A three-dimensional modular crop cultivation device

Abstract

This utility model relates to a three-dimensional modular crop cultivation device, comprising: a bottom structure, a top structure, and a middle cultivation structure. The middle cultivation structure includes: a cylindrical cultivation frame with its two ends connected to the bottom and top structures, respectively; a cylindrical rotating sleeve fitted onto the outer circumference of the cylindrical cultivation frame and rotatable around the axis of the cultivation frame; multiple plant cultivation units distributed along the circumference of the rotating sleeve and detachably connected to the outer wall of the rotating sleeve via a pin-slot fitting structure; a liquid delivery pipeline located inside the cylindrical cultivation frame, including a central liquid supply pipe and multiple branch pipes; and multiple liquid output components connected to the branch pipes and located above the corresponding plant cultivation units, wherein the liquid output components are downward-facing micro-nozzles. The bottom structure contains a liquid storage component and an irrigation drive device, which are connected to the liquid delivery pipeline and the liquid output components, respectively.

Description

Technical Field

[0001] This utility model relates to the field of cultivation technology, and in particular to a three-dimensional modular crop cultivation device. Background Technology

[0002] With the continuous advancement of urbanization, residents' living arrangements have undergone significant changes, shifting from traditional bungalows to high-rise apartments. This transformation makes it difficult for residents to grow vegetables in their daily lives, forcing them to rely mainly on purchasing vegetables from outside sources. This increases household costs and also leads to a lack of control over the source and quality of vegetables, particularly making it difficult to obtain healthy, pesticide-free produce. Furthermore, agricultural knowledge and experience are gradually being lost due to intergenerational gaps, with children lacking direct understanding of crop cultivation habits, further widening the agricultural knowledge gap between urban and rural areas.

[0003] While some home vegetable growing products exist and can meet residents' daily self-sufficiency needs to a certain extent, they still have many shortcomings. For example, these products typically use a fixed structure that cannot be disassembled, resulting in low space utilization efficiency and poor flexibility in home arrangement. Furthermore, the multi-layered structure often leads to light obstruction issues, with upper cultivation units blocking sunlight for lower plants, causing poor growth and directly impacting planting results and yield. In addition, most existing products rely on manual operation for watering and fertilizing, requiring users to walk around the growing rack to complete various management tasks. This is not only cumbersome and time-consuming but also inconvenient for children or users lacking planting experience. Some products lack storage space, making it difficult to organize planting tools and affecting the tidiness of the living space.

[0004] Therefore, there is an urgent need to provide a vertical modular crop cultivation device that is structurally sound, highly modular, has optimized lighting conditions, is easy to operate, has complete storage functions, and can adapt to various home environments, so as to better meet the needs of families for green and healthy living and help to popularize agricultural knowledge and pass it on to future generations. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a three-dimensional modular crop cultivation device, comprising: a bottom structure, a top structure, and at least one central cultivation structure disposed between the bottom structure and the top structure, wherein the central cultivation structure includes: a cylindrical cultivation frame, with its two ends respectively connected to the bottom structure and the top structure; at least one cylindrical rotating sleeve, fitted onto the outer circumference of the cylindrical cultivation frame and rotatable around the axis of the cultivation frame; and multiple plant cultivation units distributed along the circumference of the rotating sleeve and engaged by insert-slot connections. The structure is detachably connected to the outer wall of the rotating sleeve; the liquid delivery pipeline is located inside the cylindrical cultivation rack, including a central liquid supply pipe and multiple branch pipes; multiple liquid output components are respectively connected to the branch pipes and located above the corresponding plant cultivation units. The liquid output components are downward-facing micro-nozzles with their nozzles facing the planting area of ​​the corresponding plant cultivation unit for spraying liquid; wherein, the bottom structure is provided with a liquid storage component and an irrigation drive device, which are respectively connected to the liquid delivery pipeline and the liquid output components to form a through liquid supply channel.

[0006] In one possible implementation, the rotating sleeve is supported by a bearing assembly disposed on the cylindrical culture rack and is rotatable about an axis relative to the cylindrical culture rack.

[0007] In one possible implementation, the plant cultivation unit is mounted on the outer wall of the rotating sleeve via a post-slot connection structure, wherein the post is located on the back of the plant cultivation unit and the slot is located on the outer wall of the rotating sleeve.

[0008] In one possible implementation, the insertion post is provided with an outwardly ejectable limiting flange, which is positioned by a snap-lock stop after being inserted into the slot.

[0009] In one possible implementation, the top structure is provided with a smart touch screen panel for displaying plant growth parameters including temperature, humidity, and light intensity.

[0010] In one possible implementation, the smart touchscreen panel is communicatively connected to a mobile terminal application for uploading plant growth parameters and receiving planting management instructions.

[0011] In one possible implementation, the liquid output component is an atomizing micro-nozzle with a porous liquid outlet structure and a downward-pointing conical spray angle.

[0012] In one possible implementation, the bottom structure includes a pull-out storage drawer and multiple casters, which are mounted to the bottom structure by nuts.

[0013] In one possible implementation, the central cultivation structure includes multiple central cultivation structure units, which are connected end to end to form an expandable integrated structure; wherein, the liquid delivery pipeline is provided with a connecting joint between adjacent central cultivation structure units to achieve continuous connection of the liquid supply channel.

[0014] In one possible implementation, the central cultivation structure units are connected by a docking ring and a snap-fit ​​mechanism, and each unit is provided with a positioning boss and a flow guide interface at both ends to ensure structural stability and liquid channel sealing.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] Based on the above technical solution, the three-dimensional modular crop cultivation device of the present invention, by setting multiple interconnectable middle cultivation structure units between the bottom and top structures, and configuring a rotating sleeve rotatable around the central axis in the middle cultivation structure, combined with detachable plant cultivation units and an internally connected liquid delivery system, realizes a three-dimensional, modular, and highly automated plant cultivation method. This not only significantly improves the utilization rate of vertical space but also allows for precise control of the irrigation process using atomizing micro-sprinklers. Furthermore, it enables real-time monitoring and remote management of plant growth parameters through a smart touch panel and mobile terminal, effectively solving the shortcomings of existing planting devices in terms of irrigation efficiency, structural scalability, and intelligent control. Therefore, there is an urgent need to provide a vertical modular crop cultivation device with a reasonable structure, high modularity, optimized lighting conditions, convenient operation, complete storage functions, and adaptability to diverse home environments to meet the needs of green and healthy family living and to assist in the popularization and intergenerational transmission of agricultural knowledge. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the three-dimensional modular crop cultivation device provided in this embodiment of the utility model;

[0019] Figure 2 for Figure 1 A sectional view;

[0020] Figure 3 for Figure 1 Top view.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100-Bottom structure; 110-Liquid storage component; 120-Irrigation drive device; 130-Pull-out storage drawer; 140-Wheel casters; 200-Top structure; 210-Intelligent touch screen panel; 300-Middle cultivation structure; 310-Cylindrical cultivation rack; 320-Rotating sleeve; 330-Plant cultivation unit; 331-Insertion column; 340-Liquid delivery pipeline; 350-Liquid output component; 360-Flow guide interface. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] 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.

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] Figure 1 A schematic diagram of the structure of the three-dimensional modular crop cultivation device provided in this embodiment of the utility model; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 1 Top view.

[0028] Please see Figure 1-3 In one possible implementation, the three-dimensional modular crop cultivation device includes: a bottom structure 100, a top structure 200, and at least one middle cultivation structure 300 disposed between the bottom structure 100 and the top structure 200. The middle cultivation structure 300 includes a cylindrical cultivation rack 310, with its two ends connected to the bottom structure 100 and the top structure 200 respectively; at least one cylindrical rotating sleeve 320 is fitted onto the outer circumferential surface of the cylindrical cultivation rack 310 and can rotate around the axis of the cultivation rack; multiple plant cultivation units 330 are distributed along the circumferential direction of the rotating sleeve 320 and are detachably connected to the outer wall of the rotating sleeve 320 via a pin-slot mating structure; and a liquid delivery pipeline 340 is disposed inside the cylindrical cultivation rack 310. It includes a central liquid supply pipe and multiple branch pipes; multiple liquid output components 350 are respectively connected to the branch pipes and located above the corresponding plant cultivation unit 330. The liquid output component 350 is a downward-facing micro-nozzle with its nozzle facing the planting area of ​​the corresponding plant cultivation unit 330 for spraying liquid; wherein, the bottom structure 100 is provided with a liquid storage component 110 and an irrigation drive device 120, which are respectively connected to the liquid delivery pipe 340 and the liquid output component 350 to form a through liquid supply channel.

[0029] The cylindrical cultivation rack 310 serves as the main load-bearing component, connecting the bottom structure 100 and the top structure 200 to ensure overall stability. The cylindrical rotating sleeve 320, through its support and rotational engagement with the cultivation rack, can rotate around its axis, allowing the plant cultivation units 330 in different positions to be adjusted according to light requirements or maintenance needs. This also facilitates targeted watering by the user. The plant cultivation units 330 are installed on the outer wall of the rotating sleeve 320 via a pin-slot fitting structure, facilitating installation and disassembly, as well as changing crop types or performing maintenance. Liquid delivery pipelines 340 are arranged inside the cylindrical cultivation rack 310. The central supply pipe distributes liquid to multiple branch pipelines, which then deliver the liquid to corresponding micro-sprinklers. The micro-sprinkler nozzles are positioned directly over the plant planting area for targeted spraying, improving irrigation efficiency. The liquid storage component 110 of the bottom structure 100 stores nutrient solution or water, and the irrigation drive device 120 (such as a water pump) provides pressure to transport the liquid along the supply channel to the upper part, thereby achieving a closed and continuous liquid circulation supply.

[0030] This structure provides a multi-layered, adjustable plant cultivation environment within a limited space, significantly increasing the planting density per unit area. The rotating sleeve 320 allows for flexible adjustment of the orientation of each plant unit to adapt to different light conditions and promote balanced plant growth. The detachable connection of the insert 331-slot simplifies assembly and maintenance, reducing equipment downtime. The liquid delivery system is integrated into the cultivation rack, reducing the space occupied by external piping and minimizing the risk of leakage. The integrated bottom liquid storage and drive system facilitates centralized management and control, enabling automated irrigation, improving irrigation uniformity and water-saving efficiency, and reducing manual operation.

[0031] In the above embodiments, the cylindrical cultivation rack 310 can be made of stainless steel, aluminum alloy, or high-strength engineering plastics to adapt to different usage environments and cost requirements. The rotating sleeve 320 can be made of lightweight, corrosion-resistant materials, such as PVC or glass fiber reinforced plastic, to reduce weight and extend service life. In addition to micro-sprinklers, the liquid output component 350 can be replaced with drip irrigation heads or atomizing nozzles to adapt to the water requirements of different crops. The irrigation drive device 120 can be an electric water pump or a pneumatic pump. The liquid storage component 110 can be a detachable water tank or a fixed liquid storage container, and can integrate a liquid level sensor and a filter device.

[0032] Please see Figure 2 In one possible implementation, the rotating sleeve 320 is supported by a bearing assembly disposed on the cylindrical culture rack 310 and is rotatable about an axis relative to the cylindrical culture rack 310.

[0033] This embodiment utilizes a bearing assembly between the cylindrical cultivation rack 310 and the rotating sleeve 320, enabling the rotating sleeve 320 to rotate relative to the cylindrical cultivation rack 310 under low friction. The bearing assembly is mounted on the outer circumferential surface of the cylindrical cultivation rack 310 and forms a supporting fit with the inner surface of the rotating sleeve 320, stably supporting the weight of the rotating sleeve 320 and the multiple plant cultivation units 330 connected to it, while reducing rotational resistance and improving rotational flexibility. To adapt to the crop cultivation environment, the bearing assembly can be used with sealing rings or dust covers to prevent moisture, nutrient solution, or dust from entering the bearing, thereby maintaining long-term stable operation.

[0034] Supported by the bearing assembly, the rotating sleeve 320 rotates more smoothly, requiring less operating force. This facilitates manual or automatic adjustment of the orientation of multiple plant cultivation units 330 to adapt to different light conditions. This structure effectively supports the weight of the plant cultivation units 330 and the planting medium, preventing jamming or swaying due to excessive load, reducing wear, extending the overall machine's lifespan, and lowering maintenance frequency. The matching sealing structure enhances protection, preventing bearing failure in high humidity or sprinkler irrigation environments.

[0035] The bearing assembly can be a deep groove ball bearing, needle roller bearing, or sliding bearing, with the specific type selected based on the mass, size, and frequency of use of the rotating sleeve 320. The bearing housing can be made of stainless steel, aluminum alloy, or high-strength engineering plastic and can be fixed to the cylindrical cultivation rack 310 by screws, clamps, or welding. For cost-sensitive applications, the bearing assembly can be replaced with a wear-resistant bushing, and grease or a PTFE coating can be applied to the contact surfaces to reduce frictional resistance. In environments with high humidity or direct spraying, fully enclosed stainless steel bearings or bearings with waterproof seals can be used to enhance corrosion resistance and water resistance.

[0036] Please see Figure 2 In one possible implementation, the plant cultivation unit 330 is mounted on the outer wall of the rotating sleeve 320 via a post 331-slot connection structure, with the post 331 located on the back of the plant cultivation unit 330 and the slot located on the outer wall of the rotating sleeve 320.

[0037] In this embodiment, the insert 331-slot connection structure is used to achieve detachable fixation between the plant cultivation unit 330 and the rotating sleeve 320. The insert 331 extends from the back of the plant cultivation unit 330 along the installation direction and inserts into a slot provided on the outer wall of the rotating sleeve 320. The shape and size of the insert 331 and the slot ensure stable positioning. This structure not only ensures that the plant cultivation unit 330 does not loosen under rotation or external force, but also allows for quick disassembly by pulling out the insert 331 when replacement or maintenance is needed. The gap between the insert 331 and the slot is controlled within the appropriate range to ensure smooth installation and secure fixation.

[0038] By employing a pin-slot connection method (331-slot connection), the installation and disassembly process of the plant cultivation unit 330 is significantly simplified, eliminating the need for additional fasteners and reducing assembly time and maintenance costs. This structure is suitable for plant cultivation units 330 of various sizes and shapes, enhancing the versatility and expandability of the device. Due to the high precision of the mechanical fit at the connection point, the plant cultivation unit 330 remains stable during use, preventing tilting or falling, thus ensuring a normal growth environment for the plants.

[0039] The insert 331 can be made into a cylindrical, square, or wedge-shaped structure to adapt to different installation strength requirements. An elastic bushing or rubber buffer ring can be installed inside the slot to improve the shock resistance of the connection and reduce wear caused by long-term use. The materials for the insert 331 and the slot can be stainless steel, aluminum alloy, or weather-resistant engineering plastics, with the choice of materials offering higher corrosion resistance and wear resistance depending on environmental conditions. For applications requiring frequent replacement of the plant cultivation unit 330, a guide ramp can be added inside the slot to facilitate quick alignment and installation of the insert 331.

[0040] In one possible implementation, the insert 331 is provided with an outwardly ejectable limiting flange, which is positioned by a snap-lock stop after being inserted into the slot.

[0041] The insertion post 331 has an elastic structure machined in its middle or end, on which an outwardly protruding limiting flange is formed. During installation, the insertion post 331 is radially inserted into the slot on the outer wall of the rotating sleeve 320. After the insertion post 331 is fully inserted into the slot, the limiting flange automatically pops outward under the action of elastic force, locking onto the stop portion of the slot, thus locking the insertion post 331 in place. This design utilizes the mechanical interference between the flange and the edge of the slot to prevent the insertion post 331 from loosening under gravity or rotational vibration. During disassembly, the locking flange can be released by pressing it or using a special tool to push it back, allowing the insertion post 331 to be easily pulled out for quick replacement or maintenance.

[0042] By incorporating a snap-fit ​​positioning structure with a limiting flange, the connection stability between the plant cultivation unit 330 and the rotating sleeve 320 is significantly improved, preventing the unit from loosening or falling off due to rotation or external impact. Simultaneously, this structure eliminates the need for additional screws or fasteners, reducing assembly steps and maintenance costs. The flexible snap-fit ​​design allows for one-handed operation, facilitating quick installation and disassembly, and improving ease of use and work efficiency.

[0043] In the above solutions, the limiting flange can take different forms, such as metal springs, plastic elastic claws, or rubber-coated parts, to adapt to different stress and durability requirements. The shape of the limiting flange can be annular, semi-annular, symmetrical double-claw, or single-sided protrusion to meet the needs of different spatial layouts and assembly directions. The elastic component can be made of stainless steel springs, polyoxymethylene (POM) elastic components, or soft silicone materials to improve fatigue resistance and corrosion resistance. In addition, the stop structure of the slot can also be designed as a stepped, grooved, or internally protruding type as needed, thereby achieving different snap-fit ​​positioning effects with different strengths and tactile sensations.

[0044] Please see Figure 1-3 In one possible implementation, the top structure 200 is provided with a smart touch screen panel 210 for displaying plant growth parameters including temperature, humidity, and light intensity.

[0045] The intelligent touchscreen panel 210 integrated on the top structure 200 is electrically connected to the internal sensor system of the device. The sensors collect key growth parameters such as temperature, humidity, and light intensity in the planting environment in real time and transmit the signals to the control module. After processing and analyzing the data, the control module displays the values ​​and status information on the touchscreen in real time. Users can view detailed information on various environmental parameters through touch operation, or enter the menu interface to set warning thresholds and control strategies. The touchscreen not only serves as an information display terminal but also as a human-machine interface, providing users with an intuitive management operation entry point.

[0046] By integrating a smart touchscreen into the top structure 200, users can directly obtain complete environmental parameter information on the device itself, eliminating the need for additional testing instruments. The touchscreen's graphical interface enhances the intuitiveness of parameter viewing and the convenience of interactive operation, helping to accurately control the crop's growth environment. Real-time data display helps users take timely measures when environmental parameters are abnormal, reducing the risk of crop loss. Meanwhile, the top installation position facilitates observation and operation without affecting the layout of the central cultivation structure 300.

[0047] In the above solutions, the touchscreen panel can be selected in different specifications, such as 5 inches, 7 inches, or larger, to adapt to different information display needs. The screen type can be capacitive, infrared, or resistive, meeting different usage environments and cost requirements. The displayed content can be expanded to include more parameters such as carbon dioxide concentration, airflow rate, and nutrient solution pH value. For complex lighting conditions or outdoor use, high-brightness, waterproof, and dustproof industrial-grade touchscreens can be selected. The screen can be installed in an embedded, surface-mount, or flip-up configuration to optimize viewing angles and ease of maintenance.

[0048] In one possible implementation, the smart touch screen panel 210 is communicatively connected to a mobile terminal application for uploading plant growth parameters and receiving planting management instructions.

[0049] The smart touchscreen panel 210 has a built-in wireless communication module (such as Wi-Fi, Bluetooth, 4G / 5G, or LoRa) that establishes a stable data connection with the mobile terminal's application (APP). Plant growth parameters collected internally are processed and uploaded in real-time to a cloud server or directly to the user's mobile terminal APP via the communication module. Users can remotely view real-time environmental data, historical data curves, and alarm information in the APP, and can issue planting management commands such as adjusting irrigation frequency, controlling light duration, or changing environmental thresholds. After receiving commands from the mobile terminal, the touchscreen drives the relevant actuators through the control module to complete the operation, thus achieving both remote and local control of the device.

[0050] Through communication with a mobile app, users can monitor plant growth anytime, anywhere, significantly improving management flexibility and timeliness. Remote control reduces the frequency of on-site operations, making it particularly suitable for centralized management of multiple devices or large-scale vertical farming scenarios. Cloud storage and analysis of data provide a reliable basis for precision farming, helping to optimize irrigation, fertilization, and lighting strategies, thereby improving crop yield and quality. Furthermore, the solution is scalable, capable of supporting more functions through software upgrades.

[0051] In the above solutions, different technologies can be selected for communication based on the usage environment and distance requirements. For example, Bluetooth or Wi-Fi Direct can be used for short-range indoor applications, while 4G / 5G cellular networks or LoRa Low Energy Wide Area Networks can be used for long-range transmission in greenhouses or farms. The app can support multi-user login, hierarchical permission management, and voice control interfaces to accommodate different user groups. To improve data security, encryption algorithms (such as AES or RSA) can be introduced during data transmission. In addition, communication between the touchscreen and the mobile terminal can also be achieved through wired interfaces (such as USB or Ethernet) to meet the needs of situations with limited network conditions.

[0052] Please see Figure 1-3 In one possible implementation, the liquid output component 350 is an atomizing micro-nozzle with a porous liquid outlet structure and a downward cone-shaped spray angle.

[0053] The atomizing micro-nozzle is installed at the end of the branch pipeline. Through internal micropores and a flow-guiding structure, it decomposes pressurized liquid into fine water mist particles. The nozzle's multi-hole outlet design simultaneously creates atomized jets at multiple micropores, resulting in smaller and more uniform droplet sizes, facilitating even coverage of the liquid on plant leaves and the planting substrate around the roots. The nozzle outlet's guiding structure limits the spray area to a downward, cone-shaped distribution, ensuring the spray is concentrated on the planting area of ​​the corresponding plant cultivation unit 330, reducing liquid drift and waste in the air. By controlling the supply pressure and nozzle size, the spray volume and density can be precisely adjusted to meet the water and nutrient requirements of different crop growth stages.

[0054] The use of atomizing micro-sprinklers significantly improves irrigation uniformity and water use efficiency, avoiding the scouring or water concentration caused by excessively large droplets in traditional sprinklers. Fine mist particles increase leaf surface moisture, promoting nutrient absorption and photosynthesis while reducing water loss and the risk of disease spread. The downward-conical spray angle allows for more precise irrigation, avoiding water mist interference between adjacent units. The porous dispensing structure can cover a larger planting area under the same supply pressure, reducing the number of sprinklers and the complexity of their arrangement.

[0055] In the above scheme, the nozzle diameter of the atomizing micro-nozzle can be selected from different specifications within the range of 0.1 mm to 0.5 mm as needed to adjust the atomization effect. The nozzle material can be made of corrosion-resistant plastics (such as POM, PP) or stainless steel to adapt to changes in nutrient solution composition and environmental humidity. In addition to the conical shape, the spray angle can also be designed as a fan shape, a straight shot, or an adjustable angle structure to adapt to the layout and density requirements of different crops. For high-end applications, atomizing nozzles with anti-drip valves can be used to prevent residual liquid droplets from falling and affecting the plants after the nutrient supply stops.

[0056] Please see Figure 1 , 2 In one possible implementation, the bottom structure 100 includes a pull-out storage drawer 130 and a plurality of casters 140, which are mounted to the bottom structure 100 by nuts.

[0057] A pull-out storage drawer 130, located within the bottom structure 100, slides back and forth along guide rails for storing seeds, nutrient solution supplements, tools, and other items. The drawer is prevented from accidentally sliding out during use by a limiting structure and can be completely removed for cleaning when needed. Casters 140 are installed at the four corners of the bottom or at appropriate locations. The casters 140 are securely connected to the bottom structure 100 with nuts, allowing the device to move freely in multiple directions. Users can easily push or rotate the device to adjust its placement indoors or in a greenhouse, facilitating planting management and space optimization. Some casters 140 may be equipped with a brake to lock the device in place when needed, preventing accidental movement.

[0058] The pull-out storage drawer 130 integrates storage functionality into the unit, improving ease of use and space utilization. Growers can centrally manage related items, reducing time spent searching for tools and materials. The casters 140 significantly enhance the unit's mobility, facilitating position adjustments under varying light, temperature, and humidity conditions, or removal from designated areas for cleaning and maintenance. The nut-secured casters 140 are robust and reliable, allowing for easy replacement or upgrades of the casters later, extending the unit's lifespan.

[0059] In the above solutions, the pull-out storage drawer 130 can be made of different materials, such as ABS plastic, stainless steel, or wood, to meet different durability and cost requirements. The drawer slides can use ball bearing slides to improve smoothness, or concealed slides can be used to optimize the appearance. The casters 140 can be selected in different diameters from 50 mm to 100 mm according to load-bearing requirements, and can be designed for quiet operation, anti-tangling, or wear resistance. In addition to nut fixing, the casters 140 can also be connected using pin locking or a quick-release structure to allow for wheel replacement or modification to fixed feet in different scenarios.

[0060] Please see Figure 1 , 2 In one possible implementation, the central cultivation structure 300 includes multiple central cultivation structure 300 units, which are connected end to end to form an expandable integrated structure; wherein, the liquid delivery pipeline 340 is provided with a docking joint between adjacent central cultivation structure 300 units to achieve continuous connection of the liquid supply channel.

[0061] The entire central cultivation structure 300 consists of multiple modular cultivation unit units. Each unit includes a cylindrical cultivation rack 310, a rotating sleeve 320, a plant cultivation unit 330, and internal liquid delivery pipelines 340. The units are connected end-to-end via mechanical connectors to form a stable overall frame. The liquid delivery pipelines 340 have pre-drilled joints at both ends of each unit, using sealing rings and locking mechanisms to ensure precise connection between the liquid supply pipelines of adjacent units, guaranteeing continuous flow of the nutrient solution throughout the entire system. The modular unit connection method allows users to freely increase or decrease the number of units according to the planting scale, enabling flexible system expansion and layout adjustments.

[0062] The design employs multiple central cultivation structures, with 300 units connected end-to-end, significantly improving the scalability and maintainability of the device. Users can flexibly configure the device length and capacity according to crop type, yield requirements, and space conditions, avoiding excessive initial investment or limited subsequent expansion. The docking joints ensure that the liquid delivery pipeline 340 remains sealed and unobstructed during expansion or disassembly, reducing leakage and uneven liquid supply caused by poor connections. Furthermore, the modular structure facilitates transportation, installation, and replacement of individual units, reducing maintenance difficulty and costs.

[0063] In the above scheme, the length of the 300 units in the central cultivation structure can be designed to be 0.5 meters, 1 meter, or longer, depending on the planting requirements. The sealing method of the docking joint can be O-rings, flat sealing gaskets, or threaded seals to meet the liquid supply requirements of different pressure levels.

[0064] Please see Figure 2 In one possible implementation, the central cultivation structure 300 units are connected by a docking ring and a snap-fit, and each unit is provided with a positioning boss and a flow guide interface 360 ​​at both ends to ensure structural stability and liquid channel sealing.

[0065] The adjacent middle cultivation structure units 300 are quickly connected via a combination of mating rings and snap-fit ​​mechanisms in their mechanical connection. The mating ring is fixed to one end of a unit, while the other unit has a matching snap-fit ​​structure at its end. When the two units are mated, the mating ring engages with the snap-fit ​​and locks at the positioning point, achieving a stable and secure mechanical connection. Each unit has positioning bosses at both ends to ensure precise axial and radial alignment during assembly, preventing structural instability or pipeline misalignment. The flow guide interface 360 ​​of the liquid delivery pipeline 340 is pressed tightly against the corresponding interface of the adjacent unit using a sealing ring, ensuring continuous and sealed liquid supply channels and preventing leakage.

[0066] The use of a docking ring and snap-fit ​​connection method simplifies and speeds up the assembly and disassembly of units, requiring no additional tools and significantly improving on-site installation and maintenance efficiency. Positioning bosses ensure precise mechanical connections, enhance overall operational stability, and reduce loosening caused by vibration or impact. A 360° flow guide interface and sealing structure effectively prevent liquid leakage, ensuring long-term reliable operation of the liquid supply system. This structure also boasts high durability for repeated assembly and disassembly, facilitating the replacement and expansion of modular units.

[0067] In the above solutions, the mating ring can be made of aluminum alloy, stainless steel, or engineering plastics to meet different strength and weight requirements. The snap-fit ​​structure can be a spring-loaded type, a rotary locking type, or a lever-operated type to adapt to different connection strengths and operating habits. The positioning boss can be a circular flange, a triangular guide post, or a dovetail groove structure to further optimize alignment accuracy. In addition to a straight-through type, the 360° flow guide interface can also be designed as a quick-connect type, threaded type, or flange connection to adapt to different pressure ratings and installation conditions. In high-humidity or corrosive environments, metal parts with anti-corrosion coatings or corrosion-resistant plastic parts can be selected to extend service life.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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 the present invention. In this specification, the illustrative expressions of the above terms 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.

[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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 the present invention. In this specification, the illustrative expressions of the above terms 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.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A three-dimensional modular crop cultivation device, comprising: A bottom structure, a top structure, and at least one middle cultivation structure disposed between the bottom structure and the top structure, characterized in that the middle cultivation structure comprises: A cylindrical cultivation rack, with its two ends connected to the bottom structure and the top structure, respectively; At least one cylindrical rotating sleeve is fitted onto the outer circumferential surface of the cylindrical culture rack and is rotatable around the axis of the culture rack; Multiple plant cultivation units are distributed along the circumference of the rotating sleeve and are detachably connected to the outer wall of the rotating sleeve through a pin-slot mating structure. Liquid delivery pipelines are installed inside the cylindrical culture rack, including a central liquid supply pipe and multiple branch pipes; Multiple liquid output components are connected to the branch pipelines and located above the corresponding plant cultivation units. The liquid output components are downward-facing micro-nozzles with their nozzles facing the planting area of ​​the corresponding plant cultivation unit for spraying liquid. The bottom structure includes a liquid storage component and an irrigation drive device, which are connected to the liquid delivery pipeline and the liquid output component, respectively, forming a through-flow liquid supply channel.

2. The three-dimensional modular crop cultivation device according to claim 1, characterized in that, The rotating sleeve is supported by a bearing assembly mounted on the cylindrical culture rack and is rotatable about an axis relative to the cylindrical culture rack.

3. The three-dimensional modular crop cultivation device according to claim 1 or 2, characterized in that, The plant cultivation unit is installed on the outer wall of the rotating sleeve via a post-slot connection structure. The post is located on the back of the plant cultivation unit, and the slot is located on the outer wall of the rotating sleeve.

4. The three-dimensional modular crop cultivation device according to claim 3, characterized in that, The insertion post is provided with an outwardly ejectable limiting flange, which is positioned by a snap-lock stop after being inserted into the slot.

5. The three-dimensional modular crop cultivation device according to any one of claims 1 to 4, characterized in that, The top structure is equipped with a smart touch screen panel for displaying plant growth parameters, including temperature, humidity, and light intensity.

6. The three-dimensional modular crop cultivation device according to claim 5, characterized in that, The smart touch screen panel is connected to a mobile terminal application for uploading plant growth parameters and receiving planting management instructions.

7. The three-dimensional modular crop cultivation device according to any one of claims 1 to 6, characterized in that, The liquid output component is an atomizing micro-nozzle with a porous liquid output structure and a downward cone-shaped spray angle.

8. The three-dimensional modular crop cultivation device according to any one of claims 1 to 7, characterized in that, The bottom structure includes a pull-out storage drawer and multiple casters, which are mounted to the bottom structure with nuts.

9. The three-dimensional modular crop cultivation device according to any one of claims 1 to 8, characterized in that, The central cultivation structure includes multiple central cultivation structure units, which are connected end to end to form an expandable integrated structure. The liquid delivery pipeline is provided with a docking joint between adjacent central cultivation structure units to achieve continuous connection of the liquid supply channel.

10. The three-dimensional modular crop cultivation device according to claim 9, characterized in that, The central cultivation structure units are connected by docking rings and snap fasteners, and each unit has positioning bosses and flow guide interfaces at both ends to ensure structural stability and liquid channel sealing.

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