Tobacco seedling raising irrigation equipment

Abstract

The application relates to a tobacco planting and seedling raising irrigation equipment, which comprises a base mechanism, a water conveying mechanism and a telescopic spraying mechanism. The base mechanism comprises a base and a support, the support is fixedly arranged on the base, and the middle part of the base is provided with an inner cavity. The water conveying mechanism is arranged on the base through the support, the bottom of the water conveying mechanism is provided with a water outlet, the water conveying mechanism is used for storing irrigation water, and the irrigation water is squeezed out from the water outlet through air pressure. One end of the telescopic spraying mechanism is fixedly arranged in the inner cavity, the other end of the telescopic spraying mechanism is provided with a nozzle which is communicated with the water outlet, the telescopic spraying mechanism is used for telescopic adjustment of the distance of the nozzle and spraying of the irrigation water. One end fixed in the inner cavity is a fixed end, and the other end is a telescopic end. The tobacco planting and seedling raising irrigation equipment can adapt to different seedling raising requirements to avoid uneven water distribution, and realizes stable and controllable spraying amount.

Description

Technical Field

[0001] This application relates to the field of tobacco cultivation, and more particularly to an irrigation device for tobacco seedling cultivation. Background Technology

[0002] In tobacco cultivation, the seedling stage is crucial in determining the subsequent growth quality and yield of tobacco leaves, and scientific and rational irrigation is one of the core conditions for ensuring robust seedling growth. Seedlings have fragile root systems and are sensitive to water requirements, necessitating precise control of irrigation volume, coverage, and uniformity to provide a stable growth environment. With the increasing scale and intensification of tobacco cultivation, traditional manual irrigation methods are no longer sufficient to meet the demands of efficient seedling cultivation. Automated and intelligent seedling irrigation equipment has become an important technological support for improving seedling efficiency and quality, and is of great significance for reducing labor costs and increasing seedling survival rates.

[0003] Currently, most existing irrigation equipment for tobacco seedlings uses fixed sprinkler structures or simple pipeline water delivery methods. However, fixed sprinklers, due to their non-adjustable position, are difficult to adapt to the irrigation needs of seedlings at different spacings and growth stages. This can easily lead to oversaturation in areas near the sprinkler and insufficient water in areas further away, resulting in uneven seedling growth. Furthermore, the water delivery process often relies on gravity flow or direct pumping, which suffers from unstable water pressure. This not only causes fluctuations in water flow, affecting irrigation uniformity, but may also result in insufficient pressure causing distant sprinklers to fail to supply water properly, or sudden pressure increases leading to water waste.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To address the aforementioned issues, this application provides an irrigation device for tobacco seedling cultivation that can adapt to different seedling needs to avoid uneven water distribution and achieve stable and controllable spraying volume.

[0006] To achieve the objectives of this application, the following technical solution is provided:

[0007] This application provides an irrigation device for tobacco seedling cultivation, comprising:

[0008] A base mechanism includes a base and a support, wherein the support is fixedly mounted on the base, and the base has an inner cavity in the middle.

[0009] The water conveying mechanism is mounted on the base via the bracket, and has a water outlet at the bottom for storing irrigation water and for squeezing the irrigation water out of the water outlet by air pressure.

[0010] The telescopic spraying mechanism has one end fixedly installed in the inner cavity and the other end having a nozzle communicating with the water outlet, used to extend and adjust the distance the nozzle extends and spray irrigation water; wherein, the end fixed in the inner cavity is the fixed end and the other end is the telescopic end.

[0011] In one possible implementation, the water conveying mechanism includes a water storage tank and a water pump assembly;

[0012] The water storage tank is fixedly mounted on the bracket, with an opening at the top and a drain outlet at the bottom; the bottom of the pump assembly has a piston that cooperates with the opening, used to control the piston to move within the opening and adjust the internal pressure of the water storage tank.

[0013] In one possible implementation, the pump assembly further includes: a mounting bracket, a first screw, a planetary gear transmission component, and a first motor;

[0014] The fixing frame is fixedly connected to the bracket, has a through hole in the middle of the bottom surface, an upward connecting plate on the edge, and a connecting column at the bottom of the top surface;

[0015] The planetary gear transmission component has a first gear, a second gear and a third gear. The second gear is sleeved on the connecting column and rotatably connected to the connecting column. The first gear and the third gear mesh with the second gear and are rotatably connected to the fixed frame.

[0016] The output end of the first motor is connected to the third gear to drive the third gear to rotate; the first screw threadedly passes through the first gear, and its bottom end is fixedly connected to the top surface of the piston.

[0017] In one possible implementation, the third gear is rotatably connected to the fixed frame via a second connecting pipe, and the output end of the first motor is connected to the third gear via the second connecting pipe to drive the third gear to rotate.

[0018] In one possible implementation, the first gear is fixedly connected to the first connecting pipe and rotatably connected to the fixing frame through the first connecting pipe, wherein the inner wall of the first connecting pipe has a thread that mates with the first screw.

[0019] In one possible implementation, the telescopic spraying mechanism includes: a telescopic component and a spraying component;

[0020] The telescopic component has a fixed end and a telescopic end. The fixed end is fixedly disposed in the inner cavity, and the telescopic end extends out of the inner cavity, with an adjustable extension distance.

[0021] One end of the spraying component is connected to the water outlet, and the other end is fixed to the telescopic end of the telescopic component.

[0022] In one possible implementation, the telescopic assembly includes an opening / closing element, a scissor bracket, and a sliding element;

[0023] The opening and closing component is disposed in the inner cavity. Two connecting parts at one end of the scissor frame are connected to the opening and closing component. The opening and closing of the scissor frame controls the extension and retraction of the scissor frame. The sliding groove component has a sliding groove. Two connecting parts at the other end of the scissor frame are slidably disposed in the sliding groove.

[0024] In one possible implementation, the opening / closing element includes: a second screw and opposing moving elements;

[0025] The second screw has a limiting block in the middle section, and the front and rear sections have opposite threads respectively; the opposing moving parts are composed of two fixing blocks with the same internal thread through holes, which are threadedly connected to the front and rear sections of the second screw respectively; the two connecting parts at one end of the scissor bracket are connected to the opposing moving parts.

[0026] In one possible implementation, the spraying assembly includes a water supply pipe and a nozzle; the nozzle is connected to the water outlet through the water supply pipe, and the nozzle is fixedly mounted on the telescopic end of the telescopic assembly.

[0027] In one possible implementation, the upper part of the water storage tank has a water inlet.

[0028] The technical solution provided in this application may include the following beneficial effects:

[0029] The irrigation equipment for tobacco seedling cultivation provided in this application can adapt to different seedling spacing and growth stages by using a telescopic spraying mechanism with one end fixed to the inner cavity and the other end having an adjustable nozzle extension distance. This avoids the problem of local oversaturation or undersaturation of water caused by fixed nozzle positions. Furthermore, the water conveying mechanism can store irrigation water and use air pressure to squeeze the irrigation water out of the outlet, achieving stable and controllable water conveying pressure. This solves the problems of fluctuating water flow, poor water supply, or water waste caused by traditional water conveying methods that rely on gravity or ordinary pumps.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of the invention to explain this application and do not constitute a limitation thereof. Obviously, the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an irrigation device for tobacco seedling cultivation provided in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the structure of a tobacco seedling irrigation device provided in an embodiment of this application from another perspective;

[0034] Figure 3 This is a schematic diagram of the water conveying mechanism of an irrigation device for tobacco seedling cultivation provided in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the telescopic spraying mechanism of an irrigation device for tobacco seedling cultivation provided in an embodiment of this application.

[0036] Figure label:

[0037] 100. Base mechanism; 110. Base; 120. Bracket;

[0038] 200. Water conveying mechanism; 210. Water storage tank; 211. Water inlet; 220. Pump assembly; 221. Fixing frame; 222. Piston; 223. First screw; 224. First gear; 225. First connecting pipe; 226. Second gear; 227. Third gear; 228. Second connecting pipe; 229. First motor;

[0039] 300. Telescopic spraying mechanism; 310. Telescopic component; 311. Opening and closing component; 3111. Second screw; 3112. Opposing moving component; 312. Scissor frame; 313. Sliding chute component; 314. Second motor; 320. Spraying component; 321. Water supply pipe; 322. Sprayer head. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted.

[0042] This example embodiment first provides an irrigation device for tobacco planting and seedling cultivation. (Reference) Figures 1 to 4 As shown, the tobacco planting and seedling irrigation equipment includes a base mechanism 100, a water conveying mechanism 200, and a telescopic spraying mechanism 300.

[0043] The base mechanism 100 includes a base 110 and a support 120. The support 120 is fixedly mounted on the base 110, and the base 110 has an inner cavity in the middle.

[0044] The water conveying mechanism 200 is mounted on the base 110 via the bracket 120. It has a water outlet at the bottom for storing irrigation water and for squeezing the irrigation water out of the water outlet by air pressure.

[0045] The telescopic spraying mechanism 300 has one end fixedly installed in the inner cavity and the other end having a nozzle 322 communicating with the water outlet, which is used to adjust the extension distance of the nozzle 322 and spray irrigation water; wherein, the end fixed in the inner cavity is the fixed end and the other end is the telescopic end.

[0046] In one possible implementation, the water delivery mechanism 200 includes a water storage tank 210 and a water pump assembly 220;

[0047] The water storage tank 210 is fixedly mounted on the bracket 120, with an opening at the top and a drain outlet at the bottom; the bottom of the water pump assembly 220 has a piston 222 that cooperates with the opening, used to control the piston 222 to move within the opening and adjust the internal pressure of the water storage tank 210.

[0048] Understandably, the water storage tank 210 is used to store irrigation water. Its top opening cooperates with the piston 222 of the pump assembly 220. When the pump assembly 220 controls the piston 222 to move within the opening, it can change the air pressure inside the water storage tank 210, thereby pushing the irrigation water in the water storage tank 210 from the bottom drain to the outlet, providing power for subsequent spraying.

[0049] Optionally, the upper part of the water storage tank 210 has a water inlet 211.

[0050] Furthermore, the pump assembly 220 also includes: a fixing frame 221, a first screw 223, a planetary gear transmission component, and a first motor 229;

[0051] The fixing frame 221 is fixedly connected to the bracket 120, has a through hole in the middle of the bottom surface, an upward connecting plate on the edge, and a connecting column at the bottom of the top surface;

[0052] The planetary gear transmission component has a first gear 224, a second gear 226 and a third gear 227. The second gear 226 is sleeved on the connecting column and rotatably connected to the connecting column. The first gear 224 and the third gear 227 mesh with the second gear 226 and are rotatably connected to the fixed frame 221.

[0053] The output end of the first motor 229 is connected to the third gear 227 to drive the third gear 227 to rotate; the first screw 223 is threaded through the first gear 224 and its bottom end is fixedly connected to the top surface of the piston 222.

[0054] It should be noted that the planetary gear transmission component is the core transmission structure of the water pump assembly 220. When the first motor 229 is working, it drives the third gear 227 to rotate. The third gear 227 drives the second gear 226 to rotate through the meshing relationship with the second gear 226. The second gear 226 then drives the first gear 224 to rotate synchronously. Power transmission is achieved through multi-stage gear meshing, which can effectively adjust the transmission efficiency and torque and ensure the stability of piston movement.

[0055] At the same time, there is a sufficient distance between the top of the first screw 223 and the bottom of the top surface of the fixing frame 221, and the first screw 223 also slides through the bottom surface of the fixing frame 221.

[0056] Optionally, the third gear 227 is rotatably connected to the fixed frame 221 through the second connecting pipe 228, and the output end of the first motor 229 is connected to the third gear 227 through the second connecting pipe 228 to drive the third gear 227 to rotate.

[0057] It should be noted that the second connecting pipe 228 provides rotational support for the third gear 227, enabling the third gear 227 to rotate stably around the fixed frame 221 and preventing it from deviating during rotation. On the other hand, as the connection medium between the output end of the first motor 229 and the third gear 227, it can accurately transmit the motor power to the third gear 227, ensuring the continuity of transmission.

[0058] In one possible implementation, the first gear 224 is fixedly connected to the first connecting pipe 225 and rotatably connected to the fixing frame 221 through the first connecting pipe 225. The inner wall of the first connecting pipe 225 has a thread that mates with the first screw 223.

[0059] It should be noted that after the first connecting pipe 225 is fixedly connected to the first gear 224, it rotates synchronously with the first gear 224. The thread on its inner wall meshes with the thread of the first screw 223. When the first connecting pipe 225 rotates, it can convert the rotational motion into the linear motion of the first screw 223, thereby driving the piston 222 to move up and down, realizing the piston movement in the opening of the water storage tank 210, and thus adjusting the internal pressure of the water storage tank 210.

[0060] In one possible implementation, the telescopic spraying mechanism 300 includes: a telescopic component 310 and a spraying component 320;

[0061] The telescopic component 310 has a fixed end and a telescopic end. The fixed end is fixedly disposed in the inner cavity, and the telescopic end extends out of the inner cavity and the extension distance is adjustable.

[0062] One end of the spraying component 320 is connected to the water outlet, and the other end is fixed to the telescopic end of the telescopic component 310.

[0063] It should be noted that the fixed end of the telescopic component 310 is fixed in the inner cavity to provide stable support for the overall telescopic movement. The extension distance of the telescopic end can be adjusted according to the needs of the seedling position. The spray component 320, through communication with the water outlet, can guide the irrigation water delivered by the water conveying mechanism 200 to the nozzle 322. The two work together to achieve precise irrigation at different positions and distances.

[0064] Furthermore, the telescopic assembly 310 includes an opening / closing component 311, a scissor bracket 312, and a sliding groove component 313;

[0065] The opening and closing component 311 is disposed in the inner cavity. Two connecting parts at one end of the scissor frame 312 are connected to the opening and closing component 311. The opening and closing of the scissor frame 312 is controlled by the opening and closing of the opening and closing component 311. The sliding groove component 313 has a sliding groove. Two connecting parts at the other end of the scissor frame 312 are slidably disposed in the sliding groove.

[0066] It is understandable that the opening and closing component 311, as the driving component of the telescopic assembly 310, directly controls the telescopic state of the scissor frame 312 through its opening and closing action; the scissor frame 312 achieves length change through its own folding and unfolding, thereby adjusting the extension distance of the telescopic end; the sliding groove of the sliding groove component 313 plays a guiding and limiting role in the movement of the connecting part at the other end of the scissor frame 312, ensuring that the telescopic process of the scissor frame 312 is smooth and without jamming.

[0067] Optionally, the opening / closing member 311 includes: a second screw 3111 and an opposing moving member 3112;

[0068] The second screw 3111 has a limiting block in the middle section, and the front and rear sections have opposite threads respectively; the opposing moving part 3112 is composed of two fixing blocks with the same internal thread through holes, which are threadedly connected to the front and rear sections of the second screw 3111 respectively; the two connecting parts at one end of the scissor bracket 312 are connected to the opposing moving part 3112.

[0069] Understandably, the limiting block in the middle section of the second screw 3111 can limit the maximum movement distance of the two opposing moving parts 3112, preventing them from getting too close or too far apart and causing structural damage. Since the threads of the front and rear sections of the second screw 3111 are opposite, when the second screw 3111 rotates, the two opposing moving parts 3112 will move towards or away from each other, thereby driving the connecting part at one end of the scissor frame 312 to move synchronously, realizing the telescopic adjustment of the scissor frame 312.

[0070] In one possible implementation, the spraying assembly 320 includes a water supply pipe 321 and a nozzle 322; the nozzle 322 is connected to the water outlet through the water supply pipe 321, and the nozzle 322 is fixedly installed at the telescopic end of the telescopic assembly 310.

[0071] Understandably, the water supply pipe 321 serves to connect the water outlet of the water supply mechanism 200 to the nozzle 322, and can stably deliver irrigation water to the nozzle 322. The nozzle 322 is fixed to the telescopic end of the telescopic component 310, and can adjust the spraying position according to the position of the telescopic end. At the same time, the nozzle 322 can atomize or disperse the irrigation water to improve the uniformity of irrigation and ensure that the roots or surrounding soil of tobacco seedlings are fully moistened.

[0072] Optionally, the nozzle 322 has multiple spray sections, which are respectively located at the hinge of the scissor frame 312, and each spray section can be connected to the others via a hose.

[0073] Understandably, the multiple spray sections of the sprinkler head 322 are located at the hinge of the scissor frame 312, and their positions can be adjusted synchronously with the extension and retraction of the scissor frame 312. When the scissor frame 312 extends or retracts, each spray section can be distributed at different extension distances, thereby expanding the irrigation coverage and adapting to the irrigation needs of different growth stages or different spacings of tobacco seedlings. Each spray section is connected by a flexible hose, which can adapt to the rotation and extension deformation of the hinge of the scissor frame 312, ensuring that irrigation water can be stably delivered to each spray section during the movement of the scissor frame 312, ensuring continuous and normal spraying of each spray section, and improving the uniformity and reliability of irrigation.

[0074] Working principle:

[0075] First, irrigation water is injected into the water storage tank 210 through the water inlet 211 at the top of the tank, completing the irrigation preparation. When irrigation is needed, the water delivery mechanism 200 starts working: the first motor 229 outputs power, which is transmitted to the third gear 227 through the second connecting pipe 228, driving the third gear 227 to rotate around the fixed frame 221; the third gear 227 meshes with the second gear 226, driving the second gear 226 to rotate synchronously, and the second gear 226 then drives the first gear 224, which meshes with it, to rotate. Since the first gear 224 is fixedly connected to the first connecting pipe 225, the first connecting pipe 225 rotates with the first gear 224, and its inner wall thread meshes with the first screw 223, converting the rotational motion into the linear motion of the first screw 223, which in turn drives the piston 222 to move downward. The piston moves downward within the opening at the top of the water storage tank 210, compressing the internal space of the water storage tank 210 and increasing the internal air pressure. This causes the irrigation water in the water storage tank 210 to be forced out from the bottom drain to the outlet under the action of air pressure.

[0076] Simultaneously, the telescopic spraying mechanism 300 adjusts the position of the nozzle 322 according to the seedling location requirements: the second screw 3111 of the opening / closing component 311 rotates under power drive (which can be driven by the second motor 314). Since the front and rear threads of the second screw 3111 are opposite, the two opposing moving parts 3112 move in opposite directions or away from each other along the screw, causing the two connecting parts at one end of the scissor frame 312 to move synchronously. The scissor frame 312 adjusts its length by folding or unfolding, and the two connecting parts at its other end slide along the groove of the sliding part 313 to adjust the extension distance of the telescopic end. The nozzle 322 fixed at the telescopic end moves synchronously to the target position with the telescopic end.

[0077] Finally, the irrigation water discharged from the outlet of the water conveying mechanism 200 is transported to the nozzle 322 through the water conveying pipe 321. If the nozzle 322 has multiple spraying parts, the irrigation water flows between the spraying parts through the hose. The multiple spraying parts are distributed at the hinge position of the scissor frame 312, atomizing or dispersing the irrigation water to the roots of the tobacco seedlings or the surrounding soil to complete precise irrigation.

[0078] During irrigation, the first motor 229 rotates forward and reverse periodically, driving the first screw 223 to move up and down through the planetary gear transmission component, and continuing the piston reciprocating motion to continuously carry out irrigation.

[0079] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0081] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, references to terms such as "one possible implementation," "further," "exemplary," "specific example," or "optional," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0084] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention filed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A tobacco seedling raising irrigation device for tobacco planting, characterized by, include: A base mechanism includes a base and a support, wherein the support is fixedly mounted on the base, and the base has an inner cavity in the middle. The water conveying mechanism is mounted on the base via the bracket, and has a water outlet at the bottom for storing irrigation water and for squeezing the irrigation water out of the water outlet by air pressure. The telescopic spraying mechanism has one end fixedly installed in the inner cavity and the other end having a nozzle communicating with the water outlet, used to extend and adjust the distance the nozzle extends and spray irrigation water; wherein, the end fixed in the inner cavity is the fixed end and the other end is the telescopic end.

2. The tobacco planting and seedling irrigation equipment according to claim 1, characterized in that, The water conveying mechanism includes a water storage tank and a water pump assembly; The water storage tank is fixedly mounted on the bracket, with an opening at the top and a drain outlet at the bottom; the bottom of the pump assembly has a piston that cooperates with the opening, used to control the piston to move within the opening and adjust the internal pressure of the water storage tank.

3. The tobacco seedling irrigation device according to claim 2, wherein, The pump assembly also includes: a fixed frame, a first screw, a planetary gear transmission component, and a first motor; The fixing frame is fixedly connected to the bracket, has a through hole in the middle of the bottom surface, an upward connecting plate on the edge, and a connecting column at the bottom of the top surface; The planetary gear transmission component has a first gear, a second gear and a third gear. The second gear is sleeved on the connecting column and rotatably connected to the connecting column. The first gear and the third gear mesh with the second gear and are rotatably connected to the fixed frame. The output end of the first motor is connected to the third gear to drive the third gear to rotate; the first screw threadedly passes through the first gear, and its bottom end is fixedly connected to the top surface of the piston.

4. The tobacco seedling irrigation device according to claim 3, wherein, The third gear is rotatably connected to the fixed frame through the second connecting pipe, and the output end of the first motor is connected to the third gear through the second connecting pipe to drive the third gear to rotate.

5. The tobacco seedling irrigation device of claim 3, wherein, The first gear is fixedly connected to the first connecting pipe and rotatably connected to the fixed frame through the first connecting pipe. The inner wall of the first connecting pipe has a thread that mates with the first screw.

6. The tobacco seedling irrigation device of claim 1, wherein, The telescopic spraying mechanism includes: a telescopic component and a spraying component; The telescopic component has a fixed end and a telescopic end. The fixed end is fixedly disposed in the inner cavity, and the telescopic end extends out of the inner cavity, with an adjustable extension distance. One end of the spraying component is connected to the water outlet, and the other end is fixed to the telescopic end of the telescopic component.

7. The tobacco seedling irrigation device of claim 6, wherein, The telescopic assembly includes an opening and closing component, a scissor bracket, and a sliding groove component; The opening and closing component is disposed in the inner cavity. Two connecting parts at one end of the scissor frame are connected to the opening and closing component. The opening and closing of the scissor frame controls the extension and retraction of the scissor frame. The sliding groove component has a sliding groove. Two connecting parts at the other end of the scissor frame are slidably disposed in the sliding groove.

8. The tobacco planting and seedling irrigation equipment according to claim 7, characterized in that, The opening and closing component includes: a second screw and an opposing moving component; The second screw has a limiting block in the middle section, and the front and rear sections have opposite threads respectively; the opposing moving parts are composed of two fixing blocks with the same internal thread through holes, which are threadedly connected to the front and rear sections of the second screw respectively; the two connecting parts at one end of the scissor bracket are connected to the opposing moving parts.

9. The tobacco seedling irrigation device of claim 6, wherein, The spraying assembly includes a water supply pipe and a nozzle; the nozzle is connected to the water outlet through the water supply pipe, and the nozzle is fixedly installed at the telescopic end of the telescopic assembly.

10. The tobacco seedling raising irrigation apparatus according to claim 2, wherein The water storage tank has a water inlet at the top.

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