Rice seedling raising device and seedling raising method

Abstract

The invention relates to the technical field of rice seedling raising, and discloses a rice seedling raising device and a rice seedling raising method.The rice seedling raising device comprises a mounting rack, a seeding cylinder fixedly connected to the inner wall of the mounting rack, a rice seed hopper fixedly connected to the top of the seeding cylinder, and a seed taking cylinder mounted in the seeding cylinder, shaft sleeve rods are fixedly connected to the two ends of the seed taking cylinder, penetrate through the seeding cylinder and are rotationally connected with the seeding cylinder, and a driving part for driving the seed taking cylinder to rotate is arranged on the mounting frame; through rotation of the seed taking cylinder and cooperation of the seed supply groove, the seed taking groove and the seeding groove, continuous and uniform quantitative seeding is achieved, and the seeding efficiency and the seedling raising quality are effectively improved; and during sowing, a nutrient solution can fall onto a seedbed along with rice seeds by matching with the arrangement of a liquid guide groove and a liquid passing groove, so that accurate and uniform fertilization is realized, the uniformity of seedlings is improved, an optimal germination environment is created, and the seedling emergence quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rice seedling raising, in particular to a rice seedling raising device and method. BACKGROUND

[0002] Rice is the most important food crop in China, and its stable high yield is of strategic significance to the national food security. Seedling raising is the first process of rice production, and the quality of seedlings directly determines the yield and quality of rice.

[0003] At present, conventional rice seedling raising devices mostly use mechanical seeders in combination with manual or simple spraying systems for seeding and fertilization. However, such devices generally have the following problems: first, most of the devices separate seeding and nutrient solution application into two independent processes, and the nutrient solution is usually applied by top spraying or bottom soaking, which cannot realize precise coupling of seeds and nutrient solution in space and time, resulting in local excess or deficiency of fertilizer, affecting the consistency of seed germination environment; second, the surface of rice seeds is rough and contains powder dust, which is easy to form an "arch" due to electrostatic adsorption or inter-particle friction in the hopper or seed supply channel, causing interrupted or pulsed seed discharge, which destroys the continuity of seeding and makes it difficult to meet the demand for stable operation of the seedling raising production line. Therefore, a rice seedling raising device and method are proposed. SUMMARY

[0004] The rotation of the seed taking cylinder in combination with the seed supply groove, seed taking groove and seeding groove realizes continuous and uniform quantitative seeding, effectively improving the seeding efficiency and seedling raising quality. At the same time of seeding, in combination with the setting of the liquid guide groove and liquid passage groove, the nutrient solution can fall onto the seed bed together with the rice seeds, realizing precise and uniform fertilization, solving the problem of the inability to realize precise coupling of seeds and nutrient solution in space and time, resulting in local excess or deficiency of fertilizer, affecting the consistency of seed germination environment.

[0005] The present application provides the following technical scheme: A rice seedling raising device, comprising a mounting frame, a seeding cylinder fixedly connected to the inner wall of the mounting frame, and a rice seed hopper fixedly connected to the top of the seeding cylinder, further comprising: a seed taking cylinder installed in the seeding cylinder, both ends of the seed taking cylinder being fixedly connected with shaft sleeve rods, wherein both shaft sleeve rods are penetrating through the seeding cylinder and rotationally connected thereto, and the mounting frame is provided with a driving part for driving the seed taking cylinder to rotate; a nutrient supply cylinder installed in the seeding cylinder, both ends of the nutrient supply cylinder being fixedly connected with hollow shafts, the hollow shafts penetrating through the seed taking cylinder and the seeding cylinder and rotationally connected with the side wall of the mounting frame, wherein both sides of the mounting frame are provided with a liquid supply part for supplementing nutrient solution into the nutrient supply cylinder.

[0006] As a preferred technical scheme of the present application, the driving part comprises a driving motor fixedly connected to the mounting frame, an output shaft end of the driving motor is fixedly connected with a driving gear, an outer end sidewall of the shaft sleeve rod is fixedly connected with a driven gear, the driven gear is in meshing connection with the driving gear, and the shaft sleeve rod is wrapped outside the hollow rotating shaft.

[0007] As a preferred technical scheme of the present application, a plurality of groups of seed taking grooves are equidistantly arranged on the outer wall of the seed taking cylinder, a plurality of groups of seed supply grooves are equidistantly arranged on the inner cavity bottom of the rice seed hopper, and a plurality of groups of seeding grooves are equidistantly arranged on the inner cavity bottom of the seeding cylinder. The seed supply grooves, the seed taking grooves and the seeding grooves are adapted to each other, that is, when the seed taking cylinder rotates, the seed taking grooves will be in communication with the corresponding seed supply grooves and the seeding grooves, respectively.

[0008] As a preferred technical scheme of the present application, the liquid supply part comprises two groups of liquid storage tanks, the two groups of liquid storage tanks are respectively fixed on the two side top portions of the mounting frame, the bottom of the liquid storage tank is fixedly connected with a liquid guide pipe, the other end of the liquid guide pipe is fixed on the mounting frame and is in communication with the inner cavity of the hollow rotating shaft, and a valve is arranged on the liquid guide pipe. A liquid passing groove is arranged in each group of seed taking grooves, and a plurality of groups of liquid guide grooves are equidistantly arranged on the inner cavity bottom of the seed supply cylinder. The liquid guide grooves are adapted to the liquid passing grooves, that is, when the seed taking cylinder rotates, the liquid guide grooves will be in communication with the corresponding liquid passing grooves.

[0009] As a preferred technical scheme of the present application, a linkage shaft is rotatably connected in the liquid storage tank, a stirring impeller is fixedly connected to the outer wall of the linkage shaft, one end of the linkage shaft is rotatably connected to the outer wall of the rice seed hopper, and the linkage shaft and the hollow rotating shaft are in transmission connection through a belt pulley set.

[0010] As a preferred technical scheme of the present application, a plurality of groups of magnetic rings are rotatably connected in the seed supply cylinder, a plurality of groups of liquid scraping plates are fixedly connected between the plurality of groups of magnetic rings, and the magnetic rings and the inner wall of the seed taking cylinder are magnetically attracted to each other.

[0011] As a preferred technical scheme of the present application, an arch breaking rod is fixedly connected in the rice seed hopper, a plurality of groups of air blowing holes are equidistantly arranged on the bottom of the arch breaking rod, the inner cavity of the linkage shaft is divided into an air inlet cavity and an air exhaust cavity, the air exhaust cavity is in communication with the arch breaking rod, the air inlet cavity is in communication with the outside, and a gas guide part for filling gas into the arch breaking rod is arranged on the stirring impeller.

[0012] As a preferred technical scheme of the present application, the air guide part comprises a plurality of piston boxes, each of which is fixed on the back surface of each blade of the stirring impeller, and a notch communicating with the piston box is formed on the water-facing surface of each blade of the stirring impeller, a water resistance plate is slidably connected in the piston box, a return spring is fixedly connected between the water resistance plate and the inner wall of the piston box, an air inlet pipe and an air outlet pipe are fixedly connected to the side wall of the piston box, the other end of the air inlet pipe is in communication with the inner cavity of the air inlet cavity, the other end of the air outlet pipe is in communication with the air outlet cavity, and a one-way valve is arranged in each of the air inlet pipe and the air outlet pipe.

[0013] As a preferred technical scheme of the present application, the side wall of the mounting frame is fixedly connected with a pushing handrail, four groups of moving wheels are symmetrically mounted on the two sides of the mounting frame, and anti-skid protrusions are arranged on the outer wall of the moving wheels.

[0014] A rice seedling raising method, comprising the following steps: Step one: arrange the empty seedling trays closely and neatly on the seedbed, fill the substrate into the seedling trays, scrape and compact, and form a flat seedbed; Step two: load the rice seeds into the seed loading bucket, and push the mounting frame to be arranged above the seedbed; Step three: push the mounting frame along the seedbed to perform the seeding operation; Step four: drip the nutrient solution on the seeds falling to the seedbed while seeding Step five: cover a layer of thin substrate on the surface of the seeded seedbed.

[0015] Compared with the prior art, the present application provides a rice seedling raising device and method, which has the following beneficial effects: 1. The rice seedling raising device realizes continuous and uniform quantitative seeding through the rotation of the seed taking cylinder, the cooperation of the seed supply groove, the seed taking groove and the seeding groove, effectively improves the seeding efficiency and seedling raising quality, cooperates with the setting of the liquid guide groove and the liquid passage groove while seeding, enables the nutrient solution to fall to the seedbed together with the rice seeds, realizes accurate and uniform fertilization, improves the uniformity of seedlings, creates the best germination environment, and improves the emergence quality.

[0016] 2. The rice seedling raising device drives the stirring impeller to rotate in the liquid storage tank through the rotation of the shaft sleeve rod and the transmission of the belt pulley set, and drives the liquid scraping plate to rotate in the seed supply cylinder through the magnetic attraction between the magnetic ring and the seed taking cylinder, so as to ensure the uniform distribution of the internal components of the nutrient solution in the conveying process, and effectively improve the fertilization effect.

[0017] 3. The rice seedling raising device, through the setting of the piston box, the water resistance plate, the return spring, the air inlet pipe and the air outlet pipe, can continuously generate downward airflow at the bottom of the arch breaking rod, effectively avoids the arching and blocking of the rice seeds, ensures the continuity and stability of the falling of the rice seeds, and further improves the final seedling raising quality; and with the reciprocating sliding of the water resistance plate, a multidirectional push flow effect can be generated in the liquid storage tank to assist the better mixing of the nutrient solution. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0019] Figure 1 is a first perspective view of the present application; Figure 2 is a second perspective view of the present application; Figure 3 is a schematic view of the internal structure of the seeding cylinder of the present application; Figure 4 is a schematic view of the overall partial section of the present application; Figure 5 is a schematic view of the internal structure of the stirring impeller of the present application; Figure 4 is a schematic view of the enlarged structure of area A in the present application; Figure 6 is a schematic view of the enlarged structure of area B in the present application; Figure 4 is a schematic view of the enlarged structure of area C in the present application; Figure 7 Figure 4 is a schematic view of the enlarged structure of area C in the present application; Figure 8 is a schematic view of the internal structure of the stirring impeller of the present application.

[0020] In the drawings: 1, mounting frame; 2, seeding cylinder; 21, rice seed hopper; 211, seed supply groove; 22, seeding groove; 3, seed taking cylinder; 31, shaft sleeve rod; 32, seed taking groove; 321, liquid passage; 4, nutrient supply cylinder; 41, hollow rotating shaft; 42, liquid guide groove; 43, magnetic ring; 431, liquid scraping plate; 5, driving motor; 51, driving gear; 52, driven gear; 6, liquid storage tank; 61, liquid guide pipe; 62, linkage shaft; 621, air inlet cavity; 622, air outlet cavity; 63, stirring impeller; 64, pulley set; 7, arch breaking rod; 71, air blowing hole; 72, piston box; 73, water resistance plate; 74, return spring; 75, air inlet pipe; 76, air outlet pipe; 8, pushing handrail; 81, moving wheel. DETAILED DESCRIPTION

[0021] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort should fall into the scope of the present application.

[0022] Embodiment one: With reference to Figures 1-8 A rice seedling raising device, comprising a mounting frame 1, a push handrail 8 fixedly connected to the side wall of the mounting frame 1, four groups of moving wheels 81 symmetrically installed on both sides of the mounting frame 1, anti-skid protrusions provided on the outer wall of the moving wheels 81, a seeding cylinder 2 fixedly connected to the inner wall of the mounting frame 1, a rice seed hopper 21 fixedly connected to the top of the seeding cylinder 2, and further comprising: a seed taking cylinder 3 installed in the seeding cylinder 2, the two ends of the seed taking cylinder 3 are fixedly connected with shaft sleeve rods 31, wherein the shaft sleeve rods 31 on both sides penetrate through the seeding cylinder 2 and are rotationally connected therewith, and the mounting frame 1 is provided with a driving part for driving the seed taking cylinder 3 to rotate; a feeding cylinder 4 installed in the seeding cylinder 2, hollow shafts 41 fixedly and communicatively provided at both ends of the feeding cylinder 4, the hollow shafts 41 penetrate through the seed taking cylinder 3 and the seeding cylinder 2 and are rotationally connected with the side wall of the mounting frame 1, wherein the mounting frame 1 is provided with a liquid supply part for supplying nutrient liquid into the feeding cylinder 4 on both sides.

[0023] With reference to Figures 1-3 and Figure 5 The driving part comprises a driving motor 5 fixedly connected to the mounting frame 1, a driving gear 51 fixedly connected to the output shaft end of the driving motor 5, a driven gear 52 fixedly connected to the outer end side wall of the shaft sleeve rod 31, the driven gear 52 is meshingly connected with the driving gear 51, and the shaft sleeve rod 31 is rotationally wrapped on the outside of the hollow shaft 41; a plurality of seed taking grooves 32 are equally spaced on the outer wall of the seed taking cylinder 3, a plurality of seed supply grooves 211 are equally spaced on the inner cavity bottom of the rice seed hopper 21, and a plurality of seeding grooves 22 are equally spaced on the inner cavity bottom of the seeding cylinder 2, the seed supply grooves 211, the seed taking grooves 32 and the seeding grooves 22 are adapted to each other, that is, when the seed taking cylinder 3 rotates, the seed taking grooves 32 will be respectively communicated with the corresponding seed supply grooves 211 and the seeding grooves 22.

[0024] Through the arrangement of the above structure, first, the rice seeds are loaded into the rice seed hopper 21, then the whole mounting frame 1 is moved, and the driving motor 5 is started at the same time. The meshing relationship between the driven gear 52 and the driving gear 51 drives the shaft sleeve rod 31 and the seed taking cylinder 3 to rotate, so that the seed taking groove 32 is first communicated with the seed supply groove 211. At this time, an appropriate amount of rice seeds (2-3) will fall into the seed taking groove 32. Then, with the continuous rotation of the seed taking cylinder 3, the seed taking groove 32 with rice seeds will be finally communicated with the seeding groove 22. At this time, the rice seeds will fall along the seeding groove 22 to the prepared seedbed, so as to realize continuous and uniform quantitative seeding, effectively improve the seeding efficiency and seedling quality.

[0025] With reference to Figures 3-6 , the liquid supply part includes two groups of liquid storage tanks 6, which are fixed on the top of the two sides of the mounting frame 1. The bottom of the liquid storage tank 6 is fixed and communicated with the liquid guide pipe 61, the other end of the liquid guide pipe 61 is fixed on the mounting frame 1 and communicated with the inner cavity of the hollow rotating shaft 41, and the liquid guide pipe 61 is provided with an opening and closing valve. Each group of seed taking grooves 32 is provided with a liquid passing groove 321, and the bottom of the inner cavity of the seed taking cylinder 4 is provided with a plurality of groups of liquid guide grooves 42 at equal intervals. The liquid guide grooves 42 are matched with the liquid passing grooves 321, that is, when the seed taking cylinder 3 rotates, the liquid guide grooves 42 will be communicated with the corresponding liquid passing grooves 321.

[0026] Through the arrangement of the above structure, at the same time of seeding, the opening and closing valve on the liquid guide pipe 61 is opened, so that the prepared nutrient solution in the liquid storage tank 6 enters the seed taking cylinder 4 along the liquid guide pipe 61 and the hollow rotating shaft 41 under the action of gravity. When the seed taking groove 32 with rice seeds is communicated with the seeding groove 22, the liquid guide groove 42 will also be communicated with the liquid passing groove 321 at this time. The nutrient solution in the seed taking cylinder 4 drops into the seed taking groove 32 and falls to the seedbed together with the rice seeds, realizing accurate and uniform fertilization, ensuring that each seedling obtains consistent starting nutrients, greatly improving the uniformity of seedlings, providing available nutrients, eliminating the "weaning period" crisis of rice seeds, creating the best germination environment, and improving the emergence quality.

[0027] With reference to Figures 3-5 and Figure 8 , the liquid storage tank 6 is rotatably connected with a linkage shaft 62, the outer wall of the linkage shaft 62 is fixedly connected with an agitating impeller 63, one end of the linkage shaft 62 is rotatably connected with the outer wall of the rice seed hopper 21, and the linkage shaft 62 and the hollow rotating shaft 41 are drivingly connected through a belt pulley set 64; a plurality of groups of magnetic rings 43 are rotatably connected in the seed taking cylinder 4, a plurality of groups of liquid scraping plates 431 are fixedly connected between the plurality of groups of magnetic rings 43, and the magnetic rings 43 and the inner wall of the seed taking cylinder 3 are magnetically attracted.

[0028] Through the arrangement of the above structure, when the shaft sleeve rod 31 rotates, the transmission of the belt pulley set 64 drives the linkage shaft 62 and the stirring impeller 63 to rotate, thereby stirring the nutrient solution in the liquid storage tank 6. When the feeding cylinder 4 rotates, the magnetic ring 43 and the liquid scraping plate 431 are driven to rotate in the feeding cylinder 4 by the magnetic attraction between the magnetic ring 43 and the inner wall of the seed taking cylinder 3, thereby stirring the nutrient solution in the feeding cylinder 4. This ensures the uniform distribution of the internal components of the nutrient solution at the beginning and end of the delivery, improves the fertilization effect, and avoids the adhesion of the nutrient solution to the inner wall of the feeding cylinder 4, thereby improving the convenience of cleaning the feeding cylinder 4.

[0029] With reference to Figure 5 , Figure 7 and Figure 8 , the arch breaking rod 7 is fixedly connected in the rice seed hopper 21, a plurality of groups of air blowing holes 71 are arranged at the bottom of the arch breaking rod 7 at equal intervals, the inner cavity of the linkage shaft 62 is divided into an air inlet cavity 621 and an air outlet cavity 622, the air outlet cavity 622 is in communication with the arch breaking rod 7, the air inlet cavity 621 is in communication with the outside, and the stirring impeller 63 is provided with a gas guide part for filling gas into the arch breaking rod 7; the gas guide part includes a plurality of groups of piston boxes 72, the piston boxes 72 are respectively fixed on the backwater surfaces of each group of blades of the stirring impeller 63, the water surfaces of each group of blades of the stirring impeller 63 are provided with slots in communication with the piston boxes 72, a water resistance plate 73 is slidably connected in the piston box 72, a return spring 74 is fixedly connected between the water resistance plate 73 and the inner wall of the piston box 72, an air inlet pipe 75 and an air outlet pipe 76 are respectively fixed on the side wall of the piston box 72 and are in communication, the other end of the air inlet pipe 75 is in communication with the inner cavity of the air inlet cavity 621, the other end of the air outlet pipe 76 is in communication with the air outlet cavity 622, and one-way valves are arranged in the air inlet pipe 75 and the air outlet pipe 76.

[0030] It should be noted that the one-way valve in the air inlet pipe 75 can only allow the outside air to enter the piston box 72; the one-way valve in the air outlet pipe 76 can only allow the gas in the piston box 72 to enter the arch breaking rod 7.

[0031] Through the arrangement of the above structure, when the stirring impeller 63 rotates, the resistance received by the blades at different heights is different. When the blade rotates to the position close to the bottom of the inner cavity of the liquid storage tank 6, the gap between the blade tip and the cavity bottom becomes the smallest. The nutrient solution is forced to pass through this narrow channel, the flow rate increases sharply, the local pressure drops sharply (Bernoulli principle), and the water flow pushed by the blade water surface has no place to escape, causing the pressure in front of it to rise sharply. Therefore, the liquid resistance at this position is the largest, which will squeeze the water resistance plate 73 to the side of the compression return spring 74 to the greatest extent, compress the gas in the piston box 72, and open the one-way valve in the corresponding air outlet pipe 76. The gas enters the arch breaking rod 7 along the air outlet pipe 76, the exhaust cavity 622, and finally blows down along the air blowing hole 71. When the blade passes through the area with the largest water resistance, the water resistance plate 73 will gradually reset under the rebound action of the return spring 74, and a negative pressure suction will be generated in the piston box 72. The one-way valve in the air inlet pipe 75 is opened, and the outside air flow is supplemented to the piston box 72 along the air inlet cavity 621 and the air inlet pipe 75. Thus, the downward moving air flow is continuously generated at the bottom of the arch breaking rod 7 during the seeding process, thereby generating a downward dragging force, effectively preventing the material arch from being blocked at the bottom of the rice seed hopper 21, achieving the effect of dredging, ensuring the continuity and stability of the rice seed falling, and thereby improving the final seedling quality. And with the reciprocating sliding of the water resistance plate 73, a multidirectional plug flow effect can also be generated in the liquid storage tank 6 to assist the better mixing of the nutrient solution.

[0032] Example two: The same as example one, on the basis of example one, a rice seedling raising method is proposed, the steps are as follows: Step one: arrange the empty seedling trays closely and neatly on the seedbed, fill the substrate into the seedling trays, scrape and compact, and form a flat seedbed; Step two: load the rice seeds into the rice seed hopper 21, and push the mounting frame 1 to be erected above the seedbed; Step three: push the mounting frame 1 along the seedbed to perform the seeding operation; Step four: while seeding, drip the nutrient solution on the seeds falling to the seedbed Step five: cover a layer of thin substrate on the surface of the seeded seedbed.

[0033] Reference Figures 1-8In the application, when in use, first, the rice seeds are loaded into the rice seed hopper 21, then the whole mounting frame 1 is moved, and the driving motor 5 is started at the same time, the shaft sleeve rod 31 and the seed taking cylinder 3 are driven to rotate by the meshing relationship between the driven gear 52 and the driving gear 51, so that the seed taking groove 32 is first communicated with the seed supply groove 211, at this time, the appropriate rice seeds will fall into the seed taking groove 32, then with the continuous rotation of the seed taking cylinder 3, the seed taking groove 32 with rice seeds will be communicated with the seeding groove 22, at this time, the rice seeds will fall along the seeding groove 22 to the prepared seedbed, so as to realize continuous and uniform seeding, effectively improve the seeding efficiency and seedling raising quality.

[0034] At the same time, the on-off valve on the liquid guide pipe 61 is opened, so that the prepared nutrient solution in the liquid storage tank 6 enters the feeding cylinder 4 along the liquid guide pipe 61 and the hollow shaft 41 under the action of gravity, and when the seed taking groove 32 with rice seeds is communicated with the seeding groove 22, the liquid guide groove 42 is also communicated with the liquid guide groove 321, at this time, the nutrient solution in the feeding cylinder 4 falls into the seed taking groove 32, and falls along with the rice seeds to the seedbed, realizes accurate and uniform fertilization, ensures that each seedling obtains consistent starting nutrition, greatly improves the uniformity of seedlings, provides quick-acting nutrition, eliminates the "weaning period" crisis of rice seeds, creates the best germination environment, and improves the emergence quality. In addition, when the shaft sleeve rod 31 rotates, the transmission of the belt pulley set 64 will drive the linkage shaft 62 and the stirring impeller 63 to rotate, so as to stir the nutrient solution in the liquid storage tank 6, and when the feeding cylinder 4 rotates, the magnetic attraction between the magnetic ring 43 and the inner wall of the seed taking cylinder 3 will drive the magnetic ring 43 and the liquid scraping plate 431 to rotate in the feeding cylinder 4, so as to stir the nutrient solution in the feeding cylinder 4, ensure the uniform distribution of the internal components of the nutrient solution at the initial end and the terminal end, improve the fertilization effect, and at the same time, avoid the adhesion of the nutrient solution on the inner wall of the feeding cylinder 4, improve the convenience of cleaning the feeding cylinder 4.

[0035] In addition, when the stirring impeller 63 rotates, the blades at different heights will not be subjected to the same resistance. When the blades rotate to a position close to the bottom of the inner cavity of the liquid storage tank 6, the liquid resistance is the largest, which will further squeeze the water resistance plate 73 to slide to one side of the compression return spring 74 to the greatest extent, so as to compress the gas in the piston box 72 and open the one-way valve in the corresponding air outlet pipe 76, so that the gas enters the arch breaking rod 7 along the air outlet pipe 76 and the exhaust cavity 622, and finally blows downward along the air blowing hole 71. When the blades pass through the area with the largest water resistance, the water resistance plate 73 will gradually reset under the rebounding action of the return spring 74, and a negative pressure suction will be generated in the piston box 72, so that the one-way valve in the air inlet pipe 75 is opened, and the external airflow is supplemented into the piston box 72 along the air inlet cavity 621 and the air inlet pipe 75. Thus, the downward airflow will be continuously generated at the bottom of the arch breaking rod 7 during the sowing process, thereby generating a downward drag force, effectively avoiding the blockage of the rice seed arch at the bottom of the rice seed hopper 21, achieving the effect of dredging, and ensuring the continuity and stability of the rice seed falling, thereby improving the final seedling quality. In addition, the reciprocating sliding of the water resistance plate 73 can also generate a multidirectional plug flow effect in the liquid storage tank 6 to assist the better mixing of the nutrient solution.

[0036] Components not described in detail herein are prior art.

[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rice seedling raising device comprising a mounting rack (1), characterized in that, The inner wall of the mounting frame (1) is fixedly connected with a seeding cylinder (2), the top of the seeding cylinder (2) is fixedly connected with a rice seed hopper (21), and the mounting frame (1) is further provided with: A seed taking cylinder (3) is installed in the seeding cylinder (2), both ends of the seed taking cylinder (3) are fixedly connected with shaft sleeve rods (31), Wherein, both of the shaft sleeve rods (31) penetrate through the seeding cylinder (2) and are rotatably connected therewith, and the mounting frame (1) is provided with a driving part for driving the seed taking cylinder (3) to rotate; A feeding cylinder (4) is installed in the seeding cylinder (2), both ends of the feeding cylinder (4) are fixedly and communicatively provided with hollow rotating shafts (41), the hollow rotating shafts (41) penetrate through the seed taking cylinder (3) and the seeding cylinder (2) and are rotatably connected with the side wall of the mounting frame (1), Wherein, both sides of the mounting frame (1) are provided with liquid supply parts for supplying nutrient solution into the feeding cylinder (4).

2. The rice seedling raising device according to claim 1, wherein The driving part comprises a driving motor (5), the driving motor (5) is fixedly connected with the mounting frame (1), the output shaft end of the driving motor (5) is fixedly connected with a driving gear (51), the outer end side wall of the shaft sleeve rod (31) is fixedly connected with a driven gear (52), the driven gear (52) is meshingly connected with the driving gear (51), and the shaft sleeve rod (31) is rotatably wrapped outside the hollow rotating shaft (41).

3. The rice seedling raising device according to claim 1, wherein A plurality of groups of seed taking grooves (32) are equally spaced on the outer wall of the seed taking cylinder (3), a plurality of groups of seed supply grooves (211) are equally spaced on the inner cavity bottom of the rice seed hopper (21), and a plurality of groups of seeding grooves (22) are equally spaced on the inner cavity bottom of the seeding cylinder (2), the seed supply grooves (211), the seed taking grooves (32) and the seeding grooves (22) are matched, that is, when the seed taking cylinder (3) rotates, the seed taking grooves (32) will be respectively communicated with the corresponding seed supply grooves (211) and the seeding grooves (22).

4. The rice seedling raising device according to claim 3, wherein The liquid supply part comprises two groups of liquid storage tanks (6), the two groups of liquid storage tanks (6) are respectively fixed on the top of both sides of the mounting frame (1), the bottom of the liquid storage tank (6) is fixedly and communicatively provided with a liquid guide pipe (61), the other end of the liquid guide pipe (61) is fixed on the mounting frame (1) and is in communication with the inner cavity of the hollow rotating shaft (41), and the liquid guide pipe (61) is provided with an on-off valve, a liquid passing groove (321) is formed in each group of seed taking grooves (32), a plurality of groups of liquid guide grooves (42) are equally spaced on the inner cavity bottom of the feeding cylinder (4), and the liquid guide grooves (42) are matched with the liquid passing grooves (321), that is, when the seed taking cylinder (3) rotates, the liquid guide grooves (42) will be communicated with the corresponding liquid passing grooves (321).

5. The rice seedling raising device according to claim 4, wherein A linkage shaft (62) is rotatably connected in the liquid storage tank (6), a stirring impeller (63) is fixedly connected on the outer wall of the linkage shaft (62), one end of the linkage shaft (62) is rotatably connected with the outer wall of the rice seed hopper (21), and the linkage shaft (62) is drivingly connected with the hollow rotating shaft (41) through a belt wheel set (64).

6. The rice seedling raising device according to claim 1, wherein Multiple sets of magnetic rings (43) are rotatably connected inside the nutrient supply cylinder (4), and multiple sets of scraper blades (431) are fixedly connected between the multiple sets of magnetic rings (43). The magnetic rings (43) are magnetically attracted to the inner wall of the seed collection cylinder (3).

7. The rice seedling raising device according to claim 5, wherein The rice seed hopper (21) is fixedly connected to a breaking rod (7). The bottom of the breaking rod (7) is provided with multiple sets of air blowing holes (71) at equal intervals. The inner cavity of the linkage shaft (62) is divided into an air inlet chamber (621) and an exhaust chamber (622). The exhaust chamber (622) is connected to the breaking rod (7). The air inlet chamber (621) is connected to the outside. The stirring impeller (63) is provided with an air guide to fill the breaking rod (7) with airflow.

8. The rice seedling raising device according to claim 7, wherein The air guide section includes multiple sets of piston boxes (72). The multiple sets of piston boxes (72) are respectively fixed on the back surface of each set of blades of the agitator (63). Each set of blades of the agitator (63) has a slot that communicates with the piston box (72) on its front surface. A water baffle plate (73) is slidably connected inside the piston box (72). A return spring (74) is fixedly connected between the water baffle plate (73) and the inner wall of the piston box (72). An air inlet pipe (75) and an air outlet pipe (76) are fixed and connected to the side wall of the piston box (72). The other end of the air inlet pipe (75) is connected to the inner cavity of the air inlet chamber (621). The other end of the air outlet pipe (76) is connected to the exhaust chamber (622). A one-way valve is provided in both the air inlet pipe (75) and the air outlet pipe (76).

9. The rice seedling raising device according to claim 1, wherein The mounting frame (1) has a push handle (8) fixedly connected to its side wall. Four sets of moving wheels (81) are symmetrically installed on both sides of the mounting frame (1), and anti-slip protrusions are provided on the outer wall of the moving wheels (81).

10. A rice seedling raising method using the rice seedling raising apparatus according to any one of claims 1 to 9, characterized by, The steps are as follows: Step 1: Arrange the empty seedling trays tightly and neatly on the seedbed, fill the seedling trays with substrate, scrape and compact them to form a flat seedbed; Step 2: Load the rice seeds into the seed hopper (21) and push the mounting frame (1) to set it up directly above the seed bed; Step 3: Push the mounting frame (1) along the seed bed to carry out the sowing operation; Step 4: At the same time as sowing, spray nutrient solution onto the seeds that fall into the seedbed. Step 5: Cover the surface of the seedbed with a thin layer of substrate after sowing.

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