Tobacco floating seedling nutrient solution concentration circulating and heating device

Abstract

The utility model relates to the technical field of tobacco floating seedling raising equipment, in particular to a tobacco floating seedling raising nutrient solution concentration circulating and heating device. According to the technical scheme, the floating seedling raising device comprises a seedling raising pond and floating seedling raising trays, a circulating pump is arranged in the seedling raising pond, the floating seedling raising device further comprises a supporting plate arranged in the seedling raising pond, and the two sides of the supporting plate are fixedly connected with filtering brackets for containing the floating seedling raising trays; and a pair of stirring mechanisms. According to the nutrient solution concentration circulating and heating device, the supporting plate, the filtering bracket, the stirring mechanism, the mounting groove, the lifting mechanism and other structures are matched, when the nutrient solution concentration circulating and heating device is used, the air cylinder is started to separate the floating seedling raising plate from a nutrient solution, the circulating pump and the heating pipe are started, and the motor is used for driving the stirring paddle to accelerate mixing; after the nutrient solution is uniform, the stirring motor is closed, and the cylinder is restarted to immerse the seedling tray into the nutrient solution. The impact stage and the seedling raising stage are isolated through the lifting mechanism, radicles are prevented from being impacted by starting water flow, and the survival rate is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco floating seedling raising equipment, and in particular to a nutrient solution concentration circulation and heating device for tobacco floating seedling raising. Background Technology

[0002] Floating tobacco seedling cultivation is a modern tobacco seedling technology primarily used in tobacco planting to cultivate robust seedlings. Its core principle involves floating seed trays containing tobacco seeds and substrate in a water tank (seedling pool) containing nutrient solution. The seedling pool is typically equipped with a nutrient solution concentration circulation and heating device to meet the precise nutrient and temperature requirements of the seedlings during growth. In existing technologies, circulation pumps are commonly used to achieve uniform nutrient solution concentration circulation and even distribution after heating. However, when the circulation pump is first turned on, the liquid suddenly accelerates from a static state to its rated flow rate, resulting in inertial impact (water hammer effect) and a high peak flow rate in a short period. In the early stages of seedling cultivation, the seedling roots are delicate and loosely attached to the surface of the substrate. At this time, the water flow easily dissipates the substrate, exposing or even breaking the young roots, causing seedling damage and affecting the survival rate and uniformity of growth. Utility Model Content

[0003] The purpose of this invention is to address the problem that existing technologies use circulating pumps to achieve uniform distribution of nutrient solution, but the high-speed water flow generated by the water hammer effect during startup can easily wash away the substrate and break the delicate young roots in the early stage of seedling cultivation, affecting the survival and uniformity of tobacco seedlings. The invention proposes a device for circulating and heating the concentration of nutrient solution in tobacco leaf floating seedling cultivation.

[0004] The technical solution of this utility model: a nutrient solution concentration circulation and heating device for floating seedling cultivation of tobacco leaves, including a seedling pool and a floating seedling tray. The seedling pool is equipped with a circulation pump, and also includes: a support plate set inside the seedling pool, with filter brackets for placing the floating seedling trays fixedly connected to both sides of the support plate; a pair of stirring mechanisms installed at both ends of the support plate; and an installation groove opened on the seedling pool, with a lifting mechanism in the installation groove that drives the support plate to move up and down.

[0005] Optionally, the stirring mechanism includes a motor fixedly connected to the upper surfaces of both ends of the support plate, and the output shaft of the motor movably passes through the support plate and is fixedly connected to a stirring paddle.

[0006] Optionally, the inside of the seedling pool is provided with a convex plate, and the lower surfaces of both ends of the support plate are fixedly connected with support brackets that hold the convex plate in place.

[0007] Optionally, the lifting mechanism includes a cylinder disposed in the mounting groove, a support cylinder is fixedly connected to the upper surface of the middle part of the convex plate, a push rod inserted into the support cylinder is fixedly connected to the piston rod of the cylinder, and the end of the push rod away from the cylinder moves through the support plate and is fixedly connected to the circular clamping plate.

[0008] Optionally, the support cylinder has a pair of limiting grooves inside, and the outer wall of the end of the push rod near the cylinder is fixedly connected to a pair of limiting sliders that are inserted into the limiting grooves.

[0009] Optionally, the inner wall of the seedling pool is provided with multiple pairs of heating pipes.

[0010] Optionally, a sealing cover that covers the motor is fixedly connected to the upper surfaces of both ends of the support plate.

[0011] Optionally, the pair of motors, agitators, and filter holders are symmetrically arranged around a circular plate, and the filter holders are provided with multiple permeation holes.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes a combination of a support plate, a filter bracket, a stirring mechanism, an installation groove, and a lifting mechanism. When using the nutrient solution concentration circulation and heating device, the cylinder is activated to remove the floating seedling tray from the nutrient solution, then the circulation pump and heating pipe are started, and the motor drives the stirring paddle to accelerate mixing. After the nutrient solution is uniform, the stirring motor is turned off, and the cylinder is restarted to immerse the seedling tray in the nutrient solution. This method isolates the impact stage from the seedling stage through the lifting mechanism, avoiding impact on the young roots from the starting water flow and improving the survival rate. Attached Figure Description

[0014] Figure 1 A schematic diagram of the nutrient solution concentration circulation and heating device for floating tobacco seedling cultivation of this utility model is provided.

[0015] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0016] Figure 3 for Figure 1 A partial cross-sectional structural diagram.

[0017] Attached reference numerals: 1. Seedling pool; 11. Mounting groove; 12. Cylinder; 13. Heating pipe; 14. Convex plate; 15. Support cylinder; 16. Limiting slide groove; 17. Top rod; 18. Limiting slider; 2. Support plate; 21. Support bracket; 22. Circular bracket; 23. Motor; 24. Agitator; 25. Filter bracket; 26. Infiltration hole; 27. Floating seedling tray; 28. Sealing cover. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example

[0025] like Figures 1 to 3As shown, the tobacco floating seedling nutrient solution concentration circulation and heating device proposed in this utility model includes a seedling pool 1 and a floating seedling tray 27. The seedling pool 1 carries the nutrient solution and various components, providing a growth environment for the tobacco seedlings. The floating seedling tray 27 holds tobacco seeds and substrate, floating in the nutrient solution to cultivate the seedlings. A circulation pump is installed inside the seedling pool 1, and a protruding plate 14 is provided inside the seedling pool 1. The protruding plate 14 cooperates with the support bracket 21 to support the support plate 2 and limit its horizontal position. Multiple pairs of heating pipes 13 are provided on the inner wall of the seedling pool 1. The heating pipes 13 heat the nutrient solution in the seedling pool 1, making its temperature evenly distributed. The support brackets 21 that hold the protruding plates 14 are fixedly connected to the lower surfaces of both ends of the support plate 2. The support brackets 21 are fixed to the lower surface of the support plate 2, holding the protruding plates 14 and ensuring the stability of the support plate 2. The seedling tray 1 is equipped with a support plate 2, which is mounted on the protruding plate 14 via a support bracket 21, supporting the filter bracket 25 and the floating seedling tray 27. Filter brackets 25 for holding the floating seedling tray 27 are fixedly connected to both sides of the support plate 2. The filter brackets 25, with permeation holes 26, facilitate nutrient solution permeation. An installation groove 11 is provided on the seedling tray 1 to accommodate a lifting mechanism (cylinder 12) for moving the support plate 2 up and down.

[0026] Among them, such as Figures 1 to 2 As shown, a pair of stirring mechanisms are installed at both ends of the support plate 2. Each stirring mechanism includes a motor 23 fixedly connected to the upper surface of both ends of the support plate 2. The motor 23, located at both ends of the support plate 2, has an output shaft that drives a stirring paddle 24 to rotate, accelerating the uniform mixing of the nutrient solution. The output shaft of the motor 23 passes through the support plate 2 and is fixedly connected to the stirring paddle 24. The stirring paddle 24 is immersed in the nutrient solution and stirs the liquid during rotation, aiding in the uniform distribution of concentration and temperature. Sealing covers 28 are fixedly connected to the upper surface of both ends of the support plate 2, covering the motor 23 to prevent nutrient solution from splashing in and protecting the motor 23 for normal operation. The pair of motors 23, the stirring paddle 24, and the filter bracket 25 are symmetrically arranged around a circular clamping plate 22. Multiple permeation holes 26 are provided on the filter bracket 25.

[0027] In addition, such as Figures 2 to 3As shown, the lifting mechanism within the mounting slot 11 drives the support plate 2 to move up and down. The lifting mechanism includes a cylinder 12 housed within the mounting slot 11. The cylinder 12, via a piston rod, pushes a top rod 17, causing the support plate 2 to rise and fall, thus allowing the floating seedling tray 27 to detach or be immersed in the nutrient solution. A support cylinder 15 is fixedly connected to the upper surface of the convex plate 14. The support cylinder 15 is fixed to the upper surface of the convex plate 14, and its internal limiting groove 16 cooperates with the limiting slider 18 of the top rod 17, guiding the top rod 17 to slide vertically and ensuring smooth lifting. The piston rod of the cylinder 12 is fixedly connected to a top rod 17 inserted into the support cylinder 15. One end of the top rod 17 is connected to the piston rod of the cylinder 12, and the other end passes through the support plate 2 and is fixed to the circular clamping plate 22, transmitting lifting power. The end of the top rod 17 away from the cylinder 12 moves through the support plate 2 and is fixedly connected to the circular clamping plate 22.

[0028] It is worth noting that, such as Figure 3 As shown, a pair of limiting slide grooves 16 are provided inside the support cylinder 15. A pair of limiting sliders 18 that are engaged in the limiting slide grooves 16 are fixedly connected to the outer wall of the end of the push rod 17 that is close to the cylinder 12. The limiting sliders 18 are fixed to the outer wall of the push rod 17 and engaged in the limiting slide grooves 16 of the support cylinder 15 to prevent the push rod 17 from shaking and to ensure lifting accuracy.

[0029] In this embodiment, when using the tobacco leaf floating seedling nutrient solution concentration circulation and heating device, the cylinder 12 in the installation slot 11 is activated. Its piston rod pushes the top rod 17 to slide along the support cylinder 15, which in turn moves the circular clamping plate 22, the support plate 2, and the filter brackets 25 on both sides, causing multiple floating seedling trays 27 in the filter brackets 25 to detach from the nutrient solution in the seedling pool 1. Afterward, the stirring paddle 24 remains immersed in the nutrient solution. At this time, the circulation pump and heating pipe 13 in the seedling pool 1 are activated to heat the nutrient solution and achieve concentration circulation. Then, the motor 23 in the sealing cover 28 is activated, and its output shaft drives the stirring paddle 24 to rotate, accelerating the mixing and achieving uniformity. After the nutrient solution concentration and temperature are uniform, the motor 23 is turned off, and the cylinder 12 is restarted to immerse all the floating seedling trays 27 in the nutrient solution. When the circulation pump is running continuously, the impeller speed is constant, the power output is stable, the pump power and pipeline resistance are dynamically balanced to suppress flow velocity fluctuations, the liquid flows in a steady state, the inertia is reduced, and the water flow tends to be stable with small fluctuations.

[0030] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A nutrient solution concentration circulation and heating device for floating seedling cultivation of tobacco leaves, comprising a seedling pool (1) and a floating seedling tray (27), wherein the seedling pool (1) is equipped with a circulation pump, characterized in that, Also includes: The support plate (2) is set inside the seedling pond (1), and filter brackets (25) for placing floating seedling trays (27) are fixedly connected to both sides of the support plate (2). A pair of stirring mechanisms are installed at both ends of the support plate (2); An installation groove (11) is provided on the seedling pond (1), and a lifting mechanism is provided in the installation groove (11) to drive the support plate (2) to move up and down.

2. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 1, characterized in that, The stirring mechanism includes a motor (23) fixedly connected to the upper surfaces of both ends of the support plate (2), and the output shaft of the motor (23) is movably connected through the support plate (2) and fixedly connected to a stirring paddle (24).

3. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 1, characterized in that, The seedling pool (1) is provided with a protruding plate (14) inside, and the lower surfaces of both ends of the support plate (2) are fixedly connected with support brackets (21) that hold the protruding plate (14).

4. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 3, characterized in that, The lifting mechanism includes a cylinder (12) installed in the mounting groove (11), a support cylinder (15) is fixedly connected to the upper surface of the middle part of the convex plate (14), the piston rod of the cylinder (12) is fixedly connected to a top rod (17) inserted into the support cylinder (15), and the end of the top rod (17) away from the cylinder (12) moves through the support plate (2) and is fixedly connected to the circular clamping plate (22).

5. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 4, characterized in that, The support cylinder (15) has a pair of limiting grooves (16) inside, and the top rod (17) is fixedly connected to a pair of limiting sliders (18) that are inserted into the limiting grooves (16) on the outer wall of the end near the cylinder (12).

6. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 1, characterized in that, The inner wall of the seedling pool (1) is provided with multiple pairs of heating pipes (13).

7. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 3, characterized in that, Both ends of the support plate (2) are fixedly connected to a sealing cover (28) that covers the motor (23).

8. The tobacco leaf floating seedling nutrient solution concentration circulation and heating device according to claim 2, characterized in that, The pair of motors (23), stirring paddles (24) and filter brackets (25) are symmetrically arranged around a circular plate (22), and the filter brackets (25) are provided with multiple permeation holes (26).

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