Gravity opening and closing type automatic irrigation device

Abstract

The invention relates to the technical field of watering irrigation, and discloses a gravity opening and closing type automatic irrigation device which comprises a potted plant, the potted plant is located above a potted plant base, a drainage hole is formed in the potted plant base, a flow guide pipe is arranged at the bottom of the drainage hole, and the lower portion of the potted plant base is fixedly connected with two vertical elastic devices. The vertical elastic device is fixedly connected with the base, a floor drain is arranged on the upper portion of the base, the potting base and the base are fixedly connected through two telescopic rods, the telescopic rods can stretch out and draw back up and down along with the potting base, baffles are arranged on the two sides of the base, and four foot plates are arranged below the base. Potted plants only need to be placed on the tray of the device, automatic irrigation can be achieved, meanwhile, holes are formed in the lower portion of the tray so that redundant water can flow out conveniently, low-cost, high-reliability and full-automatic sustainable irrigation is achieved, and the device is particularly suitable for green plant maintenance in family gardening, agricultural greenhouses and arid areas.

Description

Technical Field

[0001] The present invention relates to the technical field of watering and irrigation, and specifically to a gravity-actuated automatic irrigation device. Background Art

[0002] As an independent planting unit, potted green plants have become an important carrier for families, office spaces, scientific research objects, and improving air quality. However, the irrigation methods for traditional potted plants mostly rely on manual watering at regular intervals, and there are the following significant problems: First, human negligence easily leads to water shortage or overwatering of plants, affecting plant health; second, it is difficult to maintain stable irrigation when on business trips or away for a long time; third, existing automatic irrigation systems (such as electronic timed drip irrigation, soil moisture sensor control, etc.) rely on electricity or battery drive, and have limitations such as high energy consumption, complex maintenance, and high costs. Most gravity irrigation devices rely on manual adjustment of fixed water storage containers and valves, and cannot dynamically respond to the actual water demand of the soil, resulting in water resource waste or uneven irrigation.

[0003] In response to the above problems, the gravity-actuated automatic irrigation potted plant device proposed by the present invention innovatively realizes the closed-loop control of irrigation opening and closing through gravitational potential energy and changes in the weight of the container. Its core principle is: when the overall weight of the potted plant drops to a threshold due to water evaporation and plant transpiration, the reverse gravity triggers the irrigation mechanism to open, and external water storage flows into the soil under the action of gravity; after watering, the total weight of the potted plant rises, and the gravity automatically closes the irrigation, thereby realizing the repeated automatic irrigation process. At the same time, this invention can also adjust the timing of each automatic irrigation opening through a mechanical structure, that is, control the irrigation cycle, so as to meet the differences in drought tolerance of different plants; it can also adjust the irrigation amount of each automatic irrigation to meet the differences in water demand of different plants, and avoid the situation of root rot and excessive water in the roots that cannot breathe. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a gravity-actuated automatic irrigation device to meet the water control of a planting unit, change the current situation of manual watering at regular intervals, and provide convenience and periodicity for the regular irrigation of water in a planting unit related to indoor plant cultivation and scientific research.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A gravity-actuated automatic irrigation device includes a potted plant, the potted plant is located above a potted plant base, the potted plant base is provided with a drainage hole, a diversion pipe is provided at the bottom of the drainage hole, the lower part of the potted plant base is fixedly connected to two vertical elastic devices, the vertical elastic devices are fixedly connected to the base, a floor drain is provided on the upper part of the base, the potted plant base and the base are fixedly connected to two telescopic rods, the telescopic rods can be telescoped up and down with the potted plant base, baffles are provided on both sides of the base, and four foot plates are provided under the base.

[0006] Preferably, the lower part of the potted plant base is fixedly connected to the lower U-shaped groove through a central connecting rod. There are two first limiting rods passing through the middle of the lower U-shaped groove, and the two first limiting rods are slidably connected to the upper U-shaped groove.

[0007] Preferably, a connecting plate and a telescopic straight rod are fixedly connected to the side of the upper U-shaped groove. The telescopic straight rod is fixedly connected to a horizontal slider, and the horizontal slider is slidably connected to a horizontal slide rail.

[0008] Preferably, a rack is fixedly connected to the upper part of the horizontal slider. The rack is meshed with an adjacent quarter gear, and the quarter gear is fixedly connected to a central shaft. A ball valve is arranged on the upper part of the central shaft. The ball valve is located inside a water outlet pipe, and the water outlet pipe communicates with a water storage tank. A plurality of support columns are fixedly connected to the lower part of the water storage tank to support a platform frame.

[0009] Preferably, the side of the lower U-shaped groove is fixedly connected to a strip-shaped slider through a connecting rod. The strip-shaped slider is slidably connected to two vertical limiting rods, and the two vertical limiting rods are fixedly connected to a lower base and an upper fixed block.

[0010] Preferably, the side of the upper U-shaped groove is fixedly connected to a control rod through a connecting plate. The other end of the control rod is restricted by a strip-shaped limiting plate and a semi-circular limiting plate, and the strip-shaped limiting plate is fixedly connected to the base.

[0011] Preferably, the side of the semi-circular limiting plate is fixedly connected to a vertical slider. One side of a baffle is fixedly connected to a vertical slide rail, and a locking switch device is arranged on the vertical slide rail.

[0012] Preferably, a second limiting rod is arranged inside the semi-circular limiting plate. The second limiting rod is rotatably connected to the semi-circular limiting plate, and a locking switch device is also arranged on the second limiting rod.

[0013] Preferably, a vertical limiting rod is arranged on the inner side of the semi-circular limiting plate, and a one-way plate is arranged on the semi-circular limiting plate.

[0014] Preferably, a connecting horizontal elastic device is arranged on the control rod, and the horizontal elastic device is fixedly connected to one side of a baffle.

[0015] The present invention provides a gravity-actuated automatic irrigation device, which has the following beneficial effects:

[0016] 1. With the present invention, automatic irrigation can be achieved simply by placing a plant pot on the device tray. There is no complex design, and holes are made in the lower part of the tray to facilitate the outflow of excess water. The entire process does not require sensors, electricity, or complex mechanical structures, realizing low-cost, highly reliable, and fully automatic sustainable irrigation, which is particularly suitable for home gardening, agricultural greenhouses, and the maintenance of green plants in arid areas.

[0017] 2. With the present invention, the plant pot is placed on the pot base. Relying on the cooperation of gravity and the vertical elastic device, as well as the coordinated operation of a series of mechanical structures, automatic irrigation is achieved. When the water content in the pot decreases and the weight reduces, the vertical elastic device pushes the pot base upward, the control rod moves upward, and under the action of the horizontal elastic device and the limiting rod II, the ball valve is opened, and the water in the water storage tank flows into the pot; when the water content increases, the valve is closed. The entire process does not require complex electronic equipment and frequent manual operations, greatly saving labor costs.

[0018] 3. With the present invention, by adjusting the positions of the semi-circular limiting plate and the limiting rod II, the irrigation cycle and the irrigation amount can be flexibly adjusted. Adjusting the semi-circular limiting plate downward through the vertical slider can shorten the distance from the control rod to the rotation axis of the limiting rod II, enabling the control rod to reach the critical point faster to start irrigation and meet the needs of plants with frequent water requirements; conversely, it prolongs the irrigation cycle to adapt to drought-tolerant plants. At the same time, rotating the limiting rod II can change the sliding distance of the control rod and the angle with the horizontal. Using the horizontal displacement fixed by the vertical limiting rod to change the vertical displacement distance of the control rod, thereby adjusting the irrigation amount, avoiding waste of water resources, ensuring that plants with different water requirements can obtain appropriate water, being beneficial to the healthy growth of plants, improving the utilization efficiency of water resources, and also reducing the probability of plant death caused by improper watering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is a schematic diagram of the main structure of the present invention;

[0021] Figure 3 is a schematic diagram of one side of the limiting structure of the present invention;

[0022] Figure 4 is a schematic diagram of the other side of the limiting structure of the present invention;

[0023] Figure 5 is a schematic diagram of the irrigation structure of the present invention.

[0024] Among them, 1. potted plant; 2. potted plant base; 3. drain hole; 4. vertical elastic device; 5. base; 6. telescopic rod; 7. baffle; 8. foot tray; 9. central connecting rod; 10. lower U-shaped groove; 11. limiting rod 1; 12. upper U-shaped groove; 13. connecting plate; 14. telescopic straight rod; 15. horizontal slider; 16. rack; 17. 1 / 4 gear; 18. central shaft; 19. ball valve; 20. water outlet pipe; 21. water storage tank; 22. support column; 23. platform frame; 24. connecting rod; 25. strip-shaped slider; 26. vertical limiting rod; 27. fixed block; 28. control rod; 29. strip-shaped limiting plate; 30. semi-circular limiting plate; 31. vertical slider; 32. vertical slide rail; 33. locking switch device; 34. limiting rod 2; 35. vertical limiting rod; 36. one-way plate; 37. horizontal elastic device; 38. diversion pipe; 39. floor drain; 40. horizontal slide rail. Detailed implementation manner

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to the attached Figure 1 - attached Figure 5, an embodiment of the present invention provides a gravity-opening and -closing automatic irrigation device, including a potted plant 1, the potted plant 1 is located above a potted plant base 2, the potted plant base 2 is provided with a drain hole 3, a diversion pipe 38 is arranged at the bottom of the drain hole 3, the lower part of the potted plant base 2 is fixedly connected with two vertical elastic devices 4, the vertical elastic devices 4 are fixedly connected with a base 5, a floor drain 39 is arranged on the upper part of the base 5, two telescopic rods 6 are fixedly connected between the potted plant base 2 and the base 5, the telescopic rods 6 can telescopically move up and down with the potted plant base 2, baffles 7 are arranged on both sides of the base 5, and four foot plates 8 are arranged below the base 5. The lower part of the potted plant base 2 is fixedly connected with a lower U-shaped groove 10 through a central connecting rod 9, two limiting rods 11 pass through and are connected in the middle of the lower U-shaped groove 10, and the two limiting rods 11 are slidably connected with an upper U-shaped groove 12. A connecting plate 13 and a telescopic straight rod 14 are fixedly connected to the side of the upper U-shaped groove 12, the telescopic straight rod 14 is fixedly connected with a horizontal slider 15, and the horizontal slider 15 is slidably connected to a horizontal slide rail 40. A rack 16 is fixedly connected to the upper part of the horizontal slider 15, the rack 16 is meshed with an adjacent 1 / 4 gear 17, the 1 / 4 gear 17 is fixedly connected with a central shaft 18, a ball valve 19 is arranged on the upper part of the central shaft 18, the ball valve 19 is located inside a water outlet pipe 20, the water outlet pipe 20 communicates with a water storage tank 21, and a plurality of support columns 22 are fixedly connected to the lower part of the water storage tank 21 to support a platform frame 23. The side of the lower U-shaped groove 10 is fixedly connected with a strip-shaped slider 25 through a connecting rod 24, the strip-shaped slider 25 is slidably connected with two vertical limiting rods 26, and the two vertical limiting rods 26 are fixedly connected with the lower base 5 and the upper fixing block 27. A control rod 28 is fixedly connected to the side of the upper U-shaped groove 12 through the connecting plate 13, and the other end of the control rod 28 is limited by a strip-shaped limiting plate 29 and a semi-circular limiting plate 30, and the strip-shaped limiting plate 29 is fixedly connected with the base 5. A vertical slider 31 is fixedly connected to the side of the semi-circular limiting plate 30, one side baffle 7 is fixedly connected with a vertical slide rail 32, and a locking switch device 33 is arranged on the vertical slide rail 32. A limiting rod 34 is arranged inside the semi-circular limiting plate 30, the limiting rod 34 is rotatably connected with the semi-circular limiting plate 30, and a locking switch device 33 is also arranged on the limiting rod 34. A vertical limiting rod 35 is arranged on the inner side of the semi-circular limiting plate 30, and a one-way plate 36 is arranged on the semi-circular limiting plate 30. A connecting horizontal elastic device 37 is arranged on the control rod 28, and the horizontal elastic device 37 is fixedly connected with one side baffle 7.

[0027] Based on the principle of gravity opening and closing, the present invention opens the valve for watering irrigation by the weight change caused by the consumption of water in the potted plant 1 unit, and at the same time closes the valve to stop watering irrigation as the water weight increases, achieving the effect of automatic opening and closing.

[0028] Specifically, the potted plant base 2 is fixedly connected to the vertical elastic device 4, the lower U-shaped groove 10, and the strip-shaped slider 25, and the whole can move up and down along with the vertical elastic device 4; the upper U-shaped groove 12 is fixedly connected to the control rod 28 and is fixedly connected to the horizontal slider 15 through the telescopic straight rod 14. At the same time, the upper U-shaped groove 12 is located above the lower U-shaped groove 10 and is slidably connected to the inside of the lower U-shaped groove 10, so that the whole upper U-shaped groove 12 can move left and right, and can also move up and down based on the lower U-shaped groove 10. The left and right movement of the horizontal slider 15 can open and close the ball valve 19 to control the water flow. The movement of the whole device is restricted by the position of the control rod 28. The control rod 28 is restricted inside the strip-shaped limiting plate 29 and the semi-circular limiting plate 30. When the control rod 28 is below the rotation axis (critical point) of the limiting rod II 34, it cannot move horizontally and cannot open the valve switch to fill water. When the control rod 28 is above the rotation axis (critical point) of the limiting rod II 34, it drives the rack 16 to move horizontally to open the valve and can fill water.

[0029] Further, first, place the potted plant 1 unit with sufficient water on the potted plant base 2. The gravity compresses the vertical elastic device 4, causing the position of the potted plant 1 unit to drop. The connected control rod 28 opens the one-way plate 36 and moves downward to below the critical point, being in the non-watering stage.

[0030] Further, as the overall water content of the potted plant 1 unit decreases, it drives the control rod 28 to gradually move upward. When it reaches the position of the rotation axis (critical point) of the control rod 28, the pulling force of the horizontal elastic device 37 and the supporting force on the upper part of the limiting rod II 34 will cause the control rod 28 to slide obliquely upward along the upper part of the limiting rod II 34 to push water for irrigation. When the sliding horizontal distance reaches 30 mm, it is blocked by the vertical limiting rod 35 and stops. At this time, the rack 16 on the horizontal slider 15 also moves 30 mm to the right, driving the 1 / 4 gear 17 to open the ball valve 19 switch, so that water flows from the water storage tank 21 into the potted plant 1 unit to start watering. At this time, it is in the starting watering stage.

[0031] Further, as the water content in the potted plant 1 unit increases, the gravity increases, driving the control rod 28 to slide obliquely downward along the upper part of the limiting rod II 34 instead. When it reaches below the critical point, the valve is closed to stop watering. At this time, it is in the stop watering stage. At this time, another function of the horizontal elastic device 37 is to give the control rod 28 an upward resultant force through the pulling force and the supporting force to delay watering. The achieved effect is that when the control rod 28 returns to the critical point, the overall weight of the potted plant 1 unit is greater than that in the starting watering stage, achieving the purpose of watering. The excess water will flow out from the bottom of the potted plant 1 and be discharged to the floor drain 39 through the diversion pipe 38. At this time, one watering cycle ends.

[0032] Due to the different water requirements and irrigation cycles of different potted plant 1 crops, the irrigation cycle and the amount of irrigation water can be adjusted by adjusting the positions of the semi-circular limiting plate 30 and the second limiting rod 34.

[0033] Specifically, for the irrigation cycle: the semi-circular limiting plate 30 can move up and down through the connected vertical slider 31, and there is a locking switch device 33 to lock the position of the semi-circular limiting plate 30. Therefore, the distance from the control rod 28 to the rotation axis of the second limiting rod 34 will change accordingly. Thus, the start time of each irrigation can be varied. If more frequent irrigation is required, the semi-circular limiting plate 30 can be adjusted downward. If a longer irrigation cycle is needed, the semi-circular limiting plate 30 can be adjusted upward.

[0034] Furthermore, for the amount of irrigation water: when the control rod 28 reaches the rotation axis of the second limiting rod 34, irrigation starts. At this time, the control rod 28 will slide obliquely upward along the upper part of the second limiting rod 34. If the second limiting rod 34 is rotated, the sliding distance of the control rod 28 will change accordingly, and the angle between the second limiting rod 34 and the horizontal will also change accordingly. Since the vertical limiting rod 35 makes the horizontal displacement distance of the control rod 28 30 mm. In the right triangle of the displacement of the control rod 28, the horizontal right-angled side remains unchanged, and the vertical right-angled side is 30tanα. Thus, the vertical right-angled side changes accordingly, that is, the vertical displacement distance of the control rod 28 changes accordingly. And the vertical displacement distance is related to the water in the entire potted plant 1 unit device. The amount of irrigation water can be increased by rotating the second limiting rod 34 counterclockwise to increase the overall vertical displacement of the potted plant 1 unit, and the amount of irrigation water can be reduced by rotating the second limiting rod 34 clockwise to reduce the overall vertical displacement of the potted plant 1 unit. At the same time, there is a locking switch device 33 on the second limiting rod 34 to lock the position of the second limiting rod 34 to achieve a fixed effect.

[0035] Working principle: First, place the potted plant 1 with sufficient irrigation water on the potted plant base 2. At this time, the gravity of the potted plant 1 acts on the vertical elastic device 4, causing it to be compressed. Since the potted plant base 2 is fixedly connected to the vertical elastic device 4, the lower U-shaped groove 10, and the strip-shaped slider 25, the whole will descend with the compression of the vertical elastic device 4. At the same time, the control rod 28 connected to the potted plant base 2 will also move downward. The movement of the control rod 28 causes the one-way plate 36 to open until the control rod 28 moves below the rotation axis (critical point) of the second limiting rod 34. At this time, the whole device is in the non-irrigation stage.

[0036] Over time, the water in Pot 1 gradually decreases due to the transpiration of the plants and natural evaporation, and the overall weight of Pot 1 decreases accordingly. Since the vertical elastic device 4 is elastic, when the weight of Pot 1 decreases, it will push the pot base 2 and the pot 1 on it upward, and the connected control rod 28 will also gradually move upward. When the control rod 28 moves to the position of the rotation axis (critical point) of the second limiting rod 34, the pulling force of the horizontal elastic device 37 and the supporting force on the upper part of the second limiting rod 34 begin to take effect. Under the combined action of these two forces, the control rod 28 will slide obliquely upward along the upper part of the second limiting rod 34.

[0037] During the process of the control rod 28 sliding obliquely upward, the upper U-shaped groove 12 connected to it through the connecting plate 13 and the telescopic straight rod 14 will also move accordingly. Since the upper U-shaped groove 12 is fixedly connected to the horizontal slider 15, and the horizontal slider 15 is slidably connected to the horizontal slide rail 40, the movement of the upper U-shaped groove 12 will drive the horizontal slider 15 to slide on the horizontal slide rail 40. When the horizontal distance of the control rod 28 sliding reaches 30 mm, it will be blocked by the vertical limiting rod 35 and stop. At this time, the rack 16 on the horizontal slider 15 also moves 30 mm to the right. Since the rack 16 is meshed with the adjacent 1 / 4 gear 17, and the 1 / 4 gear 17 is fixedly connected to the central shaft 18, the movement of the rack 16 will drive the 1 / 4 gear 17 to rotate, and then the central shaft 18 will rotate. And a ball valve 19 is provided on the upper part of the central shaft 18. The ball valve 19 is located inside the water outlet pipe 20, and the water outlet pipe 20 is communicated with the water storage tank 21. The rotation of the central shaft 18 will open the ball valve 19 switch. Under the action of gravity, the water in the water storage tank 21 will flow into the Pot 1 unit through the water outlet pipe 20. At this time, the device enters the stage of starting to fill water.

[0038] As water continuously flows into Pot 1, the weight of Pot 1 gradually increases, and the gravity also increases accordingly, causing the control rod 28 to slide obliquely downward along the upper part of the second limiting rod 34 in turn. When the control rod 28 reaches below the rotation axis (critical point) of the second limiting rod 34, the valve (ball valve 19) is closed, and the water filling into Pot 1 stops. The device enters the stage of stopping water filling. At this time, the horizontal elastic device 37 has another important function. It gives a resultant upward force to the control rod 28 through the pulling force and the supporting force, and this resultant force will delay the time of the next water filling. The effect of this is that when the control rod 28 returns to the critical point again, the overall weight of the Pot 1 unit is greater than that in the stage of starting to fill water, ensuring that Pot 1 can obtain more sufficient water and achieving a better irrigation effect.

[0039] During the whole irrigation process, the excess water will flow out from the drain hole 3 at the bottom of Pot 1, and the diversion pipe 38 arranged at the bottom of the drain hole 3 will guide these excess waters to the floor drain 39 on the upper part of the base 5, thus avoiding the adverse effects of water accumulation on the plants in Pot 1 and completing a complete water filling cycle.

[0040] It is fixedly connected to the vertical slider 31 through the semi-circular limiting plate 30. The vertical slider 31 can move up and down on the vertical slide rail 32, and a locking switch device 33 is provided on the vertical slide rail 32 to lock the position of the semi-circular limiting plate 30. When the position of the semi-circular limiting plate 30 changes, the distance from the control rod 28 to the rotation axis of the second limiting rod 34 will also change accordingly. If more frequent irrigation is required, the semi-circular limiting plate 30 can be adjusted downward, so that the control rod 28 can more easily reach the critical point, thereby shortening the time interval for starting irrigation each time; conversely, if a longer irrigation cycle is desired, the semi-circular limiting plate 30 is adjusted upward.

[0041] For the adjustment of the irrigation amount, it is achieved by rotating the second limiting rod 34. When the control rod 28 reaches the rotation axis of the second limiting rod 34 and starts irrigation, the control rod 28 will slide obliquely upward along the upper part of the second limiting rod 34. If the second limiting rod 34 is rotated, both the sliding distance of the control rod 28 and the angle between the second limiting rod 34 and the horizontal will change. Since the vertical limiting rod 35 makes the horizontal displacement distance of the control rod 28 fixed at 30 mm, in the right triangle formed by the displacement of the control rod 28, the horizontal right-angled side remains unchanged, and the vertical right-angled side is 30tanα (α is the angle between the second limiting rod 34 and the horizontal). Therefore, as the angle changes, the vertical right-angled side will also change, that is, the vertical displacement distance of the control rod 28 changes accordingly. The vertical displacement distance of the control rod 28 is related to the water in the entire potted plant 1 unit device. By rotating the second limiting rod 34 counterclockwise, the overall vertical displacement of the potted plant 1 unit can be increased, thereby increasing the irrigation amount; rotating the second limiting rod 34 clockwise will reduce the overall vertical displacement of the potted plant 1 unit to achieve the purpose of reducing the irrigation amount. At the same time, a locking switch device 33 is also provided on the second limiting rod 34. After adjusting the irrigation amount, the position of the second limiting rod 34 can be locked to ensure that the irrigation amount for each irrigation remains stable.

[0042] In summary, this device realizes the function of automatic irrigation by utilizing the change of gravity, and can flexibly adjust the irrigation cycle and irrigation amount according to the needs of different potted plant 1 crops, effectively solving the problems existing in the traditional potted plant 1 irrigation method, and providing a convenient and efficient water control solution for indoor plant cultivation, scientific research, etc.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic irrigation device with gravity opening and closing, characterized in that, It includes a potted plant (1) which is located above a potted plant base (2). The potted plant base (2) is provided with a drain hole (3), and a diversion pipe (38) is arranged at the bottom of the drain hole (3). The lower part of the potted plant base (2) is fixedly connected to two vertical elastic devices (4), and the vertical elastic devices (4) are fixedly connected to a base (5). A floor drain (39) is arranged on the upper part of the base (5). The potted plant base (2) and the base (5) are fixedly connected to two telescopic rods (6), and the telescopic rods (6) can stretch up and down along with the potted plant base (2). Baffles (7) are arranged on both sides of the base (5), and four foot plates (8) are arranged under the base (5).

2. The automatic irrigation device with gravity opening and closing type according to claim 1, characterized in that, The lower part of the potted plant base (2) is fixedly connected to a lower U-shaped groove (10) through a central connecting rod (9). There are two limiting rods one (11) passing through and connecting in the middle of the lower U-shaped groove (10), and the two limiting rods one (11) are slidably connected to an upper U-shaped groove (12).

3. The automatic irrigation device with gravity opening and closing according to claim 2, characterized in that, A connecting plate (13) and a telescopic straight rod (14) are fixedly connected to the side part of the upper U-shaped groove (12). The telescopic straight rod (14) is fixedly connected to a horizontal slider (15), and the horizontal slider (15) is slidably connected to a horizontal slide rail (40).

4. The gravity-opening and closing type automatic irrigation device according to claim 3, wherein, A rack (16) is fixedly connected to the upper part of the horizontal slider (15). The rack (16) is in meshing connection with an adjacent 1 / 4 gear (17). The 1 / 4 gear (17) is fixedly connected to a central shaft (18). A ball valve (19) is arranged on the upper part of the central shaft (18). The ball valve (19) is located inside a water outlet pipe (20), and the water outlet pipe (20) communicates with a water storage tank (21). Multiple support columns (22) are fixedly connected to the lower part of the water storage tank (21) to support a platform frame (23).

5. The gravity-opening and closing type automatic irrigation device according to claim 2, characterized in that, The side part of the lower U-shaped groove (10) is fixedly connected to a strip-shaped slider (25) through a connecting rod (24). The strip-shaped slider (25) is slidably connected to two vertical limiting rods (26), and the two vertical limiting rods (26) are fixedly connected to the lower base (5) and the upper fixing block (27).

6. The gravity-actuated automatic irrigation device according to claim 2, wherein The side part of the upper U-shaped groove (12) is fixedly connected to a control rod (28) through a connecting plate (13). The other end of the control rod (28) is restricted by a strip-shaped limiting plate (29) and a semi-circular limiting plate (30), and the strip-shaped limiting plate (29) is fixedly connected to the base (5).

7. The gravity-opening and closing type automatic irrigation device according to claim 6, characterized in that, The side part of the semi-circular limiting plate (30) is fixedly connected to a vertical slider (31). One side of the baffle (7) is fixedly connected to a vertical slide rail (32), and a locking switch device (33) is arranged on the vertical slide rail (32).

8. The gravity-opening and closing type automatic irrigation device according to claim 6, characterized in that, A limiting rod two (34) is arranged inside the semi-circular limiting plate (30). The limiting rod two (34) is rotatably connected to the semi-circular limiting plate (30), and a locking switch device (33) is also arranged on the limiting rod two (34).

9. The gravity-opening and closing type automatic irrigation device according to claim 8, characterized in that, A vertical limiting rod (35) is arranged on the inner side of the semi-circular limiting plate (30), and a one-way plate (36) is arranged on the semi-circular limiting plate (30).

10. The automatic irrigation device with gravity opening and closing as claimed in claim 6, characterized in that, A connecting horizontal elastic device (37) is arranged on the control rod (28), and the horizontal elastic device (37) is fixedly connected with a side baffle (7).

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