When the push box 250 is away from but not separated from the drain chamber 240, the arc cylinder 243 extends, so that the discharge door 242 is closed, thereby avoiding leakage of water in the water storage chamber 130 when the push box 250 separates from the drain chamber 240.

[0049] Among the optional methods of this embodiment, the more preferred ones are:

[0050] The quality screening mechanism 200 also includes a straight cylinder 230, which is connected to the partition 140. The output end of the straight cylinder 230 is connected to a rectangular block 231, which slides in a push box 250. A rectangular plate 251 is connected to the push box 250. A through hole 252 is provided in the middle of the rectangular plate 251. A first spring 232 is connected between the rectangular plate 251 and the rectangular block 231. The push box 250 has an opening toward the side wall of the box body 110, and an elastic membrane 253 is connected in the opening. After the push box 250 slides into the drain chamber 240, the rectangular block 231 slides into the push box 250 to make the elastic membrane 253 bulge out, so that the elastic membrane 253 further compresses the internal space of the drain chamber 240.

[0051] The extension and retraction of the straight cylinder 230 drives the push box 250. When the straight cylinder 230 is extended and retracted, it drives the rectangular block 231 at its output end to move. The rectangular block 231 drives the push box 250 to move through the first spring 232 and the rectangular plate 251. After the push box 250 moves into the drain chamber 240 to a blocked state, the straight cylinder 230 continues to extend, so that the rectangular block 231 slides into the push box 250. At this time, the pressure in the push box 250 increases, so that the elastic membrane 253 protrudes, further compressing the space in the drain chamber 240 to ensure that the water inside the drain chamber 240 is nearly drained. The elastic membrane 253 is made of a waterproof and elastically deformable material, such as rubber.

[0052] Regarding the structure of the size screening mechanism 100, specifically:

[0053] The size screening mechanism 100 also includes a telescopic rod 160 connected to the inner wall of the drying chamber 120, the end of the telescopic rod 160 is connected to a screen 150, the upper surface of the screen 150 is connected to a U-shaped frame 151, and the partition 140 is provided with a through groove that cooperates with the screen 150 and the U-shaped frame 151, and the opening of the U-shaped frame 151 faces the water storage chamber 130, the screen 150 slides back and forth in the drying chamber 120, and when the screen 150 slides, small-particle seeds fall through the screen 150 and large-particle seeds enter the water storage chamber 130 through the through groove on the partition 140.

[0054] The screen 150 receives the seeds poured into the box 110, the telescopic rod 160 and the through grooves on the partition 140 direct the sliding of the screen 150, and the U-shaped frame 151 blocks the seeds to prevent large seeds from falling through the edge of the screen 150 to the lower part of the drying chamber 120. When the screen 150 moves back and forth, the seeds move on its upper part, so that small seeds fall through the mesh of the screen 150 to the lower part of the drying chamber 120, and the large seeds are driven to the through grooves of the partition 140 as the screen 150 moves and fall into the water storage chamber 130.

[0055] Among the optional methods of this embodiment, the more preferred ones are:

[0056] The size screening mechanism 100 further includes a rotating shaft 170 which rotates symmetrically on both sides of the screen 150 . A swing plate 180 is connected to the rotating shaft 170 . A groove which cooperates with the swing plate 180 is formed on the U-shaped frame 151 .

[0057] The rotating shaft 170 is driven by an external motor. When the rotating shaft 170 rotates, the swing plate 180 fixedly connected to the rotating shaft 170 swings continuously, so that the continuously swinging swing plate 180 drives the screen 150 to move back and forth in the drying chamber 120 through the groove of the U-shaped frame 151 to screen the size of the seeds.

[0058] Regarding the structure of the vibration mechanism 300, specifically:

[0059] The vibration mechanism 300 is arranged in the water storage chamber 130, including a vibration rod 310, the two ends of the vibration rod 310 are respectively connected to the top wall of the box body 110 and the wedge block 210, the vibration rod 310 is connected to a mounting plate 320, a slide plate 330 is slidably connected to the upper part of the mounting plate 320, a second spring 340 is connected between the slide plate 330 and the mounting plate 320, the rotating shaft 170 passes through the partition 140 and extends to the water storage chamber 130, and a protrusion 350 is arranged, and when the rotating shaft 170 rotates, the protrusion 350 repeatedly presses the slide plate 330.

[0060] When the rotating shaft 170 rotates, the protrusion 350 arranged on the rotating shaft 170 continuously presses the slide plate 330, and the slide plate 330 is reset by the drive of the second spring 340, so that the slide plate 330 slides back and forth on the vibration rod 310, causing the vibration rod 310 to vibrate, and the vibration is transmitted to the water in the water storage chamber 130, and then transmitted to the seeds dropped into the water storage chamber 130, so that the bubbles attached to the seeds are detached, thereby improving the accuracy of seed quality screening.

[0061] Regarding the structure of the sowing mechanism 400, specifically:

[0062] The sowing mechanism 400 includes a bracket 410 , which is connected to the box body 110 . A hopper 420 is connected to the bracket 410 , and an opening of the hopper 420 faces a seed discharge port of the drainage chamber 240 .

[0063] The screened seeds are discharged from the seed discharge port formed after the discharge gate 242 swings and fall into the hopper 420 to be collected.

[0064] Among the optional methods of this embodiment, the more preferred ones are:

[0065] The sowing mechanism 400 also includes a top plate 430 and a bottom plate 440, both of which are connected to the bracket 410, and a turntable 450 is rotatably connected between the top plate 430 and the bottom plate 440, and a storage hole 451 is provided on the turntable 450, and a discharge pipe 421 is connected to the bottom of the hopper 420, and the discharge pipe 421 is connected to the top plate 430, and a discharge hole 441 that is non-coaxial with the discharge pipe 421 is provided on the bottom plate 440. When the turntable 450 rotates, seeds enter the storage hole 451 through the discharge pipe 421 and are discharged from the discharge hole 441.

[0066] The turntable 450 is driven to rotate by a motor, and the rotation speed is increased or decreased according to the moving speed of the sowing vehicle. The seeds in the hopper 420 are discharged through the discharge pipe 421. When any storage hole 451 on the turntable 450 is in a coaxial position with the discharge pipe 421, the seeds can fall into the storage hole 451. As the turntable 450 rotates, the storage hole 451 storing the seeds moves to the coaxial position of the discharge hole 441, so that the seeds in the storage hole 451 are discharged and sown on the ground. Since the storage space of the storage hole 451 is fixed, the amount of seeds sown each time is guaranteed to be fixed.

[0067] Among the optional methods of this embodiment, the more preferred ones are:

[0068] The top plate 430 is provided with a pressure stabilizing hole 431 coaxial with the discharge hole 441 .

[0069] The pressure-stabilizing hole 431 is coaxially opened at the upper part of the discharge hole 441 . When the storage hole 451 moves to the position of the discharge hole 441 , the two openings of the storage hole 451 are in a through state, thereby preventing negative pressure from obstructing the discharge of seeds in the storage hole 451 .

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Chinese medicine sowing device for automatic seed screening, comprising a size screening mechanism (100), characterized in that: It also comprises a quality screening mechanism (200), wherein the size screening mechanism (100) comprises a box (110), wherein a partition (140) is arranged inside the box (110), and wherein the partition (140) divides the box (110) into a drying chamber (120) and a water storage chamber (130), and the seeds enter the water storage chamber (130) from the drying chamber (120) and sink; The quality screening mechanism (200) comprises two wedge blocks (210) symmetrically connected to the bottom of the water storage chamber (130), a gap being provided between the two wedge blocks (210), a push box (250) being slidably connected in the gap, a triangular block (241) and a discharge door (242) being respectively connected to the upper and lower parts of the gap, the push box (250), the triangular block (241), the discharge door (242) and the inner wall of the water storage chamber (130) forming a drainage chamber (240), a drainage hole being penetrated through the triangular block (241), and a one-way valve being provided in the drainage hole; The push box (250) can enter or leave the drainage chamber (240) when sliding. When the push box (250) enters the drainage chamber (240), it pushes seeds and water into the drainage chamber (240) simultaneously. The water in the drainage chamber (240) is discharged from the drainage hole to the water storage chamber (130). When the push box (250) leaves the drainage chamber (240) but does not leave the drainage chamber (240), the discharge door (242) swings and resets to form a seed discharge port, so that the seeds after drainage are discharged.

2. The automatic seed screening Chinese medicine sowing device according to claim 1 is characterized in that: The quality screening mechanism (200) further comprises a baffle (220), wherein the baffle (220) is connected to the two wedge blocks (210) and the partition (140), and the push box (250) slides on the lower part of the baffle (220), and the four side surfaces of the push box (250) are respectively in contact with the two wedge blocks (210), the lower surface of the baffle (220) and the bottom wall of the box body (110), and there is a gap between the baffle (220) and the triangular block (241), and when the push box (250) is away from the drainage chamber (240), the seeds fall through the gap between the drainage chamber (240) and the push box (250).

3. The automatic seed screening Chinese medicinal sowing device according to claim 2 is characterized in that: The bottom wall of the box body (110) is connected to an arc cylinder (243), the output end of the arc cylinder (243) is connected to the discharge door (242), the swing axis of the discharge door (242) is located at the center of the arc track of the arc cylinder (243), and a position sensor is arranged in the triangular block (241). When the position sensor detects that the push box (250) slides into the drain chamber (240), the arc cylinder (243) maintains an extended state, and when the position sensor detects that the push box (250) slides in a direction away from the drain chamber (240), the arc cylinder (243) first shortens and then lengthens.

4. The automatic seed screening Chinese medicinal sowing device according to claim 3 is characterized in that: The quality screening mechanism (200) further comprises a straight cylinder (230), the straight cylinder (230) being connected to the partition (140), the output end of the straight cylinder (230) being connected to a rectangular block (231), the rectangular block (231) sliding in the push box (250), the push box (250) being connected to a rectangular plate (251), the middle portion of the rectangular plate (251) being provided with a through hole (252), the rectangular plate (251) and the rectangular block (231) being connected to each other. ), the push box (250) is provided with an opening toward the side wall of the box body (110), an elastic membrane (253) is connected in the opening, and after the push box (250) slides into the drain chamber (240), the rectangular block (231) slides into the push box (250) to make the elastic membrane (253) protrude, so that the elastic membrane (253) further compresses the internal space of the drain chamber (240).

5. The automatic seed screening Chinese medicinal sowing device according to claim 4 is characterized in that: The size screening mechanism (100) further comprises a telescopic rod (160) connected to the inner wall of the drying chamber (120); the end of the telescopic rod (160) is connected to a screen (150); the upper surface of the screen (150) is connected to a U-shaped frame (151); a through slot matching the screen (150) and the U-shaped frame (151) is provided on the partition (140); the opening of the U-shaped frame (151) faces the water storage chamber (130); the screen (150) reciprocates in the drying chamber (120); and when the screen (150) slides, small-particle seeds fall through the screen (150) and large-particle seeds enter the water storage chamber (130) through the through slot on the partition (140).

6. The automatic seed screening Chinese medicinal sowing device according to claim 5, characterized in that: The size screening mechanism (100) further comprises a rotating shaft (170) which rotates symmetrically on both sides of the screen (150); a swing plate (180) is connected to the rotating shaft (170); and a groove which cooperates with the swing plate (180) is formed on the U-shaped frame (151).

7. The automatic seed screening Chinese medicinal sowing device according to claim 6 is characterized in that: The invention also comprises a vibration mechanism (300), wherein the vibration mechanism (300) is arranged in the water storage chamber (130), and comprises a vibration rod (310), wherein two ends of the vibration rod (310) are respectively connected to the top wall of the box body (110) and the wedge block (210), wherein the vibration rod (310) is connected to a mounting plate (320), a sliding plate (330) is slidably connected to the upper part of the mounting plate (320), a second spring (340) is connected between the sliding plate (330) and the mounting plate (320), and the rotating shaft (170) passes through the partition plate (140) and extends to the water storage chamber (130), wherein a protrusion (350) is arranged, and when the rotating shaft (170) rotates, the protrusion (350) repeatedly presses the sliding plate (330).

8. The automatic seed screening Chinese medicinal sowing device according to claim 7 is characterized in that: It also comprises a sowing mechanism (400), the sowing mechanism (400) comprising a bracket (410), the bracket (410) being connected to the box body (110), the bracket (410) being connected to a hopper (420), the opening of the hopper (420) facing the seed discharge port of the drainage chamber (240).

9. The automatic seed screening Chinese medicinal herb sowing device according to claim 8, characterized in that: The sowing mechanism (400) further comprises a top plate (430) and a bottom plate (440), wherein the top plate (430) and the bottom plate (440) are both connected to the bracket (410), a rotating disk (450) is rotatably connected between the top plate (430) and the bottom plate (440), a storage hole (451) is provided on the rotating disk (450), a discharge pipe (421) is connected to the bottom of the hopper (420), the discharge pipe (421) is connected to the top plate (430), a discharge hole (441) which is non-coaxial with the discharge pipe (421) is provided on the bottom plate (440), and when the rotating disk (450) rotates, seeds enter the storage hole (451) through the discharge pipe (421) and are discharged through the discharge hole (441).

10. The automatic seed screening Chinese medicinal sowing device according to claim 9, characterized in that: The top plate (430) is provided with a pressure-stabilizing hole (431) coaxial with the discharge hole (441).

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