Rice seedling raising cultivation frame

Abstract

The present application relates to the technical field of seedling raising equipment, and discloses a cultivation frame for rice seedling raising, which comprises a base, the top surface of the base is fixedly connected with a cultivation frame, the lower ends of the left and right side walls of the cultivation frame are both provided with a lower shaft through horizontal penetration of bearings, the inner end of the lower shaft is coaxially fixedly connected with a driving sprocket, the upper ends of the left and right side walls of the cultivation frame are both provided with an upper shaft through horizontal penetration of bearings, and the inner end of the upper shaft is coaxially fixedly connected with a driven sprocket. The cultivation frame for rice seedling raising can drive the seedling tray to continuously and cyclically lift and change positions. The design of dynamic position change of the seedling tray solves the problems of insufficient light for the lower seedlings and uneven overall ventilation of the traditional frame body, so that all rice seedlings can uniformly receive light and air circulation, reduces the breeding of pathogenic bacteria due to environmental dampness, significantly improves the uniformity of seedling growth and the survival rate of seedling raising, and fully utilizes the vertical space to further improve the utilization rate of the site.

Description

Technical Field

[0001] This invention relates to the field of seedling equipment technology, specifically a cultivation rack for rice seedling cultivation. Background Technology

[0002] Rice is a major food crop in my country, and seedling cultivation is a crucial preliminary step in rice planting and production. Currently, the industry generally uses tiered cultivation racks to cultivate seedlings, making full use of vertical space and expanding the cultivation area within a limited land area. This significantly improves the comprehensive utilization rate of land resources and site space, and lays a good foundation for intensive and standardized rice seedling production. However, existing cultivation racks still have certain shortcomings, such as: The application CN202422023736.2, entitled "A Seedling Raising Device for Rice Cultivation", is a multi-layered frame with a fixed structure. The seedling trays are in a fixed position for a long time, and the seedlings in the upper layer can easily block the lower layer, resulting in poor ventilation and uneven light distribution. This not only leads to insufficient light and poor ventilation for the rice seedlings in the lower layer, affecting their normal photosynthesis and respiration, but also makes them prone to the growth of bacteria due to poor local air circulation and high humidity, thus reducing the survival rate of seedlings and the overall growth of seedlings. In view of this, in order to address the above problems, we conducted in-depth research and proposed a cultivation rack for rice seedlings. Summary of the Invention

[0003] The purpose of this invention is to provide a rice seedling cultivation rack to solve the problems mentioned in the background art, which are caused by the fixed stacked structure of existing cultivation racks and the inability to dynamically adjust the position of the seedling trays, resulting in poor ventilation and uneven light distribution.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rice seedling cultivation rack, including a base; A cultivation rack is fixedly connected to the top surface of the base, and a lower shaft is horizontally connected to the lower ends of the left and right side walls of the cultivation rack through bearings. A drive sprocket is coaxially fixedly connected to the inner end of the lower shaft. An upper shaft is horizontally connected to the upper ends of the left and right side walls of the cultivation rack through bearings. A driven sprocket is coaxially fixedly connected to the inner end of the upper shaft. A chain is connected between the driven sprocket and the drive sprocket. Mounting shafts are evenly installed on the inner side of the chain. A collar is rotatably sleeved on the surface of the mounting shaft. A mounting frame is fixedly connected to the surface of the collar. A seedling tray is fixedly connected to the bottom end of the mounting frame. The cultivation rack is equipped with a drive mechanism for rotating the lower shaft, and a liquid delivery mechanism for applying fertilizer and water to the seedling tray is installed on the cultivation rack. The liquid delivery mechanism is connected to the material cylinder. The drive mechanism is connected to a one-way rotation mechanism, and the one-way rotation mechanism is connected to the liquid delivery mechanism through a transmission mechanism. The material cylinder is equipped with a stirring mechanism for stirring the liquid.

[0005] The above technical solution facilitates the cyclic lifting and rotation of the seedling tray via a sprocket and chain drive structure. Combined with the rotation of the collar and mounting shaft, this ensures the seedling tray remains horizontal, preventing tilting and spillage. Simultaneously, it enables cyclical switching of multiple seedling positions, allowing rice seedlings in different locations to receive even sunlight and ventilation, significantly improving the overall uniformity of seedling growth and increasing the utilization rate of seedling space. Furthermore, it integrates water and fertilizer delivery and material mixing functions, achieving integrated operation of uniform sunlight and ventilation, as well as water and fertilizer irrigation, thus enhancing the automation and efficiency of rice seedling cultivation.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes a rotating rod disposed below the lower shaft. The rotating rod passes through the left and right side walls of the cultivation rack via bearings. A drive gear is symmetrically fixedly mounted on the surface of the rotating rod, and the drive gear meshes with a driven gear fixedly mounted on the surface of the lower shaft. A housing is disposed on the outer side of the drive gear and the driven gear, and the housing is fixedly mounted on the outer side of the cultivation rack. The rotating rod passes through the side wall of the cultivation rack via bearings.

[0007] The above technical solution facilitates stable rotation of the lower shaft and the drive sprocket through gear meshing transmission. The housing can protect the gear transmission structure, effectively blocking dust and moisture erosion during the seedling process, preventing gear corrosion and jamming, extending the service life of the drive structure, and ensuring the stability of the seedling tray circulation.

[0008] As a preferred embodiment of the present invention, a motor is fixedly installed on the left end of the top surface of the base, and the shaft end of the motor is connected to the left end of the rotating rod by a key.

[0009] By adopting the above technical solution, it is easy to provide a stable power source for the entire equipment through the motor, so as to drive the rotating rod to rotate reliably.

[0010] As a preferred embodiment of the present invention, the infusion mechanism includes a support plate fixedly installed on the right side of the cultivation rack, and a cylinder fixedly installed on the top surface of the support plate. A piston adapted to the cylinder is provided inside the cylinder, and a sliding rod is fixedly connected to the bottom surface of the piston. The sliding rod slides vertically through the bottom of the cylinder and the support plate in sequence. Both the upper and lower ends of the right side wall of the cylinder are fixedly connected to inlet pipes, and the right side of the inlet pipe is fixedly connected to a suction pipe. The suction pipe is fixedly connected to the lower end of the left side wall of the material cylinder, and the material cylinder is fixedly installed on the top surface of the base.

[0011] The above technical solution facilitates the automatic extraction of water and fertilizer liquid from inside the cylinder by driving the piston to slide back and forth within the cylinder via the slide rod, in conjunction with the liquid extraction pipe and the liquid inlet pipe.

[0012] As a preferred technical solution of the present invention, the infusion mechanism further includes an outlet pipe fixedly connected to the upper and lower ends of the left side wall of the cylinder, and a connecting pipe fixedly connected to the left end of the outlet pipe. A through pipe is fixedly connected to the top end of the connecting pipe, and the through pipe is horizontally fixedly connected to the left and right side walls of the cultivation rack. The through pipe has a U-shaped structure, and nozzles are evenly installed at the bottom of the through pipe. The nozzles are located above the seedling tray.

[0013] The above technical solution facilitates the delivery of the extracted liquid to the pipe, where it is sprayed downwards through evenly distributed nozzles.

[0014] As a preferred embodiment of the present invention, both the inlet pipe and the outlet pipe are equipped with one-way valves.

[0015] By adopting the above technical solution, it is easy to control the flow direction of the liquid in one direction, effectively prevent the liquid inside the cylinder from flowing back and backflowing, and ensure that the unidirectional circulation operation of liquid suction and discharge is completed when the piston reciprocates, thus avoiding liquid backflow causing infusion disorder.

[0016] As a preferred embodiment of the present invention, the unidirectional rotation mechanism includes a hollow tube sleeved on the outside of the rotating rod, and the right end face of the hollow tube is connected to the inside of the right side housing through a bearing. The axis of the hollow tube is collinear with the axis of the rotating rod, and a ratchet is fixedly installed on the surface of the rotating rod. The ratchet is located inside the hollow tube, and the hollow tube engages with a pawl installed on the inner wall of the hollow tube by a torsion spring.

[0017] The above technical solution facilitates the unidirectional transmission function through ratchet and pawl cooperation, enabling the rotating rod to drive the hollow tube to rotate in one direction.

[0018] As a preferred embodiment of the present invention, the transmission mechanism includes a bevel gear set fixedly installed on the outer wall of the hollow tube, and the bevel gear set is fixedly connected to the bottom end of the reciprocating lead screw. The reciprocating lead screw passes through the top of the right side housing through a bearing, and the top surface of the reciprocating lead screw is connected to the bottom surface of the support plate through a bearing. A movable plate adapted to the reciprocating lead screw is sleeved on the outer side, and the top surface of the movable plate is fixedly connected to the bottom end of the slide rod. The rotation of the reciprocating lead screw is used for the reciprocating linear movement of the movable plate.

[0019] By adopting the above technical solution, it is convenient to change the transmission direction through the bevel gear set, so as to transmit the rotational power of the hollow tube to the reciprocating screw. The characteristics of the reciprocating screw are used to drive the moving plate and the slide rod to make vertical reciprocating motion, providing stable mechanical power for the piston to suck and discharge liquid.

[0020] As a preferred embodiment of the present invention, the stirring mechanism includes a stirring rod that extends vertically through the center of the top of the material cylinder via a bearing, and stirring blades are uniformly installed on the surface of the stirring rod, with the stirring blades located inside the material cylinder.

[0021] By adopting the above technical solution, the stirring blades can be driven by the stirring rod to rotate and stir inside the material cylinder, which can fully stir the mixture of water, fertilizer, nutrient solution, and pesticides, avoid fertilizer sedimentation and material layering, ensure uniform material concentration, prevent uneven fertilization, seedling burn or nutrient deficiency during irrigation, and ensure the quality of rice seedling cultivation.

[0022] As a preferred embodiment of the present invention, the top end of the stirring rod is connected to a reciprocating lead screw via a synchronous belt drive.

[0023] The above technical solution facilitates the synchronous operation of the reciprocating screw and the stirring rod through synchronous belt drive.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the rice seedling cultivation frame can drive the seedling trays to continuously circulate, rise and fall, and change positions. The dynamic repositioning design of the seedling trays solves the problems of insufficient light for the seedlings in the lower layer of the traditional frame and uneven overall ventilation, allowing all rice seedlings to receive light and air circulation evenly, reducing the situation of bacteria breeding due to a stuffy and humid environment, significantly improving the uniformity of seedling growth and seedling survival rate, and making full use of vertical space to further improve the site utilization rate. 1. The sprocket and chain drive structure can drive the seedling trays to circulate and move up and down, and dynamically switch positions, effectively solving the problems of the upper layer blocking the lower layer, uneven light distribution, and poor ventilation in traditional fixed stacked cultivation racks; at the same time, the rotation of the collar and the installation shaft keeps the seedling trays level, preventing the trays from tilting and the substrate from spilling, so that all rice seedlings can receive light and ventilation evenly, reduce the growth of pathogens, and effectively improve the overall growth of seedlings and the survival rate of seedlings; 2. The equipment uses gear meshing to transmit power, and the gear assembly is sealed and protected by the shell, which can block the corrosion of field dust and water vapor, prevent gear corrosion and sluggish operation, extend the service life of transmission components, and ensure the long-term stable operation of the seedling trays. At the same time, the electric motor is used as a unified power source, so the power output is stable and the overall operation of the equipment is continuous. 3. The infusion mechanism relies on mechanical linkage to complete the extraction, transportation and spraying of liquid. The liquid is finally sprayed throughout the entire area through the nozzles evenly arranged below the U-shaped pipe, which can achieve uniform water and fertilizer irrigation for the seedling trays. There is no need for manual watering one by one, which greatly reduces the intensity of manual labor and improves the efficiency of seedling operation. 4. With the help of a one-way rotation mechanism composed of ratchet and pawl, the power is transmitted in one direction. When the motor rotates forward, it only drives the seedling tray to circulate and the water and fertilizer system does not work. When the motor rotates in reverse, the water and fertilizer delivery process is started simultaneously. The two functional modes can be switched independently without interfering with each other. The irrigation operation can be flexibly started and stopped according to the actual needs of seedling cultivation, making the equipment more controllable. 5. The material cylinder is equipped with a stirring rod and stirring blades, which are linked to the reciprocating screw via a synchronous belt. During the water and fertilizer transportation process, the material liquid is continuously stirred synchronously, which effectively avoids fertilizer sedimentation and nutrient solution stratification, ensures that the concentration of the irrigation material is always consistent, prevents problems such as local nutrient deficiency and excessive fertilizer burning of seedlings, and stabilizes the rice seedling cultivation effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional connection structure between the cultivation rack and the shell of the present invention; Figure 3 This is a schematic diagram of the connection structure between the chain, the driving sprocket, and the driven sprocket of the present invention; Figure 4 This is a schematic diagram of the connection structure between the mounting shaft, chain, and collar of the present invention; Figure 5 This is a schematic diagram of the cross-sectional connection structure between the support plate and the cylinder of the present invention; Figure 6 This is a schematic diagram of the ratchet and pawl connection structure of the present invention; Figure 7 This is a schematic diagram of the connection structure between the hollow tube and the bevel gear set in this invention; Figure 8 This is a schematic diagram of the connection structure between the synchronous belt drive device, the reciprocating lead screw, and the stirring rod of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the material cylinder of the present invention.

[0026] In the diagram: 1. Base; 2. Cultivation rack; 3. Lower shaft; 4. Drive sprocket; 5. Upper shaft; 6. Driven sprocket; 7. Chain; 8. Mounting shaft; 9. Collar; 10. Mounting frame; 11. Seedling tray; 12. Rotating rod; 13. Drive gear; 14. Driven gear; 15. Housing; 16. Motor; 17. Support plate; 18. Cylinder; 19. Piston; 20. Sliding rod; 21. Inlet pipe; 22. Draw pipe; 23. Material cylinder; 24. Outlet pipe; 25. Connecting pipe; 26. Through pipe; 27. Nozzle; 28. Hollow tube; 29. ​​Ratchet; 30. Pad; 31. Bevel gear set; 32. Reciprocating screw; 33. Moving plate; 34. Stirring rod; 35. Stirring blade; 36. Synchronous belt drive device. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1 Please see Figure 1 - Figure 9 The technical solution of the present invention is as follows: a rice seedling cultivation rack, including a base 1, a PLC controller for controlling various electrical devices on the base 1, a cultivation rack 2 fixedly connected to the top surface of the base 1, and a lower shaft 3 is horizontally connected through bearings at the lower ends of the left and right side walls of the cultivation rack 2, and a drive sprocket 4 is coaxially fixedly connected to the inner end of the lower shaft 3. An upper shaft 5 is horizontally connected through bearings at the upper ends of the left and right side walls of the cultivation rack 2, and a driven sprocket 6 is coaxially fixedly connected to the inner end of the upper shaft 5. A chain 7 is connected between the driven sprocket 6 and the drive sprocket 4. Mounting shafts 8 are evenly installed on the inner side of the chain 7, and a collar 9 is rotatably sleeved on the surface of the mounting shaft 8. A mounting frame 10 is fixedly connected to the surface of the collar 9, and a seedling tray 11 is fixedly connected to the bottom end of the mounting frame 10. The cultivation rack 2 is equipped with a drive mechanism for rotating the lower shaft 3. The cultivation rack 2 is also equipped with a liquid delivery mechanism for applying fertilizer water to the seedling tray 11. The liquid delivery mechanism is connected to the material cylinder 23. The top surface of the material cylinder 23 is fixedly connected to a feeding port. The lower end of the right side wall of the material cylinder 23 is fixedly connected to a discharge pipe with a valve. The drive mechanism is connected to a one-way rotation mechanism, which is connected to the liquid delivery mechanism through a transmission mechanism. The material cylinder 23 is equipped with a stirring mechanism for stirring the liquid.

[0029] The drive mechanism includes a rotating rod 12 located below the lower shaft 3. The rotating rod 12 passes through the left and right side walls of the cultivation rack 2 via bearings. A drive gear 13 is symmetrically fixedly mounted on the surface of the rotating rod 12. The drive gear 13 meshes with a driven gear 14 fixedly mounted on the surface of the lower shaft 3. A housing 15 is provided on the outer side of the drive gear 13 and the driven gear 14. The housing 15 is fixedly mounted on the outer side of the cultivation rack 2. The rotating rod 12 passes through the side wall of the cultivation rack 2 via bearings. A motor 16 is fixedly mounted on the left end of the top surface of the base 1. The shaft end of the motor 16 is connected to the left end of the rotating rod 12 via a key.

[0030] The infusion mechanism includes a support plate 17 fixedly installed on the right side of the cultivation rack 2, and a cylinder 18 fixedly installed on the top surface of the support plate 17. A piston 19 adapted to the cylinder 18 is installed inside the cylinder 18, and a sliding rod 20 is fixedly connected to the bottom surface of the piston 19. The sliding rod 20 slides vertically through the bottom of the cylinder 18 and the support plate 17. Inlet pipes 21 are fixedly connected to both the upper and lower ends of the right side wall of the cylinder 18, and a suction pipe 22 is fixedly connected to the right side of the inlet pipe 21. The suction pipe 22 is fixedly connected to the lower end of the left side wall of the material cylinder 23. The material cylinder 23 is fixedly installed on the top surface of the base 1. The infusion mechanism also includes an outlet pipe 24 fixedly connected to the upper and lower ends of the left side wall of the cylinder 18. The left end of the outlet pipe 24 is fixedly connected to a connecting pipe 25. The top end of the connecting pipe 25 is fixedly connected to a through pipe 26. The through pipe 26 is horizontally fixedly connected to the left and right side walls of the cultivation rack 2. The through pipe 26 has a U-shaped structure. The bottom of the through pipe 26 is evenly equipped with nozzles 27. The nozzles 27 are located above the seedling tray 11. One-way valves are provided on both the inlet pipe 21 and the outlet pipe 24.

[0031] The one-way rotation mechanism includes a hollow tube 28 sleeved on the outside of the rotating rod 12, and the right end face of the hollow tube 28 is connected to the inside of the right side housing 15 by a bearing. The axis of the hollow tube 28 is collinear with the axis of the rotating rod 12, and a ratchet 29 is fixedly installed on the surface of the rotating rod 12. The ratchet 29 is located inside the hollow tube 28, and the hollow tube 28 is engaged with a pawl 30 installed on the inner wall of the hollow tube 28 by a torsion spring.

[0032] The transmission mechanism includes a bevel gear set 31 fixedly installed on the outer wall of the hollow tube 28, and the bevel gear set 31 is fixedly connected to the bottom end of the reciprocating screw 32. The reciprocating screw 32 passes through the top of the right housing 15 through a bearing, and the top surface of the reciprocating screw 32 is connected to the bottom surface of the support plate 17 through a bearing. A movable plate 33 adapted to the reciprocating screw 32 is sleeved on the outside of the reciprocating screw 32, and the top surface of the movable plate 33 is fixedly connected to the bottom end of the slide rod 20. The rotation of the reciprocating screw 32 is used for the reciprocating linear movement of the movable plate 33.

[0033] The stirring mechanism includes a stirring rod 34 that runs vertically through the center of the top of the material cylinder 23 via a bearing, and stirring blades 35 are evenly installed on the surface of the stirring rod 34. The stirring blades 35 are located inside the material cylinder 23, and the top of the stirring rod 34 is connected to the reciprocating screw 32 via a synchronous belt drive device 36.

[0034] Working principle: When working, the motor 16 at the left end of the top surface of the base 1 is started. The motor 16 drives the rotating rod 12 to rotate in the forward direction. The driving gear 13, which is symmetrically fixed on the surface of the rotating rod 12, rotates accordingly and meshes with the driven gear 14 on the lower shaft 3 to rotate. The driven gear 14 drives the lower shaft 3 to rotate synchronously. The driving sprocket 4 at the inner end of the lower shaft 3 rotates together with it. It works with the driven sprocket 6 at the inner end of the upper shaft 5 to drive the chain 7 to perform a cyclic rotation.

[0035] The mounting shafts 8, evenly distributed on the inner side of the chain 7, move synchronously with the chain 7. The movable collar 9 on the outside of the mounting shaft 8 can rotate freely, so that the mounting frame 10 on the outside of the collar 9 and the seedling tray 11 connected at the bottom always remain horizontal and stable. The seedling tray 11 follows the chain 7 to rise and fall in cycles and change positions continuously, so that the rice seedlings in the tray can receive light and circulate air evenly, effectively improving the drawbacks of uneven light distribution and poor ventilation of the fixed-placement cultivation rack 2.

[0036] During the forward rotation of the rotating rod 12, the ratchet 29 fixed on the shaft rotates synchronously. At this time, the ratchet 29 and the pawl 30 installed by the torsion spring on the inner wall of the hollow tube 28 slip against each other, the hollow tube 28 remains stationary, and the entire water and fertilizer conveying mechanism behind it does not work.

[0037] When water and fertilizer need to be applied to the seedlings, the control motor 16 drives the rotating rod 12 to rotate in the opposite direction. At this time, the pawl 30 firmly engages the ratchet 29, driving the hollow tube 28 to rotate synchronously. The bevel gear set 31 on the outer wall of the hollow tube 28 rotates accordingly and drives the reciprocating screw 32 to rotate continuously. The reciprocating screw 32 drives the externally matched moving plate 33 to make up-and-down reciprocating linear motion. The moving plate 33 further drives the slide rod 20 to rise and fall synchronously. The slide rod 20 then pulls the piston 19 inside the cylinder 18 to move back and forth.

[0038] During the reciprocating movement of piston 19, water and fertilizer inside the feed cylinder 23 are drawn through the extraction pipe 22 and alternately enter the cylinder 18 through two inlet pipes 21; and alternately flow into the connecting pipe 25 through two outlet pipes 24, and then into the U-shaped through pipe 26, and finally sprayed downwards by the evenly distributed nozzles 27 at the bottom of the through pipe 26 to complete the water and fertilizer irrigation operation for the seedlings in the seedling tray 11.

[0039] While the reciprocating screw 32 is rotating, the synchronous belt drive device 36 drives the stirring rod 34 to rotate. The stirring blades 35 on the surface of the stirring rod 34 rotate continuously inside the material cylinder 23, continuously stirring the water and fertilizer raw materials in the material cylinder 23 to prevent sedimentation and stratification of water and fertilizer, ensuring uniform water and fertilizer concentration and improving irrigation quality.

[0040] Example 2 Specifically, such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that a filter screen is provided at the connection between the liquid extraction tube 22 and the material cylinder 23.

[0041] With the above structural design, the filter screen can intercept impurities and residues in the water and fertilizer, effectively preventing impurities from entering the pipeline, cylinder 18 and nozzle 27 and causing blockage, thus improving the stability of equipment operation and extending service life.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rice seedling cultivation rack, comprising a base (1), characterized in that: The top surface of the base (1) is fixedly connected to the cultivation rack (2), and the lower ends of the left and right side walls of the cultivation rack (2) are provided with a lower shaft (3) through bearings, and the inner end of the lower shaft (3) is fixedly connected with a drive sprocket (4) coaxially. The upper ends of the left and right side walls of the cultivation rack (2) are provided with an upper shaft (5) through bearings, and the inner end of the upper shaft (5) is fixedly connected with a driven sprocket (6) coaxially. A chain (7) is connected between the driven sprocket (6) and the drive sprocket (4). The inner side of the chain (7) is evenly equipped with an installation shaft (8), and a collar (9) is rotatably sleeved on the surface of the installation shaft (8). An installation frame (10) is fixedly connected to the surface of the collar (9), and a seedling tray (11) is fixedly connected to the bottom end of the installation frame (10). The cultivation rack (2) is provided with a drive mechanism for rotating the lower shaft (3). The cultivation rack (2) is also provided with a liquid delivery mechanism for applying fertilizer water to the seedling tray (11). The liquid delivery mechanism is connected to the material cylinder (23). The drive mechanism is connected with a one-way rotation mechanism, which is connected to the liquid delivery mechanism through a transmission mechanism. The material cylinder (23) is provided with a stirring mechanism for stirring the liquid.

2. The rice seedling cultivation rack according to claim 1, characterized in that, The drive mechanism includes a rotating rod (12) located below the lower shaft (3). The rotating rod (12) passes through the left and right side walls of the cultivation rack (2) through bearings. A drive gear (13) is symmetrically fixedly installed on the surface of the rotating rod (12). The drive gear (13) meshes with a driven gear (14) fixedly installed on the surface of the lower shaft (3). A housing (15) is provided on the outer side of the drive gear (13) and the driven gear (14). The housing (15) is fixedly installed on the outer side of the cultivation rack (2). The rotating rod (12) passes through the side wall of the cultivation rack (2) through bearings.

3. A rice seedling cultivation rack according to claim 2, characterized in that, A motor (16) is fixedly installed on the left end of the top surface of the base (1), and the shaft end of the motor (16) is connected to the left end of the rotating rod (12) by a key.

4. A rice seedling cultivation frame according to claim 2, characterized in that, The infusion mechanism includes a support plate (17) fixedly installed on the right side of the cultivation rack (2), and a cylinder (18) fixedly installed on the top surface of the support plate (17). The cylinder (18) is provided with a piston (19) that is compatible with it, and a sliding rod (20) is fixedly connected to the bottom surface of the piston (19). The sliding rod (20) slides vertically through the bottom of the cylinder (18) and the support plate (17) in sequence. The upper and lower ends of the right side wall of the cylinder (18) are fixedly connected to the inlet pipe (21), and the right side of the inlet pipe (21) is fixedly connected to the suction pipe (22). The suction pipe (22) is fixedly connected to the lower end of the left side wall of the material cylinder (23), and the material cylinder (23) is fixedly installed on the top surface of the base (1).

5. A rice seedling cultivation frame according to claim 4, characterized in that, The infusion mechanism also includes an outlet pipe (24) that is fixedly connected to the upper and lower ends of the left side wall of the cylinder (18), and a connecting pipe (25) is fixedly connected to the left end of the outlet pipe (24). A through pipe (26) is fixedly connected to the top end of the connecting pipe (25), and the through pipe (26) is fixedly connected to the left and right side walls of the cultivation rack (2) laterally. The through pipe (26) has a U-shaped structure, and nozzles (27) are evenly installed at the bottom of the through pipe (26). The nozzles (27) are located above the seedling tray (11).

6. A rice seedling cultivation rack according to claim 5, characterized in that, Both the inlet pipe (21) and the outlet pipe (24) are equipped with one-way valves.

7. A rice seedling cultivation frame according to claim 4, characterized in that, The one-way rotation mechanism includes a hollow tube (28) sleeved on the outside of the rotating rod (12), and the right end face of the hollow tube (28) is connected to the inside of the right side housing (15) by a bearing. The axis of the hollow tube (28) is collinear with the axis of the rotating rod (12), and a ratchet (29) is fixedly installed on the surface of the rotating rod (12). The ratchet (29) is located inside the hollow tube (28), and the hollow tube (28) is engaged with a pawl (30) installed on the inner wall of the hollow tube (28) by a torsion spring.

8. A rice seedling cultivation frame according to claim 7, characterized in that, The transmission mechanism includes a bevel gear set (31) fixedly installed on the outer wall of the hollow tube (28), and the bevel gear set (31) is fixedly connected to the bottom end of the reciprocating screw (32). The reciprocating screw (32) passes through the top of the right housing (15) through a bearing, and the top surface of the reciprocating screw (32) is connected to the bottom surface of the support plate (17) through a bearing. A movable plate (33) is fitted on the outer side of the reciprocating screw (32), and the top surface of the movable plate (33) is fixedly connected to the bottom end of the slide rod (20). The rotation of the reciprocating screw (32) is used for the reciprocating linear movement of the movable plate (33).

9. A rice seedling cultivation frame according to claim 8, characterized in that, The stirring mechanism includes a stirring rod (34) that passes vertically through the center of the top of the material cylinder (23) via a bearing, and stirring blades (35) are evenly installed on the surface of the stirring rod (34), the stirring blades (35) being located inside the material cylinder (23).

10. A rice seedling cultivation rack according to claim 9, characterized in that, The top end of the stirring rod (34) is connected to the reciprocating screw (32) via a synchronous belt drive (36).

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