Uniform seeding device for seedling cultivation

Abstract

The invention belongs to the field of seedling sowing, and provides a uniform sowing device for seedling cultivation, which comprises a storage box, the storage box is connected with a discharge cylinder, the storage box is communicated with a feed chute, the bottom of the discharge cylinder is communicated with a discharge pipe, and the feed chute and the discharge pipe are both provided with stop valves. A rotating sleeve is rotationally connected to the center position in the storage box, the lower end of the rotating sleeve is communicated, a first driving assembly for driving the rotating sleeve to rotate in a clearance mode is arranged in the discharging barrel, a guide pipe is rotationally connected to the center position of the rotating sleeve, and a second driving assembly for driving the guide pipe to rotate in a reciprocating mode is arranged on the rotating sleeve. According to the device, the rotating sleeve drives all the feeding mechanisms to collect seeds in different height directions, so that the seeds in different areas in the storage box can be planted on the land in the same batch, and the seed cultivation uniformity is improved.

Description

Technical Field

[0001] The invention belongs to the field of seedling sowing, and in particular relates to a uniform sowing device for seedling cultivation. Background Art

[0002] Seedlings refer to seeds that have germinated (usually grow to 2 pairs of true leaves, with full growth as the standard) and are transplanted to other environments to grow into young plants. Seedling cultivation technology involves many aspects, mainly including seed selection, sowing, seedbed and seedling soil preparation, management and other links.

[0003] In the existing uniform seeding device for seedling cultivation, when seeds are discharged from a seeding box for sowing, the seeds near the discharge port in the seeding box are discharged in batches first, and then the seeds in other areas of the seeding box are discharged.

[0004] In the above-mentioned sowing method, since the humidity environment of the seeds placed at different depths in the sowing box may be different (the seeds near the bottom have poor ventilation), there are quality differences in seeds discharged from different batches during sowing, which affects the experimental observation and judgment after sowing; further, during sowing, some shriveled seeds stick to the soil and are mixed with normal plump seeds. After the shriveled seeds are mixed with the normal plump seeds and discharged, it also affects the subsequent experimental observations after seed planting. Summary of the invention

[0005] The purpose of the present invention is to provide a uniform sowing device for seedling cultivation, aiming to solve the technical problem in the prior art that the humidity environment of seeds placed at different depths in a sowing box may be different, resulting in quality differences in seeds discharged from different batches during sowing.

[0006] The present invention is implemented in this way. A uniform sowing device for seedling cultivation comprises a storage box, the storage box is connected with a discharge barrel, the storage box is connected with a feed trough, the bottom of the discharge barrel is connected with a discharge pipe, the feed trough and the discharge pipe are both provided with a stop valve, a rotating sleeve is rotatably connected with the center position of the storage box, the lower end of the rotating sleeve is connected, a No. 1 driving component driving the rotating sleeve to rotate in the gap is provided in the discharge barrel, a guide tube is rotatably connected with the center position of the rotating sleeve, and a No. 2 driving component driving the guide tube to reciprocate is provided on the rotating sleeve;

[0007] The rotating sleeve is connected with a plurality of feeding mechanisms along the length direction, and a transmission assembly is arranged between the feeding mechanism and the conduit. When the conduit rotates back and forth, the transmission assembly can drive the feeding mechanism to rotate back and forth, and the feeding mechanism can quantitatively introduce the seeds in the storage box into the rotating sleeve; the rotating sleeve is provided with a dust removal mechanism, which can perform electric heating drying and dust removal on the seeds, and the conduit is connected with a dust suction mechanism, which can collect dust in the storage box and the rotating sleeve;

[0008] One end of the rotating sleeve is connected to a discharging barrel, and a screening component is arranged in the discharging barrel. The screening component can filter and collect shriveled seeds by gravity, and a stirring rod is connected to the lower end of the conduit.

[0009] Further technical solution: the feeding mechanism includes a feeding pipe, an electric sleeve, a guide hole, a feeding hole and an electric screen;

[0010] The side wall of the rotating sleeve is rotatably connected to multiple feed pipes, each feed pipe is slidably connected to an electric sleeve, the feed pipe is provided with multiple guide holes along the length direction, the electric sleeve is provided with multiple feed holes at intervals, one end of the feed pipe in the rotating sleeve is connected to an electric mesh plate, and the electric mesh plate is rotatably connected to the feed pipe.

[0011] Further technical solution: A pressure sensor is provided on the side of the electric mesh plate facing the inside of the feed pipe, and the pressure sensor and the electric mesh plate are electrically connected to the PLC controller.

[0012] Further technical solution: the transmission assembly includes a toothed disc and a gear, the toothed disc is fixedly connected to the conduit, one end of the feed pipe is fixedly connected to the gear, and the gear is meshed with the toothed disc.

[0013] Further technical solution: the impurity removal mechanism includes a connecting sleeve, an electric heating mesh plate, a spring and a guide seat;

[0014] The connecting sleeve is arranged on the outside of the conduit, and the connecting sleeve is vertically slidably connected to the inner wall of the rotating sleeve. The outer wall of the connecting sleeve is spirally provided with an electric heating mesh plate. A plurality of bosses are provided on the conduit. A spring is provided between the lower end of each electric heating mesh plate and the boss. A plurality of guide seats are vertically fixedly connected to the side wall of the conduit. A plurality of engaging grooves are annularly provided on the upper end of the connecting sleeve, and each guide seat elastically abuts against the upper end of a connecting sleeve.

[0015] Further technical solution: the dust collection mechanism includes a filter box, a No. 1 air hole and an air inlet pipe;

[0016] The filter box is fixedly connected to the upper end surface of the discharge barrel, an air pump is arranged in the filter box, a hose is connected between the air pump and the conduit, a plurality of No. 1 air holes are arranged along the length direction of the conduit, and a plurality of air inlet pipes are arranged along the length direction of the electric sleeve.

[0017] Further technical solution: The screening assembly includes an aggregate sleeve and No. 2 air holes, the conduit is fixedly connected to the aggregate sleeve, the aggregate sleeve is arranged in the discharge barrel, and a plurality of No. 2 air holes are arranged on the conduit, and the No. 2 air holes are arranged on the upper side of the aggregate sleeve.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The rotating sleeve drives all feeding mechanisms to collect seeds at different heights and directions, so that seeds in different areas of the storage box can be planted on the land in the same batch, increasing the uniformity of seed cultivation; when the feeding mechanism collects seeds, the electric sleeve is started to move along the feeding pipe. When the feeding hole is aligned with the guide hole, the seeds in the storage box can enter the feeding pipe. When the seeds in the feeding pipe are filled, the electric sleeve is started to reset along the feeding pipe, thereby preventing the seeds in the storage box from continuing to enter the feeding pipe, thereby realizing quantitative seed extraction from the feeding pipe;

[0020] 2. When the feed hole is aligned with the guide hole, the seeds are easily blocked at the connection between the guide hole and the feed hole when entering the feed pipe. In this embodiment, when the conduit reciprocates, the conduit can drive the feed pipe to reciprocate through the transmission assembly, so that the seeds in the storage box continuously enter the feed pipe under the action of the extrusion force, thereby avoiding blockage at the connection between the guide hole and the feed hole;

[0021] 3. After a batch of seeds are collected, they enter the rotating sleeve. At this time, the impurity removal mechanism can perform electric drying and dust removal on the seeds. Specifically, when the seeds roll along the electric heating mesh plate, the electric heating mesh plate heats the seeds, and the seeds and the mesh surface of the electric heating mesh plate continuously collide and rub, thereby continuously stripping off the dust and impurities on the surface of the seeds. At the same time, the dust suction mechanism absorbs and filters the stripped dust and impurities. In this way, it can be avoided that the dried seeds are attached with more dust and heavier weight, causing screening errors of the screening components;

[0022] 4. When the conduit rotates, the conduit drives the guide seat to continuously push the connecting sleeve. Under the elastic force of the spring, the connecting sleeve drives the electric heating mesh plate to vibrate back and forth vertically, thereby increasing the collision effect between the electric heating mesh plate and the surface of the seed, and increasing the stripping effect of dust and impurities on the surface of the seed. The electric heating drying and dust removal of the electric heating mesh plate can prevent the shriveled seeds from being attached with more dust and heavier weight, causing screening errors of the screening assembly; on the other hand, when the electric heating mesh plate rotates back and forth, under the guiding action of the electric heating mesh plate, the seeds can fall evenly along the wall of the conduit, so that the seeds pass through the entire screening assembly evenly, increasing the screening effect of the screening assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the internal structure of the storage box and the discharge barrel in the present invention.

[0025] Figure 3 It is a schematic diagram of the internal structure of the transfer sleeve in the present invention.

[0026] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle.

[0027] Figure 5 It is a schematic diagram of the structure of the screening assembly in the present invention.

[0028] Figure 6 It is a structural schematic diagram of the feeding mechanism in the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the feed pipe in the present invention.

[0030] In the attached drawings: 1. storage box; 2. discharge barrel; 3. feeding mechanism; 31. feeding pipe; 32. electric sleeve; 33. guide hole; 34. feeding hole; 35. electric screen; 4. transmission assembly; 41. toothed disc; 42. gear; 5. impurity removal mechanism; 51. connecting sleeve; 52. electric heating screen; 53. spring; 54. guide seat; 6. dust suction mechanism; 61. filter box; 62. No. 1 air hole; 63. air inlet pipe; 7. screening assembly; 71. collection sleeve; 72. No. 2 air hole; 8. feeding trough; 9. discharge pipe; 10. rotating sleeve; 11. No. 1 driving assembly; 12. guide tube; 13. No. 2 driving assembly; 14. stirring rod; 15. connecting seat. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0033] like Figure 1-Figure 7 As shown, a uniform sowing device for seedling cultivation provided by the present invention comprises a storage box 1, the storage box 1 is connected with a discharge barrel 2, the storage box 1 is connected with a feed trough 8, the bottom of the discharge barrel 2 is connected with a discharge pipe 9, the feed trough 8 and the discharge pipe 9 are both provided with a stop valve, a rotating sleeve 10 is rotatably connected to the center position of the storage box 1, the lower end of the rotating sleeve 10 is conductive, a No. 1 driving component 11 is provided in the discharge barrel 2 to drive the rotating sleeve 10 to rotate intermittently, a guide tube 12 is rotatably connected to the center position of the rotating sleeve 10, and a No. 2 driving component 13 for driving the guide tube 12 to reciprocate is provided on the rotating sleeve 10;

[0034] The rotating sleeve 10 is connected with a plurality of feeding mechanisms 3 along the length direction, and a transmission assembly 4 is arranged between the feeding mechanism 3 and the conduit 12. When the conduit 12 reciprocates, the transmission assembly 4 can drive the feeding mechanism 3 to reciprocate, and the feeding mechanism 3 can quantitatively introduce the seeds in the storage box 1 into the rotating sleeve 10; the rotating sleeve 10 is provided with a dust removal mechanism 5, and the dust removal mechanism 5 can perform electric heating drying and dust removal on the seeds, and the conduit 12 is connected with a dust collection mechanism 6, and the dust collection mechanism 6 can collect dust in the storage box 1 and the rotating sleeve 10;

[0035] One end of the rotating sleeve 10 is connected to the discharge barrel 2 , and a screening component 7 is provided in the discharge barrel 2 . The screening component 7 can filter and collect shriveled seeds by gravity. The lower end of the conduit 12 is connected to a stirring rod 14 .

[0036] In this embodiment, when sowing, the No. 1 driving component 11 is started. The No. 1 driving component 11 preferably has a motor and a gear 42 transmission pair. The motor drives the rotating sleeve 10 to rotate intermittently through the gear 42 transmission pair. During this process, the dust suction mechanism 6 can collect dust in the storage box 1 and the rotating sleeve 10. Then the rotating sleeve 10 drives all the feeding mechanisms 3 to collect seeds at different heights and directions, so that seeds in different areas of the storage box 1 can be planted on the land in the same batch, thereby increasing the uniformity of seed cultivation;

[0037] After a batch of seeds are collected, they enter the rotating sleeve 10. At this time, the impurity removal mechanism 5 can perform electric heating to dry and remove dust on the seeds. After that, the seeds fall from the guide tube 12 onto the screening component 7. The screening component 7 can filter and collect the shriveled seeds by gravity. The electric heating and dust removal of the impurity removal mechanism 5 can prevent the shriveled seeds from being attached with more dust and becoming heavier, thereby causing screening errors of the screening component 7.

[0038] The second driving component 13 is preferably a motor and a belt transmission pair. The motor drives the conduit 12 to rotate back and forth through the belt transmission pair, and the conduit 12 drives the stirring rod 14 to rotate back and forth. The stirring rod 14 can evenly mix the same batch of seeds, so that the seeds in the storage box 1 can be evenly planted in the soil.

[0039] like Figure 6 As shown, a uniform sowing device for seedling cultivation provided by the present invention is provided, wherein the feeding mechanism 3 comprises a feeding pipe 31, an electric sleeve 32, a guide hole 33, a feeding hole 34 and an electric mesh plate 35;

[0040] The side wall of the rotating sleeve 10 is rotatably connected to multiple feed pipes 31, each feed pipe 31 is slidably connected to an electric sleeve 32, the feed pipe 31 is provided with multiple guide holes 33 along the length direction, and the electric sleeve 32 is provided with multiple feed holes 34 at intervals. One end of the feed pipe 31 in the rotating sleeve 10 is connected to an electric mesh plate 35, and the electric mesh plate 35 is rotatably connected to the feed pipe 31.

[0041] In this embodiment, the electric sleeve 32 is started to move along the feed pipe 31. When the feed hole 34 is aligned with the guide hole 33, the seeds in the storage box 1 can enter the feed pipe 31. When the seeds in the feed pipe 31 are filled, the electric sleeve 32 is started to reset along the feed pipe 31, thereby preventing the seeds in the storage box 1 from continuing to enter the feed pipe 31, thereby achieving quantitative seed extraction from the feed pipe 31.

[0042] When the feed hole 34 is aligned with the guide hole 33, the seeds are easily blocked at the connection between the guide hole 33 and the feed hole 34 during the process of entering the feed pipe 31. In this embodiment, when the conduit 12 is started to rotate reciprocally, the conduit 12 can drive the feed pipe 31 to rotate reciprocally through the transmission assembly 4, so that the seeds in the storage box 1 continuously enter the feed pipe 31 under the action of the extrusion force, thereby avoiding blockage at the connection between the guide hole 33 and the feed hole 34.

[0043] like Figure 7 As shown, a uniform sowing device for seedling cultivation provided by the present invention is provided with a pressure sensor on the side of the electric mesh plate 35 facing the inside of the feed pipe 31, and the pressure sensor and the electric mesh plate 35 are both electrically connected to the PLC controller.

[0044] In this embodiment, when the pressure value of the pressure sensor exceeds the preset pressure threshold, it means that the seeds in the feed pipe 31 are full. At this time, the electric sleeve 32 is started to reset along the feed pipe 31 to prevent the seeds in the storage box 1 from continuing to enter the feed pipe 31. At the same time, the PLC controller controls the electric mesh plate 35 to rotate relative to the feed pipe 31, so that the electric mesh plate 35 releases the seal on the feed pipe 31, and the seeds in the feed pipe 31 enter the conduit 12.

[0045] like Figure 4 As shown, a uniform sowing device for seedling cultivation provided by the present invention is provided, wherein the transmission assembly 4 includes a toothed disc 41 and a gear 42, wherein the toothed disc 41 is fixedly connected to the conduit 12, and one end of the feed pipe 31 is fixedly connected to the gear 42, and the gear 42 is meshed with the toothed disc 41.

[0046] In this embodiment, the guide tube 12 drives the toothed disc 41 to reciprocate, and the toothed disc 41 drives the feed tube 31 to reciprocate by meshing with the gear 42 .

[0047] like Figure 4As shown, a uniform sowing device for seedling cultivation provided by the present invention is provided, wherein the impurity removal mechanism 5 comprises a connecting sleeve 51, an electric heating mesh plate 52, a spring 53 and a guide seat 54;

[0048] The connecting sleeve 51 is sleeved on the outside of the conduit 12, and the connecting sleeve 51 is vertically slidably connected to the inner wall of the rotating sleeve 10. The outer wall of the connecting sleeve 51 is spirally provided with an electric heating mesh plate 52. The conduit 12 is provided with a plurality of bosses. A spring 53 is provided between the lower end of each electric heating mesh plate 52 and the boss. The side wall of the conduit 12 is vertically fixedly connected with a plurality of guide seats 54. The upper end of the connecting sleeve 51 is annularly provided with a plurality of engaging grooves, and each guide seat 54 elastically abuts against the upper end of a connecting sleeve 51.

[0049] In this embodiment, when the seeds roll along the electric heating mesh plate 52, the electric heating mesh plate 52 heats the seeds, and the seeds and the mesh surface of the electric heating mesh plate 52 continuously collide and rub, thereby continuously stripping off dust and impurities on the surface of the seeds, and at the same time, the dust suction mechanism 6 absorbs and filters the stripped dust and impurities, so that the dried seeds can be prevented from being attached with more dust and being heavier, causing screening errors of the screening component 7;

[0050] When the guide tube 12 rotates, the guide tube 12 drives the guide seat 54 to continuously push the connecting sleeve 51. Under the elastic force of the spring 53, the connecting sleeve 51 drives the electric heating mesh plate 52 to reciprocate vertically, thereby increasing the collision effect between the electric heating mesh plate 52 and the seed surface, and increasing the stripping effect of dust and impurities on the seed surface;

[0051] On the other hand, when the electric heating mesh plate 52 rotates back and forth, under the guidance of the electric heating mesh plate 52, the seeds can fall evenly along the walls of the conduit 12, so that the seeds pass through the entire screening component 7 evenly, thereby increasing the screening effect of the screening component 7.

[0052] like Figure 2 and Figure 3 As shown, a uniform sowing device for seedling cultivation provided by the present invention is provided, wherein the dust suction mechanism 6 includes a filter box 61, a first air hole 62 and an air inlet pipe 63;

[0053] The filter box 61 is fixedly connected to the upper end surface of the discharge barrel 2. An air pump is arranged in the filter box 61. A hose is connected between the air pump and the conduit 12. The conduit 12 is provided with a plurality of No. 1 air holes 62 along the length direction. The electric sleeve 32 is provided with a plurality of air inlet pipes 63 along the length direction.

[0054] In this embodiment, the electric sleeve 32 is started to move along the feed pipe 31. When the air inlet pipe 63 is connected to the guide hole 33, the air pump in the filter box 61 is started, and negative pressure suction is generated in the conduit 12 connected to the filter box 61. At the same time, since the air inlet pipe 63 is connected to the guide hole 33, the feed pipe 31 generates negative pressure suction to the storage box 1 through the air inlet pipe 63, so that all dust in the storage box 1, the feed pipe 31 and the conduit 12 can be adsorbed and collected into the filter box 61; this method can absorb the dust in the storage box 1 and the dust in the feed pipe 31 at the same time, so as to avoid the accumulation of dust in the feed pipe 31 and occupying the internal volume of the feed pipe 31, thereby affecting the accuracy of the feed pipe 31 in quantitative seed extraction.

[0055] like Figure 5 As shown, a uniform sowing device for seedling cultivation provided by the present invention, the screening component 7 includes an aggregate sleeve 71 and No. 2 air holes 72, the conduit 12 is fixedly connected with the aggregate sleeve 71, the aggregate sleeve 71 is arranged in the discharge barrel 2, and a plurality of No. 2 air holes 72 are arranged on the conduit 12, and the No. 2 air holes 72 are arranged on the upper side of the aggregate sleeve 71.

[0056] In this embodiment, when the seeds fall into the discharge barrel 2 along the conduit 12, the seeds pass through the No. 2 air holes 72, and the shriveled seeds fall onto the platform on the upper part of the aggregate sleeve 71 under the action of air flow suction, or the shriveled seeds fall on the inclined surface of the aggregate sleeve 71 and slide downward for collection, while the full normal seeds bounce back and fall into the discharge barrel 2 to be discharged after hitting the surface of the aggregate sleeve 71.

[0057] Working principle:

[0058] When sowing, the first drive component 11 is started, and the first drive component 11 drives the rotating sleeve 10 to rotate intermittently. During this process, the rotating sleeve 10 drives all the feeding mechanisms 3 to collect seeds at different heights and directions, so that seeds in different areas of the storage box 1 can be planted on the land in the same batch, thereby increasing the uniformity of seed cultivation;

[0059] When the feeding mechanism 3 collects the seeds, the electric sleeve 32 is started to move along the feeding pipe 31. When the feeding hole 34 is aligned with the guide hole 33, the seeds in the storage box 1 can enter the feeding pipe 31. When the seeds in the feeding pipe 31 are filled, the electric sleeve 32 is started to reset along the feeding pipe 31, thereby preventing the seeds in the storage box 1 from continuing to enter the feeding pipe 31, thereby realizing quantitative seed extraction from the feeding pipe 31.

[0060] When the feed hole 34 is aligned with the guide hole 33, the seeds are easily blocked at the connection between the guide hole 33 and the feed hole 34 when entering the feed pipe 31. In this embodiment, when the conduit 12 reciprocates, the conduit 12 can drive the feed pipe 31 to reciprocate through the transmission assembly 4, so that the seeds in the storage box 1 continuously enter the feed pipe 31 under the action of the extrusion force, thereby avoiding the blockage of the connection between the guide hole 33 and the feed hole 34.

[0061] After a batch of seeds are collected, they enter the rotating sleeve 10. At this time, the impurity removal mechanism 5 can perform electric drying and dust removal on the seeds. Specifically, when the seeds roll along the electric heating mesh plate 52, the electric heating mesh plate 52 heats the seeds, and the seeds and the mesh surface of the electric heating mesh plate 52 continuously collide and rub, thereby continuously stripping off the dust and impurities on the surface of the seeds. At the same time, the dust suction mechanism 6 absorbs and filters the stripped dust and impurities. In this way, it can be avoided that the dried seeds are attached with more dust and heavier weight, causing screening errors of the screening component 7;

[0062] When the guide tube 12 rotates, the guide seat 54 is driven by the guide tube 12 to continuously push the connecting sleeve 51. Under the elastic force of the spring 53, the connecting sleeve 51 drives the electric heating mesh plate 52 to vibrate back and forth vertically, thereby increasing the collision effect between the electric heating mesh plate 52 and the surface of the seed, and increasing the stripping effect of dust and impurities on the surface of the seed. The electric heating drying and dust removal of the electric heating mesh plate 52 can prevent the dried seeds from being attached with more dust and heavier in weight, causing screening errors of the screening component 7. On the other hand, when the electric heating mesh plate 52 reciprocates, under the guiding effect of the electric heating mesh plate 52, the seeds can fall evenly around the wall of the guide tube 12, so that the seeds pass through the entire screening component 7 evenly, increasing the screening effect of the screening component 7.

[0063] Specifically, when the seeds fall into the discharge barrel 2 along the guide tube 12, the shrunken seeds fall onto the platform on the upper part of the collection sleeve 71 under the action of air suction through the second air hole 72, or the shrunken seeds fall onto the inclined surface of the collection sleeve 71 and slide downward to be collected, while the full normal seeds bounce back after hitting the surface of the collection sleeve 71 and fall into the discharge barrel 2 to be discharged;

[0064] In the discharge barrel 2, the second drive assembly 13 drives the conduit 12 to rotate reciprocally, and the conduit 12 drives the stirring rod 14 to rotate reciprocally. The stirring rod 14 can evenly mix the same batch of seeds, so that the seeds in the storage box 1 can be evenly planted in the soil.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 present invention.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A uniform sowing device for seedling cultivation, comprising a storage box (1), wherein the storage box (1) is connected to a discharge cylinder (2), characterized in that: A rotating sleeve (10) is rotatably connected to the center position of the storage box (1), the lower end of the rotating sleeve (10) is conductive, a first driving component (11) is provided in the discharge cylinder (2) for driving the rotating sleeve (10) to rotate in a gap, a guide tube (12) is rotatably connected to the center position of the rotating sleeve (10), and a second driving component (13) is provided on the rotating sleeve (10) for driving the guide tube (12) to reciprocate; The rotating sleeve (10) is connected to a plurality of feeding mechanisms (3) along the length direction; a transmission assembly (4) is arranged between the feeding mechanism (3) and the conduit (12); when the conduit (12) reciprocates, the transmission assembly (4) can drive the feeding mechanism (3) to reciprocate; the feeding mechanism (3) can quantitatively introduce the seeds in the storage box (1) into the rotating sleeve (10); a dust removal mechanism (5) is arranged in the rotating sleeve (10); the dust removal mechanism (5) can perform electric drying and dust removal on the seeds; the conduit (12) is connected to a dust collection mechanism (6); the dust collection mechanism (6) can collect dust in the storage box (1) and the rotating sleeve (10); One end of the rotating sleeve (10) is connected to the discharge barrel (2), and a screening component (7) is arranged in the discharge barrel (2). The screening component (7) can filter and collect shriveled seeds by gravity. The lower end of the conduit (12) is connected to a stirring rod (14).

2. The uniform sowing device for seedling cultivation according to claim 1, characterized in that: The feeding mechanism (3) comprises a feeding pipe (31), an electric sleeve (32), a guide hole (33), a feeding hole (34) and an electric mesh plate (35); A plurality of feed pipes (31) are rotatably connected to the side wall of the rotating sleeve (10), each feed pipe (31) is slidably connected to an electric sleeve (32), a plurality of guide holes (33) are provided along the length direction of the feed pipe (31), a plurality of feed holes (34) are arranged at intervals on the electric sleeve (32), one end of the feed pipe (31) inside the rotating sleeve (10) is connected to an electric mesh plate (35), and the electric mesh plate (35) is rotatably connected to the feed pipe (31).

3. The uniform sowing device for seedling cultivation according to claim 2, characterized in that: A pressure sensor is provided on one side of the electric mesh plate (35) facing the inside of the feed pipe (31), and the pressure sensor and the electric mesh plate (35) are both electrically connected to the PLC controller.

4. The uniform sowing device for seedling cultivation according to claim 2, characterized in that: The transmission assembly (4) comprises a toothed disc (41) and a gear (42); the toothed disc (41) is fixedly connected to the conduit (12); one end of the feed pipe (31) is fixedly connected to the gear (42); the gear (42) is meshed with the toothed disc (41).

5. The uniform sowing device for seedling cultivation according to claim 1, characterized in that: The impurity removal mechanism (5) comprises a connecting sleeve (51), an electric heating mesh plate (52), a spring (53) and a guide seat (54); The connecting sleeve (51) is sleeved on the outside of the conduit (12), and the connecting sleeve (51) is vertically slidably connected to the inner wall of the rotating sleeve (10); the outer wall of the connecting sleeve (51) is spirally provided with an electric heating mesh plate (52); a plurality of bosses are provided on the conduit (12); a spring (53) is provided between the lower end of each electric heating mesh plate (52) and the boss; a plurality of guide seats (54) are vertically fixedly connected to the side wall of the conduit (12); a plurality of meshing grooves are annularly provided on the upper end of the connecting sleeve (51); each guide seat (54) elastically abuts against the upper end of a connecting sleeve (51).

6. The uniform sowing device for seedling cultivation according to claim 2, characterized in that: The dust collecting mechanism (6) comprises a filter box (61), a first air hole (62) and an air inlet pipe (63); The filter box (61) is fixedly connected to the upper end surface of the discharge barrel (2), an air pump is arranged in the filter box (61), a hose is connected between the air pump and the conduit (12), a plurality of No. 1 air holes (62) are arranged along the length direction of the conduit (12), and a plurality of air inlet pipes (63) are arranged along the length direction of the electric sleeve (32).

7. The uniform sowing device for seedling cultivation according to claim 1, characterized in that: The screening assembly (7) comprises a material collecting sleeve (71) and No. 2 air holes (72); the conduit (12) is fixedly connected to the material collecting sleeve (71); the material collecting sleeve (71) is arranged in the discharge barrel (2); the conduit (12) is provided with a plurality of No. 2 air holes (72); the No. 2 air holes (72) are arranged on the upper side of the material collecting sleeve (71).

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