Rice seedling raising substrate laying device

Abstract

This invention discloses a substrate laying device for rice seedling raising, relating to the field of rice seedling raising technology. It includes a support frame with a conveyor belt mounted on it and baffles fixed to the surface of the conveyor belt. It also includes a laying component mounted on the support frame, comprising a storage box fixed to the top of the support frame, and a storage box fixed to the top of the support frame and one side of the storage box. The storage box contains a mixing component. The beneficial effects of this invention are: by replacing the soil-filling and watering sections with the laying component, and using straw substrate slurry laid in layers, the straw substrate, after being decomposed, is sterile and egg-free, completely avoiding the risk of soil-borne damping-off pathogens, reducing the incidence of seedling diseases, and increasing the seedling survival rate; the slurry is uniform, with no localized settling, water accumulation, or compaction after laying, ensuring a consistent seed implantation environment and uniform, robust seedling emergence. Simultaneously, the straw substrate leaves no residual clumps and is not easily adhered to the seedling tray walls, significantly reducing cleaning difficulty.

Description

Technical Field

[0001] This invention relates to the field of rice seedling cultivation technology, and in particular to a substrate laying device for rice seedling cultivation. Background Technology

[0002] Rice seedling raising is a crucial step in the entire rice planting process. The uniformity and robustness of the seedlings directly determine the subsequent transplant survival rate, tillering ability, and final yield. High-quality seedling raising requires ensuring uniform substrate distribution, a stable seed implantation environment, and freedom from pests and diseases. Currently, traditional rice seedling raising substrate laying devices generally adopt a step-by-step operation mode of filling the soil section with soil and irrigating the water section with water. The traditional soil section uses natural soil as the substrate, which is prone to carrying pathogens of damping-off and seedling blight, as well as eggs of rice planthoppers and rice stem borers. High temperature and humidity conditions can easily induce pests and diseases, leading to the death of seedlings in large areas and reducing the seedling survival rate. At the same time, the unevenness of soil particles during the filling process makes it difficult to accurately control the thickness of the filling by hand or machine. During subsequent irrigation, water can easily cause local soil settlement, water accumulation or compaction, resulting in poor substrate surface flatness, uneven seed implantation depth, and uneven seedling emergence and growth. In addition, residual soil is easy to adhere to the walls of the seedling trays, which is difficult to clean. Returning waste soil to the field will also damage the soil structure and cause compaction. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or existing substrate laying devices for rice seedling raising, the present invention is proposed.

[0005] Therefore, the problem that this invention aims to solve is that the step-by-step process of filling soil and watering is prone to bacterial compaction, uneven substrate thickness, and residual soil easily adheres to the walls of the seedling trays, making cleaning difficult.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a substrate laying device for rice seedling raising, comprising a support frame, a conveyor belt disposed on the support frame, and baffles fixed on the surface of the conveyor belt, characterized in that: it further comprises,

[0007] The laying assembly, set on the support frame, includes a storage box fixed to the top of the support frame. A storage box is fixed to the top of the support frame and to one side of the storage box. A stirring component is set inside the storage box. A flattening component is set to one side of the storage box. A rotating cylinder is set above the support frame. The rotating cylinder is hollow. A vibration frame is set to one side of the rotating cylinder. The bottom of the vibration frame is hollow.

[0008] In a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the flattening component includes a support frame fixed to the top of the support frame, a support rod inserted into the support frame, a support shaft rotatably connected inside the support rod, a pressure roller fixed to one end of the support shaft, and a first spring fixed to the bottom of the support rod.

[0009] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the support frame is fixed with a positioning rod at the top, a positioning column is rotatably connected inside the positioning rod, a scraper is fixed at one end of the positioning column, a first torsion spring is fixed on the outside of the positioning column, and the other end of the first torsion spring is fixed to the positioning rod.

[0010] In a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the stirring component includes a first motor fixed to the top of the storage tank, and the output shaft of the first motor is fixed with a stirring shaft.

[0011] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, a stabilizing rod is fixed to the top of the support frame, a stabilizing shaft is fixed to one side of the rotating drum, and a second motor is provided at the end of the stabilizing shaft.

[0012] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, wherein: an elastic rod is fixed to one side of the vibrating frame, the bottom end of the elastic rod is fixed to the support frame, a first pulley is fixed to the outside of the output shaft of the second motor, a fixed rod is fixed to the top of the support frame, a rotating column is rotatably connected inside the fixed rod, a second pulley and a turntable are respectively fixed to both ends of the rotating column, the second pulley is connected to the first pulley via a belt, a connecting rod is rotatably connected to one side of the turntable, and the other end of the connecting rod is rotatably connected to the vibrating frame.

[0013] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the laying component further includes an adjusting component, the adjusting component including a baffle located at the bottom of the storage box, a positioning block fixed on one side of the storage box, a positioning shaft fixed on one side of the baffle, and the positioning shaft being rotatably connected to the positioning block.

[0014] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the adjusting component further includes a rotating component, a rotating slide rail is fixed to the outside of the positioning shaft, a connecting shaft is provided inside the rotating slide rail, a rotating column is inserted into the connecting shaft, a spiral groove is provided on the rotating column, a fixed shaft is fixed inside the connecting shaft, the fixed shaft slides in the spiral groove, a stabilizing block is fixed to one side of the storage box, and the rotating column is rotatably connected to the stabilizing block.

[0015] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, the adjusting component further includes a pushing component, the pushing component includes a rotating rod fixed to the end of the rotating column, a push column is provided at the bottom of the rotating rod, a movable sleeve is sleeved at the bottom of the push column, a second spring is fixed at the bottom end of the push column, a connecting rod is fixed on the outside of the movable sleeve, and the other end of the connecting rod is fixed to the support rod.

[0016] As a preferred embodiment of the substrate laying device for rice seedling raising described in this invention, a piston is fixed to the outside of the push column, a fixed sleeve is fixed to one side of the storage box, the piston is movably connected to the fixed sleeve, a ventilation groove is provided at the bottom of the fixed sleeve, a stop block is provided at the bottom of the fixed sleeve, and a ventilation hole is provided on the stop block.

[0017] The beneficial effects of this invention are as follows: by replacing the soil-filling and watering sections with laying components, and by using straw substrate slurry to lay in layers, the straw substrate is sterile and free of eggs after being decomposed, completely avoiding the risk of soil carrying damping-off pathogens, reducing the incidence of seedling diseases, and increasing the seedling survival rate; the slurry is uniform, and there are no problems of local settlement, water accumulation, or compaction after laying, ensuring a consistent seed implantation environment and uniform and robust seedling emergence. At the same time, the straw substrate has no residual clumps and is not easy to adhere to the seedling tray wall, greatly reducing the difficulty of cleaning and improving seedling raising efficiency.

[0018] The adaptive slurry thickness adjustment function can precisely control the standard 2 cm thickness of the bottom slurry and the thinness of the top slurry, adapting to different seedling raising needs and rice varieties; it can automatically compensate for the flatness error of the seedling tray to ensure that the slurry thickness is uniform across the entire tray. This function requires no manual intervention, which reduces labor intensity and avoids uneven seedling emergence caused by thickness deviation, helping to improve the quality and efficiency of large-scale seedling raising, taking into account both practicality and adaptability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a substrate laying device for rice seedling cultivation.

[0021] Figure 2 Cross-sectional view of the storage box for a substrate laying device used in rice seedling cultivation.

[0022] Figure 3 Diagram of the vibration frame and rotary drum transmission structure of a substrate laying device for rice seedling cultivation.

[0023] Figure 4 A structural diagram of the vibrating frame of a substrate laying device for rice seedling cultivation.

[0024] Figure 5 A diagram showing the scraper structure of a substrate laying device for rice seedling cultivation.

[0025] Figure 6 A structural diagram of the pressure rollers and storage frame of a substrate laying device for rice seedling cultivation.

[0026] Figure 7 Structural diagram of the rotating and pushing components of a substrate laying device for rice seedling cultivation.

[0027] Figure 8 Cross-sectional view of the fixing sleeve of the substrate laying device for rice seedling cultivation.

[0028] Figure 9 Substrate laying device for rice seedling raising Figure 8 Enlarged view of the structure at point A in the middle.

[0029] In the diagram: 11. Support frame; 12. Conveyor belt; 13. Baffle strip; 2. Laying assembly; 21. Storage box; 22. Storage box; 23. Mixing component; 24. Flattening component; 25. Rotary drum; 26. Vibrating frame; 241. Support frame; 242. Support rod; 243. Support shaft; 244. Pressure roller; 245. First spring; 246. Positioning rod; 247. Positioning column; 248. Scraper; 249. First torsion spring; 231. First motor; 232. Mixing shaft; 251. Stabilizing rod; 252. Stabilizing shaft; 253. Second motor; 261. Elastic rod; 262. First pulley; 263. Fixing element. 264. Rod; 265. Rotating column; 266. Second pulley; 267. Turntable; 268. Connecting rod; 27. Adjusting component; 271. Baffle; 272. Positioning block; 273. Positioning shaft; 28. Rotating component; 281. Rotating slide rail; 282. Connecting shaft; 283. Rotating column; 283-1. Spiral groove; 284. Fixed shaft; 285. Stabilizing block; 29. ​​Pushing component; 291. Rotating rod; 292. Push column; 293. Movable sleeve; 294. Second spring; 295. Connecting rod; 296. Piston; 297. Fixed sleeve; 297-1. Vent groove; 298. Stop block; 299. Vent hole. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1, referring to Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a substrate laying device for rice seedling raising. The substrate laying device for rice seedling raising includes a support frame 11, on which a conveyor belt 12 is provided. The support frame 11 is used to install the conveyor belt 12. The conveyor belt 12 is used to transport the substrate tray. A baffle 13 is fixed on the surface of the conveyor belt 12. The substrate tray is moved by pushing it through the baffle 13, which can prevent the substrate tray from being unable to move on the top of the conveyor belt 12.

[0034] The laying component 2 is set on the support frame 11 and includes a storage box 21 fixed to the top of the support frame 11. The storage box 21 is used to store empty substrate trays, and the bottom of the storage box 21 is at the height of one substrate tray. The bottom substrate tray is in contact with the conveyor belt 12. When the conveyor belt 12 moves, it will drive the substrate tray to move. At this time, the upper substrate tray will fall down, so that the conveyor belt can continuously transport the substrate tray.

[0035] A storage box 22 is fixed on the top of the support frame 11 and on one side of the storage box 21. The storage box 22 is used to store straw substrate slurry. The storage box 22 is conical and has a feed inlet at the top. A cover plate is provided on the feed inlet. When the substrate tray passes the feed outlet at the bottom of the storage box 22, the straw substrate slurry will fall evenly into the substrate tray, completing the laying of the straw substrate slurry.

[0036] The storage tank 22 is equipped with a stirring component 23, which stirs the straw substrate slurry to prevent the straw substrate slurry from agglomerating and sticking inside the storage tank 22. During the stirring process, the straw substrate slurry can fall more smoothly downwards.

[0037] A flattening component 24 is provided on one side of the storage box 22. The flattening component 24 flattens the straw substrate slurry inside the substrate tray, so that the thickness of the straw substrate slurry is consistent.

[0038] A rotating cylinder 25 is installed above the support frame 11. The rotating cylinder 25 is hollow, and the diameter of the hollow hole is larger than the diameter of the seed. The rotating cylinder 25 is used to store the seeds. When the substrate tray for laying the straw substrate slurry moves to the bottom of the rotating cylinder 25 and the rotating cylinder 25 is rotating, the seeds will be evenly sprinkled on the top of the straw substrate slurry, thus completing the seed laying.

[0039] A vibrating frame 26 is provided on one side of the rotating drum 25. The bottom of the vibrating frame 26 is hollowed out to ensure that the straw substrate slurry is discharged downwards. The vibrating frame 26 is used to store the straw substrate slurry. When the seeds are sown on the top of the substrate tray and move to the bottom of the vibrating frame 26, the vibrating frame 26 will vibrate and spread a thin layer of straw substrate slurry on the seed surface, covering the seeds, thus completing the laying of rice seedlings. The layered laying of straw substrate slurry, with the straw substrate being well-rotted and sterile and free of eggs, completely avoids the risk of soil carrying damping-off pathogens, reduces the incidence of seedling diseases, and improves the seedling survival rate. The slurry is uniform, and there are no problems of local settlement, water accumulation, or compaction after laying, ensuring a consistent seed implantation environment and uniform and robust seedling emergence. At the same time, the straw substrate has no residual clumps and is not easy to adhere to the walls of the seedling tray, greatly reducing the difficulty of cleaning and improving the efficiency of seedling raising.

[0040] Example 2, refer to Figures 2-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0041] Specifically, the flattening component 24 includes a support frame 241 fixed to the top of the support frame 11, a support rod 242 inserted into the support frame 241, and a support shaft 243 rotatably connected inside the support rod 242. The above structures are in two sets, located on both sides of the pressure roller 244 respectively. One end of the support shaft 243 is fixed to the pressure roller 244. The width of the pressure roller 244 is slightly smaller than the width inside the substrate tray, allowing the pressure roller 244 to completely enter the substrate tray. When the substrate tray after the straw substrate slurry has been laid moves under the pressure roller 244, the pressure roller 244 will roll and flatten the straw substrate slurry, eliminating the unevenness of the slurry surface.

[0042] A first spring 245 is fixed to the bottom of the support rod 242. The bottom end of the first spring 245 is fixed to the inner wall of the support frame 241. The first spring 245 is used to provide elastic support for the support rod 242 and the pressure roller 244. The initial height of the pressure roller 244 is lower than the height of the substrate plate because the pressure roller 244 needs to enter the interior of the substrate plate to roll the slurry inside. The height of the slurry is lower than the height of the substrate plate. When the pressure roller 244 contacts the edge of the substrate plate, it will be pushed upward by the reverse force of the edge of the substrate plate. At this time, the height of the pressure roller 244 will be higher than the height of the substrate plate, so that it can enter the interior of the substrate plate or move out of the interior of the substrate plate.

[0043] If there is too much slurry inside the substrate pan, resulting in excessive thickness, the pressure roller 244 will also move upwards accordingly and can detect the height of the slurry.

[0044] A positioning rod 246 is fixed to the top of the support frame 11. A positioning column 247 is rotatably connected inside the positioning rod 246. The positioning rod 246 and the positioning column 247 are both at two heights and are located at both ends of the scraper 248. The scraper 248 is fixed to one end of the positioning column 247. The scraper 248 is used to further level the slurry inside the substrate tray. A first torsion spring 249 is fixed to the outside of the positioning column 247. The other end of the first torsion spring 249 is fixed to the positioning rod 246. The height of the scraper 248 is lower than the height of the substrate tray. When the scraper 248 contacts the edge of the substrate tray, it will rotate due to the reverse thrust of the substrate tray. When the scraper 248 enters the substrate tray, it can rotate back to the vertical position under the torsional force of the first torsion spring 249 and level the slurry inside the substrate tray. Since the slurry is relatively loosely accumulated inside the substrate tray, it cannot counteract the elastic force of the first torsion spring 249, thus making the scraper 248 have sufficient rigidity to level the slurry.

[0045] The stirring component 23 includes a first motor 231 fixed to the top of the storage tank 22. The output shaft of the first motor 231 is fixed with a stirring shaft 232. The first motor 231 is used to drive the stirring shaft 232 to rotate and stir the slurry inside the storage tank 22 through the stirring shaft 232, thereby preventing the slurry from agglomerating and sticking together.

[0046] A stabilizing rod 251 is fixed to the top of the support frame 11, and a stabilizing shaft 252 is fixed to one side of the rotating drum 25. The stabilizing shaft 252 is rotatably connected to the stabilizing rod 251 through a bearing. The two work together to support and position the rotating drum 25. A second motor 253 is provided at the end of the stabilizing shaft 252. The second motor 253 is used to drive the stabilizing shaft 252 and the rotating drum 25 to rotate.

[0047] An elastic rod 261 is fixed on one side of the vibration frame 26. The bottom end of the elastic rod 261 is fixed to the support frame 11. The elastic rod 261 is elastic and there are four of them, located on both sides of the vibration frame 26, to support the vibration frame 26 and enable the vibration frame 26 to vibrate.

[0048] The first pulley 262 is fixed to the outside of the output shaft of the second motor 253. A fixed rod 263 is fixed to the top of the support frame 11. A rotating column 264 is rotatably connected inside the fixed rod 263. The two ends of the rotating column 264 are respectively fixed to the second pulley 265 and the turntable 266. The second pulley 265 is connected to the first pulley 262 through a belt. A connecting rod 267 is rotatably connected to one side of the turntable 266. The connecting rod 267 is located at an eccentric position on the turntable 266. The other end of the connecting rod 267 is rotatably connected to the vibration frame 26.

[0049] When the first pulley 262 rotates, it will drive the second pulley 265 and the rotating column 264 to rotate, causing the rotating column 264 to drive the turntable 266 to rotate. When the turntable 266 rotates, it will pull the vibrating frame 26 through the connecting rod 267 to generate vibration, which will cause the vibrating frame 26 to sprinkle the slurry inside downward.

[0050] Example 3, referring to Figures 6-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0051] Specifically, the laying component 2 also includes an adjusting component 27, which includes a baffle 271 located at the bottom of the storage tank 22. There are two baffles 271, located on both sides of the bottom of the storage tank 22. When the two baffles 271 rotate to the middle position, they will intercept the falling slurry, thereby reducing the amount of slurry falling and preventing the slurry thickness on the substrate plate from being too high. A positioning block 272 is fixed on one side of the storage tank 22, and a positioning shaft 273 is fixed on one side of the baffle 271. The positioning shaft 273 is rotatably connected to the positioning block 272, and the two cooperate to support and position the baffle 271.

[0052] The adjusting component 27 also includes a rotating component 28, the number of which corresponds to the baffle 271. A rotating slide rail 281 is fixed on the outside of the positioning shaft 273. A connecting shaft 282 is provided inside the rotating slide rail 281. A rotating column 283 is inserted into the connecting shaft 282. A spiral groove 283-1 is opened on the rotating column 283. There are two spiral grooves 283-1, and the threads of the two spiral grooves 283-1 are arranged in opposite directions. A fixed shaft 284 is fixed inside the connecting shaft 282. The fixed shaft 284 slides in the spiral groove 283-1. A stabilizing block 285 is fixed on one side of the storage box 22. The rotating column 283 is rotatably connected to the stabilizing block 285.

[0053] When the rotating column 283 rotates, it causes the fixed shaft 284 to slide within the spiral groove 283-1. Through the cooperation of the two, the two connecting shafts 282 move away from each other. The connecting shafts 282 push the rotating slide rail 281 to rotate. At this time, the rotating slide rail 281 drives the positioning shaft 273 and the baffle 271 to rotate, so that the two baffles 271 rotate in the center and block and intercept the falling slurry.

[0054] The adjusting component 27 also includes a pushing component 29, which includes a rotating rod 291 fixed to the end of the rotating column 283. The rotating rod 291 is inclined and a counterweight is fixed at its end. A push column 292 is provided at the bottom of the rotating rod 291. A movable sleeve 293 is sleeved at the bottom of the push column 292. A second spring 294 is fixed at the bottom of the push column 292. A connecting rod 295 is fixed on the outside of the movable sleeve 293. The connecting rod 295 is L-shaped and the other end of the connecting rod 295 is fixed to the support rod 242.

[0055] When the pressure roller 244 moves upward due to the excessive thickness of the slurry, it will drive the connecting rod 295 to move upward through the support rod 242, and the connecting rod 295 will drive the movable sleeve 293 to move upward. The movable sleeve 293 will push the push column 292 to move upward through the second spring 294, and the push column 292 will drive the rotating rod 291 to rotate, thereby enabling the rotating rod 291 to drive the rotating column 283 to rotate.

[0056] A piston 296 is fixed to the outside of the push column 292, and a fixed sleeve 297 is fixed to one side of the storage box 22. The piston 296 is movably connected to the fixed sleeve 297. A vent groove 297-1 is opened at the bottom of the fixed sleeve 297. The diameter of the vent groove 297-1 is relatively large. A stop block 298 is provided at the bottom of the fixed sleeve 297. A vent hole 299 is opened on the stop block 298. The diameter of the vent hole 299 is relatively small.

[0057] The stop block 298 is hinged to the bottom of the fixed sleeve 297 via a hinge seat, and a second torsion spring is provided on the hinge seat to apply an upward elastic force to the stop block 298, so that the stop block 298 can fit tightly against the bottom of the fixed sleeve 297 and block the vent groove 297-1.

[0058] When the movable sleeve 293 pushes the push column 292 upward via the second spring 294, because the stop block 298 blocks the vent groove 297-1, air can only enter the fixed sleeve 297 through the smaller vent hole 299. At this time, the negative pressure between the piston 296 and the inside of the fixed sleeve 297 is large, so the push column 292 generates greater resistance when moving upward. At this time, the movable sleeve 293 will compress the second spring 294, and the second spring 294 will slowly release its elasticity and push the push column 292 upward slowly. If the movable sleeve 293 pushes the push column 292 upward in a short period of time... After the downward movement resets, the elastic force of the second spring 294 will be released downwards and will not be able to push the push column 292 upwards. Therefore, only when the pressure roller 244 detects that the thickness of the slurry is continuously too high and the pressure roller 244 will continue to maintain the upward movement height will the push column 292 push the rotating rod 291 upwards to rotate and reduce the amount of material fed. If the pressure roller 244 only moves upwards briefly because it exceeds the height of the substrate plate or because of the unevenness of the slurry, the amount of material fed will not be reduced, thereby avoiding the situation where the thickness of the laid slurry is inconsistent due to too frequent adjustment of the amount of material fed.

[0059] During use, the conveyor belt 12 moves, causing the substrate tray to move as well. The substrate tray above will fall downwards, allowing the conveyor belt to continuously transport the substrate tray. When the substrate tray passes the bottom discharge port of the storage box 22, the straw substrate slurry will fall evenly into the substrate tray, completing the laying of the straw substrate slurry. After the substrate tray with the laid straw substrate slurry moves to the bottom of the pressure roller 244, the pressure roller 244 will roll and flatten the laid straw substrate slurry, eliminating any unevenness on the surface of the slurry. When the substrate tray moves to the bottom of the scraper 248, the scraper 248 will further flatten the slurry inside the substrate tray.

[0060] When the substrate tray containing the straw substrate slurry moves below the rotating drum 25, and the drum 25 is rotating, the seeds are evenly sprinkled on top of the straw substrate slurry, thus completing the seed laying. When the seeds are sprinkled on top of the substrate tray and move below the vibrating frame 26, the vibrating frame 26 vibrates and spreads a thin layer of straw substrate slurry on the seed surface, covering the seeds, thus completing the laying of rice seedlings. The layered laying of straw substrate slurry ensures that the straw substrate is sterile and free of eggs after decomposition, completely avoiding the risk of soil-borne damping-off pathogens, reducing the incidence of seedling diseases, and improving the seedling survival rate. The slurry is uniform, and there are no local settlement, water accumulation, or compaction problems after laying, ensuring a consistent seed implantation environment and uniform and robust seedling emergence. At the same time, the straw substrate leaves no residual clumps and is not easy to adhere to the seedling tray walls, greatly reducing cleaning difficulty and improving seedling raising efficiency.

[0061] When the pressure roller 244 moves upward due to excessive slurry thickness, it drives the connecting rod 295 upward via the support rod 242. The connecting rod 295 then drives the movable sleeve 293 upward. The movable sleeve 293, via the second spring 294, pushes the push column 292 upward, causing the push column 292 to rotate the rotating rod 291. This allows the rotating rod 291 to rotate the rotating column 283. When the rotating column 283 rotates, the fixed shaft 284 slides within the spiral groove 283-1. This interaction causes the two connecting shafts 282 to move in a distancing direction, pushing the rotating slide rail 282. When the slide rail 281 rotates, it drives the positioning shaft 273 and the baffle 271 to rotate. As a result, the two baffles 271 rotate in the center and block the falling slurry, thereby reducing the amount of slurry falling. The slurry thickness adaptive adjustment function can accurately control the standard thickness of the bottom slurry (2 cm) and the thinness of the top slurry, adapting to different seedling needs and rice varieties. It can automatically compensate for the flatness error of the seedling tray, ensuring that the slurry thickness is uniform across the entire tray. This function does not require manual intervention, which reduces labor intensity and avoids uneven seedling emergence caused by thickness deviation, helping to improve the quality and efficiency of large-scale seedling cultivation, taking into account both practicality and adaptability.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A substrate laying device for rice seedling raising, comprising a support frame (11), wherein a conveyor belt (12) is provided on the support frame (11), and baffles (13) are fixed on the surface of the conveyor belt (12), characterized in that: It also includes, The laying component (2) is set on the support frame (11) and includes a storage box (21) fixed to the top of the support frame (11). A storage box (22) is fixed on the top of the support frame (11) and on one side of the storage box (21). A stirring component (23) is set inside the storage box (22). A flattening component (24) is set on one side of the storage box (22). A rotating cylinder (25) is set above the support frame (11). The rotating cylinder (25) is hollow. A vibration frame (26) is set on one side of the rotating cylinder (25). The bottom of the vibration frame (26) is hollow.

2. The substrate laying device for rice seedling raising as described in claim 1, characterized in that: The flattening component (24) includes a support frame (241) fixed to the top of the support frame (11), a support rod (242) inserted into the support frame (241), a support shaft (243) rotatably connected inside the support rod (242), a pressure roller (244) fixed at one end of the support shaft (243), and a first spring (245) fixed at the bottom of the support rod (242).

3. The substrate laying device for rice seedling raising as described in claim 2, characterized in that: The support frame (11) is fixed with a positioning rod (246) at the top. A positioning column (247) is rotatably connected inside the positioning rod (246). A scraper (248) is fixed at one end of the positioning column (247). A first torsion spring (249) is fixed on the outside of the positioning column (247). The other end of the first torsion spring (249) is fixed to the positioning rod (246).

4. The substrate laying device for rice seedling raising as described in claim 2 or 3, characterized in that: The stirring component (23) includes a first motor (231) fixed to the top of the storage tank (22), and the output shaft of the first motor (231) is fixed with a stirring shaft (232).

5. The substrate laying device for rice seedling raising as described in claim 4, characterized in that: A stabilizing rod (251) is fixed to the top of the support frame (11), a stabilizing shaft (252) is fixed to one side of the rotating drum (25), and a second motor (253) is provided at the end of the stabilizing shaft (252).

6. The substrate laying device for rice seedling raising as described in claim 5, characterized in that: An elastic rod (261) is fixed on one side of the vibration frame (26). The bottom end of the elastic rod (261) is fixed to the support frame (11). A first pulley (262) is fixed on the outside of the output shaft of the second motor (253). A fixed rod (263) is fixed on the top of the support frame (11). A rotating column (264) is rotatably connected inside the fixed rod (263). A second pulley (265) and a turntable (266) are fixed at both ends of the rotating column (264). The second pulley (265) is connected to the first pulley (262) via a belt. A connecting rod (267) is rotatably connected on one side of the turntable (266). The other end of the connecting rod (267) is rotatably connected to the vibration frame (26).

7. The substrate laying device for rice seedling raising as described in claim 5 or 6, characterized in that: The laying assembly (2) also includes an adjusting component (27), which includes a baffle (271) located at the bottom of the storage box (22). A positioning block (272) is fixed on one side of the storage box (22), and a positioning shaft (273) is fixed on one side of the baffle (271). The positioning shaft (273) is rotatably connected to the positioning block (272).

8. The substrate laying device for rice seedling raising as described in claim 7, characterized in that: The adjusting component (27) also includes a rotating component (28). A rotating slide rail (281) is fixed on the outside of the positioning shaft (273). A connecting shaft (282) is provided inside the rotating slide rail (281). A rotating column (283) is inserted into the connecting shaft (282). A spiral groove (283-1) is opened on the rotating column (283). A fixed shaft (284) is fixed inside the connecting shaft (282). The fixed shaft (284) slides in the spiral groove (283-1). A stabilizing block (285) is fixed on one side of the storage box (22). The rotating column (283) is rotatably connected to the stabilizing block (285).

9. The substrate laying device for rice seedling raising as described in claim 8, characterized in that: The adjusting component (27) further includes a pushing component (29), which includes a rotating rod (291) fixed to the end of the rotating column (283). A push column (292) is provided at the bottom of the rotating rod (291). A movable sleeve (293) is sleeved at the bottom of the push column (292). A second spring (294) is fixed at the bottom of the push column (292). A connecting rod (295) is fixed on the outside of the movable sleeve (293). The other end of the connecting rod (295) is fixed to the support rod (242).

10. The substrate laying device for rice seedling raising as described in claim 9, characterized in that: A piston (296) is fixed to the outside of the pusher (292), and a fixing sleeve (297) is fixed to one side of the storage box (22). The piston (296) is movably connected to the fixing sleeve (297). A venting groove (297-1) is provided at the bottom of the fixing sleeve (297), and a stop block (298) is provided at the bottom of the fixing sleeve (297). A venting hole (299) is provided on the stop block (298).

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