Stereoscopic hydroponic device for plants

By designing a three-dimensional hydroponic device for plant including positioning rings, fixing mechanisms and planting mechanisms, the problems of loosening and falling off of plants are solved, stable fixation of plants, precise irrigation and water resource recycling are achieved, and the efficiency and environmental performance of the hydroponic system are improved.

CN119924184APending Publication Date: 2025-05-06ZHEJIANG TOYOSHIMA IND GRP CO LTD
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Patent Information

Application Number
CN202510231690.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2025-05-06

AI Technical Summary

Technical Problem

The existing three-dimensional hydroponic devices lack the mechanism to assist in fixing the plants, which causes the plants to loosen, fall off or pour, affecting the neatness and beauty of the planting.

Method used

A plant stereoscopic hydroponic device including a positioning ring, a fixing mechanism and a colonizing mechanism is designed. The planting mechanism can firmly fix the plants through the combination of springs, pull rods and sliding strip openings, and achieve precise irrigation through water supply pipes and water spray holes.

Benefits of technology

It realizes stable fixation of plants, precise irrigation, and recycling of water resources, and improves water resource utilization and system automation and energy-saving and environmentally friendly performance.

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Abstract

The plant three-dimensional water planting device comprises a device body, the device body comprises a water storage tank and a cylinder, a positioning ring arranged on the outer side of the cylinder in a sleeving mode is fixedly installed on the upper surface of the water storage tank, a clamping and fixing mechanism used for fixing the cylinder is arranged on the surface of the positioning ring, and a planting groove is formed in the surface of the cylinder; a field planting mechanism is arranged in the planting groove, and the field planting mechanism comprises a fixing groove formed in the inner bottom wall of the planting groove. According to the plant three-dimensional water planting device, through the arrangement of the field planting mechanism, when a plant is planted, a pull rod is pulled downwards to drive an abutting plate to retract into a fixing groove, then the root of the plant to be planted is inserted into a planting groove, the root hair of the plant enters a cylinder, the pull rod is loosened, and the abutting plate is pushed to move upwards under the action of a spring till a silica gel cushion layer at the upper end of the abutting plate abuts against the plant; therefore, the function of planting plants is achieved. The planting groove has the advantages that the situation that plants in the planting groove fall off and fall down due to loosening is avoided, and a guarantee is provided for subsequent planting work.
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Description

Technical Field

[0001] The present application relates to the technical field of hydroponic devices, and in particular to a three-dimensional hydroponic device for plants. Background Art

[0002] Hydroponics is a convenient, clean and cheap way to grow plants, so it is widely loved by people. Hydroponics uses modern biotechnology to further domesticate ordinary plants and flowers.

[0003] At present, the existing three-dimensional hydroponic devices lack a mechanism for auxiliary fixation of plants in their planting troughs.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when planting plants, the plants are easily loosened and fall off or fall over in the planting troughs, which brings inconvenience to the cultivation work and affects the neatness and aesthetics of the subsequent overall planting of the plants. Summary of the invention

[0005] In order to improve the problem that plants are easily loose and fall off or topple over in the planting trough, the present application provides a three-dimensional hydroponic device for plants.

[0006] The present application provides a three-dimensional hydroponic plant device that adopts the following technical solution:

[0007] A plant three-dimensional hydroponic device comprises a device body, wherein the device body comprises a water storage tank and a cylinder, a positioning ring sleeved on the outer side of the cylinder is fixedly mounted on the upper surface of the water storage tank, a clamping mechanism for fixing the cylinder is arranged on the surface of the positioning ring, a planting groove is opened on the surface of the cylinder, and a planting mechanism is arranged inside the planting groove;

[0008] The planting mechanism comprises a fixing groove provided in the bottom wall of the planting groove, a spring is fixedly connected to the inner bottom wall of the fixing groove, a butt plate is fixedly connected to the upper end of the spring, a sliding strip opening penetrating into the inside of the fixing groove is provided on the surface of the cylinder, a pull rod fixedly connected to the surface of the butt plate is slidably connected to the inner wall of the sliding strip opening, a water supply pipe extending to the inside of the cylinder is embedded on the upper surface of the water storage tank, and a water spray hole is provided on the surface of the water supply pipe;

[0009] A reflux groove is provided on the upper surface of the water tank, a reflux hole connected to the interior of the water tank is provided on the inner bottom wall of the reflux groove, a filter screen is provided inside the reflux groove, a circulating water pump is embedded on the right side of the water tank, the water pumping end of the circulating water pump is connected to the interior of the water tank, and the water outlet end of the circulating water pump extends to the interior of the water supply pipe.

[0010] By adopting the above technical scheme, a multifunctional and efficient circulating three-dimensional hydroponic technical function is realized, including convenient adjustment of the planting status of the plants through the planting mechanism composed of springs and pull rods, the positioning ring and the clamping mechanism ensure the stability of the cylinder, the water supply pipe and the water spray hole realize precise irrigation, and the return trough and the filter net cooperate with the circulating water pump to complete the recovery and filtration of water resources, thus forming an efficient hydroponic device integrating plant fixation, precise irrigation, wastewater recovery and recycling, which is suitable for the three-dimensional planting needs of multi-level and multi-variety plants, and at the same time effectively improves the utilization rate of water resources, and enhances the automation and energy-saving and environmental protection performance of the hydroponic system.

[0011] Optionally, a silica gel pad is provided at one end of the abutment plate extending into the planting groove.

[0012] By adopting the above technical solution, the setting of the silicone cushion layer can play a protective role when the support plate is against the plant.

[0013] Optionally, a guide slide block is provided on the surface of the abutment plate, and a guide slide groove for the guide slide block to slide is provided on the inner wall of the fixing groove.

[0014] By adopting the above technical solution, under the guiding action of the guide slider, the stop plate can be smoothly guided and moved up and down in the fixed groove.

[0015] Optionally, there are a plurality of planting grooves and a plurality of water spray holes, and the plurality of planting grooves and water spray holes are arranged in a circular array on the surface of the cylinder and the water supply pipe respectively.

[0016] By adopting the above technical solutions, the technical functions of multi-point uniform irrigation and efficient three-dimensional planting are realized. Several planting troughs and water spray holes are distributed in a circular array on the surface of the cylinder and the water supply pipe, which can maximize the use of the cylinder space, support the simultaneous planting and precise irrigation of multiple plants, and improve the planting density and irrigation efficiency; the planting mechanism inside the planting trough is convenient for the stable fixation of the plants, and the water spray holes ensure that the irrigation water is evenly distributed to each planting trough to ensure the healthy growth of the plants; combined with the return trough, filter net and circulating water pump, the efficient recovery and recycling of irrigation water is realized, which greatly reduces water consumption and achieves the purpose of water saving and environmental protection. The overall design integrates the functions of efficient planting, precise irrigation and resource recycling, which is suitable for the three-dimensional hydroponic needs of multiple varieties of plants, and significantly improves the planting efficiency and system automation level.

[0017] Optionally, the fixing mechanism includes mounting frames respectively embedded in both sides of the positioning ring, a rotating opening is formed through the surface of the mounting frame on one side away from the positioning ring, a threaded rod is rotatably connected to the inner wall of the rotating opening, a fixed sleeve is threadedly connected to the surface of the threaded rod, limiting chamfers are provided at the opposite ends of the two fixed sleeves, and an annular groove matching the limiting chamfer is formed on the lower end surface of the cylinder.

[0018] By adopting the above technical solution, the cylinder body can be fixed above the water tank through the arrangement of the fixing sleeve and the annular groove.

[0019] Optionally, the front and back sides of the fixed sleeve are both provided with limit sliding blocks, and the inner front wall and the inner rear wall of the installation frame are both provided with limit sliding grooves for the limit sliding blocks to slide.

[0020] By adopting the above technical solution and providing a limit slider, the fixed sleeve can be moved in a directional manner through the rotation of the threaded rod under the guiding action of the limit slider.

[0021] Optionally, a filling port and a drain pipe are respectively provided on the upper surface and the back surface of the water storage tank, and the upper end of the filling port is threadedly connected to a sealing cover.

[0022] By adopting the above technical solution, efficient and convenient water replenishment and discharge functions are achieved. The filling port set on the upper surface of the water tank is convenient for operators to quickly add irrigation water. At the same time, the filling port is connected to the sealing cover through a thread to ensure the sealing after water replenishment to prevent water evaporation or impurities from entering; the drain pipe set on the back can effectively guide the discharge of excess or waste water, facilitate the cleaning and maintenance of the device, and avoid water accumulation affecting the hydroponic effect. The coordinated design of the filling port and the drain pipe not only improves the convenience of operation of the hydroponic system, but also improves the efficiency of water resource management, meets the needs of rapid water replenishment, regular drainage and cleaning and maintenance during the hydroponic process, and adapts to diverse planting environments.

[0023] Optionally, four universal wheels arranged in a circular array are mounted on the lower surface of the water tank.

[0024] By adopting the above technical solution and setting the universal wheels, the transportation of the hydroponic device is facilitated.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When planting plants, pull the pull rod down to drive the support plate to retract into the fixed groove, and then insert the roots of the plants to be planted into the planting groove and make their roots enter the inside of the cylinder. At this time, release the pull rod and push the support plate up under the action of the spring until the silicone pad at its upper end presses against the plant, thereby achieving the effect of planting the plants and preventing the plants in the planting groove from falling off or tipping over due to loosening, providing protection for its subsequent planting work.

[0027] 2. During hydroponic irrigation, the operation of the circulating water pump pumps the nutrient water in the water tank into the water supply pipe and sprays it out through a number of spray holes, thereby irrigating the roots of the plants in the cylinder. During this period, the excess water flows back into the water tank through the return groove and the return hole. The returned nutrient water can be filtered and processed under the action of the filter net for subsequent recycling, thereby improving the environmental protection of the device.

[0028] 3. When the filter needs to be replaced or cleaned, rotate the threaded rod. Under the guidance of the limit slider, the fixed sleeve retracts into the installation frame through the rotation of the threaded rod, so that the limit guide angle at its end is separated from the annular groove of the cylinder. The cylinder can be separated from the water tank without the restriction of the fixed sleeve, which facilitates its loading and unloading work. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of a three-dimensional hydroponic device for plants according to an embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the front cross-section structure of a three-dimensional hydroponic device for plants according to an embodiment of the present application.

[0031] Figure 3 A three-dimensional hydroponic device for planting plants according to an embodiment of the present application Figure 2 Enlarged structural diagram at A in the middle.

[0032] Figure 4 This is a schematic diagram of the front cross-sectional structure of the support plate of a three-dimensional hydroponic device for plants in an embodiment of the present application.

[0033] Figure 5 This is a schematic diagram of the top-sectional structure of the installation frame of a three-dimensional hydroponic device for plants in an embodiment of the present application.

[0034] Figure 6 This is a schematic side-sectional structure diagram of a three-dimensional hydroponic device for plants according to an embodiment of the present application.

[0035] In the attached drawings: 1. water storage tank; 2. cylinder; 3. positioning ring; 4. planting groove; 5. spring; 6. stop plate; 7. pull rod; 8. water supply pipe; 9. water spray hole; 10. return hole; 11. filter screen; 12. circulating water pump; 13. silicone cushion; 14. guide slider; 15. installation frame; 16. threaded rod; 17. fixing sleeve; 18. annular groove; 19. limit slider; 20. drain pipe; 21. sealing cover; 60. device body. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The present application embodiment discloses a three-dimensional hydroponic device for plants. Figure 1A three-dimensional hydroponic device for plants comprises a water storage tank 1 and a cylinder 2. A positioning ring 3 sleeved on the outside of the cylinder 2 is fixedly installed on the upper surface of the water storage tank 1. A fixing mechanism for fixing the cylinder 2 is arranged on the surface of the positioning ring 3. A planting groove 4 is provided on the surface of the cylinder 2. A planting mechanism is arranged inside the planting groove 4. The positioning ring and the fixing mechanism realize the stable installation of the cylinder, ensuring that the device has good structural stability during operation; the planting groove provided on the surface of the cylinder reasonably utilizes the space of the device, improves the space utilization rate of plant planting, and meets the three-dimensional planting needs of multiple plants; the planting mechanism arranged inside the planting groove is convenient for quickly and firmly fixing the plants, effectively preventing the plants from loosening or shifting, ensuring the healthy growth of the plants and the convenience of management. The overall structural layout is compact, the functional division is clear, and it integrates stability, high efficiency and convenient operation, which significantly improves the planting efficiency and practicality of the three-dimensional hydroponic system and is suitable for the three-dimensional hydroponic environment of multiple varieties of plants.

[0038] Reference Figure 2 , Figure 3 The planting mechanism includes a fixed groove provided on the inner bottom wall of the planting groove 4, a spring 5 is fixedly connected to the inner bottom wall of the fixed groove, and a butt plate 6 is fixedly connected to the upper end of the spring 5. A sliding strip opening penetrating into the interior of the fixed groove is provided on the surface of the cylinder 2, and a pull rod 7 fixedly connected to the surface of the butt plate 6 is slidably connected to the inner wall of the sliding strip opening. A water supply pipe 8 extending into the interior of the cylinder 2 is embedded on the upper surface of the water storage tank 1, and a water spray hole 9 is provided on the surface of the water supply pipe 8. The structure of the fixed groove, the spring 5 and the butt plate 6 realizes the stable fixation of the plant and ensures that the plant can maintain stable growth during the hydroponic process. The flexible characteristics of the spring 5 can adapt to the growth changes of the plant roots. At the same time, the up and down adjustment function of the spring improves the growth adaptability of the plant. The cooperation between the pull rod 7 and the sliding strip enables the planting mechanism to flexibly adjust the height and position of the plant as needed, meet the planting needs of plants in different growth stages, and improve the convenience and flexibility of management. The water supply pipe 8 and the water spray hole 9 provide precise water supply, ensuring uniform irrigation of plants in each planting trough, ensuring the healthy growth of the plants, and effectively realizing the stable fixation, flexible adjustment and precise irrigation of plants in the three-dimensional hydroponic system, improving planting efficiency and convenience of management, adapting to the needs of multiple varieties of plants, and improving resource utilization and system stability during the hydroponic process.

[0039] Reference Figure 4 A guide slide block 14 is provided on the surface of the butt plate 6, and a guide slide block 14 is provided on the inner wall of the fixed groove for the guide slide block 14 to slide. Under the guiding action of the guide slide block 14, the butt plate 6 can be smoothly guided and moved up and down in the fixed groove, thereby realizing the smooth up and down movement of the butt plate 6 in the planting mechanism, ensuring that the plant can stably adjust its position during the hydroponic process, avoiding the growth of the plant due to offset or jamming, and at the same time improving the accuracy of adjustment and the convenience of operation, thereby enhancing the stability and adaptability of the entire hydroponic system.

[0040] Reference Figure 2 There are several planting troughs 4 and water spray holes 9, which are arranged in a circular array on the surface of the cylinder 2 and the water supply pipe 8, respectively, to achieve uniformly distributed irrigation and planting space, which can meet the water needs of multiple plants at the same time and ensure that each plant is evenly supplied with water, thereby improving the irrigation efficiency and resource utilization of the hydroponic system, ensuring the healthy growth of plants in different positions, optimizing space utilization and water distribution, and enhancing the stability and efficiency of the overall hydroponic device.

[0041] Reference Figure 5 , Figure 6 A reflux groove is provided on the upper surface of the water storage tank 1, and a reflux hole 10 communicating with the interior of the water storage tank 1 is provided on the inner bottom wall of the reflux groove. A filter screen 11 is provided inside the reflux groove. A circulating water pump 12 is embedded on the right side of the water storage tank 1. The pumping end of the circulating water pump 12 is communicated with the interior of the water storage tank 1, and the water outlet end of the circulating water pump 12 extends to the interior of the water supply pipe 8. The circulating water pump 12 is connected to an external power supply;

[0042] A filling port and a drain pipe 20 are respectively provided on the upper surface and the back side of the water storage tank 1, and the upper end of the filling port is threadedly connected to a sealing cover 21; four universal wheels arranged in a circular array are installed on the lower surface of the water storage tank 1. The setting of the universal wheels facilitates the transportation of the hydroponic device, realizes efficient recovery and filtration of irrigation water, ensures clean water quality and effective recycling, and reduces water resource waste. The setting of the filling port and the drain pipe makes water replenishment and discharge more convenient. The sealing cover ensures the sealing of the water tank and prevents water evaporation. The design of four universal wheels further improves the mobility of the device, facilitates the transportation and position adjustment of the device in different environments, improves the flexibility of operation and the overall mobility of the device, and combines efficient water circulation, convenient water replenishment and drainage, and good mobility as a whole, enhances the convenience of use and system stability of the hydroponic device, meets the needs of growing multiple varieties of plants, and improves the operability and maintainability of the system.

[0043] Reference Figure 2 and Figure 3 A silicone pad layer 13 is provided at one end of the support plate 6 extending into the planting groove 4. The silicone pad layer 13 can provide protection when the support plate 6 is against the plant.

[0044] Reference Figure 2 , Figure 5 and Figure 6The fixing mechanism includes mounting frames 15 respectively embedded in both sides of the positioning ring 3. A rotating opening is penetrated on the surface of the mounting frame 15 away from the positioning ring 3. A threaded rod 16 is rotatably connected to the inner wall of the rotating opening. A fixing sleeve 17 is threadedly connected to the surface of the threaded rod 16. The opposite ends of the two fixing sleeves 17 are provided with limited chamfers. An annular groove 18 adapted to the limited guide angle is provided on the lower end surface of the cylinder 2. The combination of the threaded rod and the fixing sleeve can easily adjust the fixed position of the cylinder. The cooperation of the limited chamfer and the annular groove ensures that the cylinder can be accurately positioned during the installation process and prevents loosening or displacement, thereby improving the overall structural stability and firmness of the device. The movable opening makes the clamping operation easier, and the cylinder can be quickly adjusted and disassembled when needed, which is convenient for cleaning and maintenance. It not only improves the installation and disassembly efficiency of the device, but also ensures the stability and safety in long-term use, and enhances the reliability and service life of the device. Through the setting of the fixed sleeve 17 and the annular groove 18, the cylinder 2 can be fixed above the water tank 1, and the front and back sides of the fixed sleeve 17 are provided with limit sliders 19, and the inner front wall and the inner rear wall of the installation frame 15 are provided with limit slide grooves for the limit slider 19 to slide. Under the guiding action of the limit slider 19, the fixed sleeve 17 can be directed and moved by the rotation of the threaded rod 16.

[0045] The implementation principle of the three-dimensional hydroponic device for planting plants in the first embodiment of the present application is as follows: when planting plants, the pull rod 7 is pulled down to drive the support plate 6 to retract into the fixed groove, and then the root of the plant to be planted is inserted into the planting groove 4 and the root is allowed to enter the cylinder 2. At this time, the pull rod 7 is released, and the support plate 6 is pushed up by the spring 5 until the silicone pad 13 at its upper end is against the plant, thereby achieving the effect of planting the plant. During hydroponic irrigation, the operation of the circulating water pump 12 pumps the nutrient water in the water storage tank 1 into the water supply pipe 8 and sprays it out through a plurality of spray holes 9, so as to irrigate the plants in the cylinder 2. The roots are irrigated, during which the excess water flows back into the water storage tank 1 through the reflux groove and the reflux hole 10. The refluxed nutrient water can be filtered and processed under the action of the filter screen 11 for subsequent recycling. When the filter screen 11 needs to be replaced or cleaned, the threaded rod 16 is rotated. Under the guidance of the limiting slider 19, the fixed sleeve 17 is retracted into the installation frame 15 through the rotation of the threaded rod 16, so that the limiting guide angle at its end is separated from the annular groove 18 of the cylinder body 2, and the cylinder body 2 can be separated from the water storage tank 1 without the restriction of the fixed sleeve 17.

[0046] The technical advantages of the three-dimensional hydroponic device for plants in Example 1 of the present application are:

[0047] 1. Structural stability: Through the precise design of the positioning ring, the clamping mechanism and the planting mechanism, the device is ensured to operate stably during the hydroponic process, preventing any unnecessary movement or loosening, and improving the overall structural stability and service life of the system.

[0048] 2. Efficient use of space: The reasonable distribution and design of the planting troughs maximize the use of three-dimensional space, can accommodate multiple plants at the same time, meet the three-dimensional planting needs of multiple varieties of plants, and improve the efficiency of space utilization.

[0049] 3. Flexible adjustment: The planting mechanism can adjust the height and position of the plant according to different growth stages through the structural design of springs, pull rods and sliding strips, so that it can get the best support and irrigation conditions during the growth process.

[0050] 4. Precision irrigation: The design of the water supply pipe and spray holes ensures that each planting trough can be evenly supplied with water, avoiding water waste and improving irrigation efficiency and plant health.

[0051] 5. Resource recovery and circulation: The reflux groove, reflux hole and filter screen design of the water storage tank realizes efficient water recovery and filtration, reduces the waste of water resources, ensures clean water quality and effective circulation, and improves the environmental protection of the overall system.

[0052] 6. Convenient operation and maintenance: Through the design of adjustable fixed sleeve, slider and rotating opening, users can easily adjust or disassemble the cylinder part, which is convenient for cleaning and maintenance of the equipment, and at the same time improves the convenience of use of the device.

[0053] 7. Enhanced device mobility: The universal wheels installed at the bottom of the water tank increase the mobility of the hydroponic device, facilitate the transportation and position adjustment of the equipment in different environments, and improve the flexibility of operation.

[0054] 8. Protect plant roots: By setting up a silicone pad and a guide slider, the damage to the plants during the planting process is reduced, while ensuring the stable growth of the plants and enhancing the adaptability of the system.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A three-dimensional hydroponic plant device, comprising a device body (60), characterized in that: The device body (60) comprises a water storage tank (1) and a cylinder (2); a positioning ring (3) sleeved on the outside of the cylinder (2) is fixedly mounted on the upper surface of the water storage tank (1); a clamping mechanism for fixing the cylinder (2) is arranged on the surface of the positioning ring (3); a planting groove (4) is provided on the surface of the cylinder (2); a planting mechanism is arranged inside the planting groove (4); The planting mechanism comprises a fixing groove provided on the inner bottom wall of the planting groove (4), the inner bottom wall of the fixing groove being fixedly connected to a spring (5), the upper end of the spring (5) being fixedly connected to a butt plate (6), the surface of the cylinder (2) being provided with a sliding strip opening penetrating into the interior of the fixing groove, the inner wall of the sliding strip opening being slidably connected to a pull rod (7) fixedly connected to the surface of the butt plate (6), the upper surface of the water storage tank (1) being embedded with a water supply pipe (8) extending into the interior of the cylinder (2), the surface of the water supply pipe (8) being provided with a water spray hole (9); The upper surface of the water storage tank (1) is provided with a reflux groove, the inner bottom wall of the reflux groove is provided with a reflux hole (10) connected to the inside of the water storage tank (1), a filter screen (11) is arranged inside the reflux groove, a circulating water pump (12) is embedded on the right side of the water storage tank (1), the water pumping end of the circulating water pump (12) is connected to the inside of the water storage tank (1), and the water outlet end of the circulating water pump (12) extends to the inside of the water supply pipe (8).

2. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: One end of the abutment plate (6) extending into the interior of the planting trough (4) is provided with a silica gel cushion layer (13).

3. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: A guide slide block (14) is arranged on the surface of the abutment plate (6), and a guide slide groove for the guide slide block (14) to slide is provided on the inner wall of the fixing groove.

4. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: The number of the planting grooves (4) and the water spray holes (9) is multiple, and the multiple planting grooves (4) and the water spray holes (9) are arranged in a circular array on the surface of the cylinder (2) and the water supply pipe (8) respectively.

5. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: The clamping mechanism comprises mounting frames (15) respectively embedded in both sides of the positioning ring (3); a rotating opening is formed through a surface of the mounting frame (15) on one side away from the positioning ring (3); a threaded rod (16) is rotatably connected to the inner wall of the rotating opening; a fixed sleeve (17) is threadedly connected to the surface of the threaded rod (16); limiting guide angles are arranged at opposite ends of the two fixed sleeves (17); and an annular clamping groove (18) matching the limiting chamfer is formed on the lower end surface of the cylinder (2).

6. The three-dimensional hydroponic device for plants according to claim 5, characterized in that: The front and back sides of the fixed sleeve (17) are both provided with limit slide blocks (19), and the inner front wall and the inner rear wall of the installation frame (15) are both provided with limit slide grooves for the limit slide blocks (19) to slide.

7. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: The upper surface and the back surface of the water storage tank (1) are respectively provided with a filling port and a drainage pipe (20), and the upper end of the filling port is threadedly connected to a sealing cover (21).

8. The three-dimensional hydroponic device for plants according to claim 1, characterized in that: Four universal wheels arranged in a circular array are mounted on the lower surface of the water storage tank (1).