Internal drip type floating water irrigation device

Abstract

The invention discloses an internal drip irrigation device for floating on water, comprising a water container for holding liquid, a float, a water receiving chamber, an adjustment mechanism, and a liquid delivery pipe inside the water container. The adjustment mechanism and the water receiving chamber are mounted on the float. The liquid delivery pipe has an inlet and an outlet. The inlet of the liquid delivery pipe is connected to the inside of the water container and is lower than the liquid level in the water container. The outlet of the liquid delivery pipe is located inside the water receiving chamber and is connected to the water receiving chamber. The outlet is mounted on the adjustment mechanism, which can adjust the height of the outlet to change the height difference between the outlet and the liquid level in the water container. The liquid delivery pipe is used to deliver the liquid in the water container to the water receiving chamber. The water receiving chamber has a first outlet for the liquid to flow out of the water receiving chamber. The water container has a second outlet, and the first outlet is connected to the second outlet via a connecting hose.

Description

Technical Field

[0001] This invention relates to a drip irrigation device, and more particularly to an internal drip type floating water drip irrigation device. Background Technology

[0002] Drip irrigation is an irrigation method widely used in agriculture and horticulture. Specifically, it refers to the method of evenly and slowly dripping water and the moisture and nutrients needed by crops into the soil of the crop root zone through a pipeline system and water emitters installed on capillary tubes, according to the water requirements of crops.

[0003] Most existing drip irrigation systems adjust the dripping speed by regulating the cross-sectional area of ​​the water flow channel. Since the cross-sectional area of ​​the water flow channel is often very small, there are drawbacks such as the drippers being prone to clogging, requiring frequent cleaning of the drippers, resulting in a large amount of maintenance work and high requirements for water quality.

[0004] To address the problem of clogging due to small cross-sectional area of ​​the water flow channel, drip irrigation devices based on the siphon principle have been developed. For example, patent CN217088963U discloses a drainage regulator comprising a float mechanism, a siphon mechanism, and an adjustment mechanism. The float mechanism consists of a float, a float tube, and a scale base. The siphon mechanism consists of a siphon tube, a flexible hose, and a water outlet valve. The siphon tube is mounted on the float, with one end inserted into the liquid and the other end extending out of the drainage regulator and connected to the external flexible hose. The adjustment mechanism moves the outlet of the flexible hose up and down to adjust the height difference between the outlet and the liquid level in the drainage regulator, thus controlling the dripping speed. The height difference between the outlet and the liquid level in the drainage regulator is the dripping pressure difference; a larger dripping pressure difference results in a faster dripping speed, and a smaller dripping pressure difference results in a slower dripping speed.

[0005] Existing drip irrigation devices based on the siphon principle generally employ the external dripping method. This means that the adjustment mechanism for moving the drip tip up and down, as well as the drip tip of the siphon tube, are located on the outside of the water container. The siphon tube needs to extend from inside the water container to the outside. With the drip tip and adjustment mechanism exposed outside the water container, when used in the field, strong winds or contact with external vegetation or other objects may obstruct the movement of the siphon tube and adjustment mechanism, making the drip pressure difference susceptible to external environmental influences. Furthermore, the exposed siphon tube and adjustment mechanism are not aesthetically pleasing or simple. Summary of the Invention

[0006] Since the drip inlets of the aforementioned regulating mechanism and siphon are all located on the outside of the water container, they are easily affected by strong winds or touched by external garden vegetation and other objects, causing the siphon and regulating mechanism to sway or float and become obstructed, making the drip pressure difference easily affected by the external environment, and are not aesthetically pleasing or neat, the present invention provides an internal drip floating drip irrigation device.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an internal drip-type floating water irrigation device, comprising a water container for holding liquid, characterized in that the water container is provided with a water receiving cavity, an adjusting mechanism, a liquid conveying pipe and a float floating on the liquid surface, the adjusting mechanism and the water receiving cavity are disposed on the float and float up and down with the float, the liquid conveying pipe is provided with an inlet and an outlet, the inlet of the liquid conveying pipe is connected to the inside of the water container and is lower than the liquid surface in the water container, the outlet of the liquid conveying pipe is located in the water receiving cavity and is connected to the water receiving cavity, and the outlet is disposed on the adjusting mechanism, the adjusting mechanism can adjust the rise and fall of the outlet to change the height difference between the outlet and the liquid surface in the water container, the liquid conveying pipe is used to transport the liquid in the water container to the water receiving cavity, the water receiving cavity is provided with a first outlet for the liquid in the water receiving cavity to flow out, the water container is provided with a second outlet, and the first outlet is connected to the second outlet through a connecting hose.

[0008] A further preferred embodiment of the present invention is as follows: the liquid conveying pipeline includes a U-shaped pipe and a sleeve. The sleeve is a water storage cavity with a sealed bottom and an open top. The sleeve is located inside the water receiving cavity and can move up and down relative to the water receiving cavity. The U-shaped pipe is fixed to the water receiving cavity. One end of the U-shaped pipe is connected to the inside of a water container as a water inlet. The other end of the U-shaped pipe is inserted into the sleeve. The sleeve is connected to an adjustment mechanism, and the adjustment mechanism adjusts the lifting and lowering relative to the water receiving cavity. The opening at the top of the sleeve serves as a water outlet.

[0009] A further preferred embodiment of the present invention is as follows: the float includes a control float and a load-bearing float, the control float and the load-bearing float are independent of each other and both float on the liquid surface, the adjustment mechanism is disposed on the control float, and the water receiving cavity is disposed on the load-bearing float.

[0010] A further preferred embodiment of the present invention includes a sealed air storage chamber. The adjustment mechanism includes a lever and a pneumatic cup inverted in the liquid of a water container. The pneumatic cup has a downward opening, and the liquid seals the lower opening of the pneumatic cup to form an internally sealed air chamber. The middle part of the lever is connected to a control float for rotation. A water outlet is located at one end of the lever, and the other end of the lever is connected to the pneumatic cup. The air storage chamber is connected to a vent pipe, and the vent of the vent pipe extends into the air chamber inside the pneumatic cup, connecting the air storage chamber and the air chamber. When the temperature rises or falls, the gas in the pneumatic cup and the air storage chamber expands or contracts, causing the pneumatic cup to rise or fall relative to the liquid level in the water container. When the pneumatic cup rises or falls, it drives the lever to swing up and down to adjust the height difference between the water outlet and the liquid level in the water container.

[0011] A further preferred embodiment of the present invention is as follows: the adjustment mechanism includes a lever, the middle of which is rotatably connected to the control float, the water outlet is located at one end of the lever, and a magnetic metal part is fixed at the other end of the lever. The control float is provided with an electromagnet corresponding to the magnetic metal part, and the electromagnet is located above the magnetic metal part. When the electromagnet is energized, the electromagnet magnetically attracts the magnetic metal part, causing the end of the lever with the water outlet to descend. When the electromagnet is de-energized, the end of the lever with the magnetic metal part falls back and separates from the electromagnet.

[0012] A further preferred embodiment of the present invention is as follows: the adjustment mechanism includes a lever, the middle of which is connected to the control float for rotation, a water outlet is located at one end of the lever, and a water storage carrier is located at the other end of the lever. When it rains, the water storage carrier increases the weight of one end of the lever, causing the other end of the lever to drive the water outlet to rise above the liquid level, and the liquid delivery pipe stops delivering liquid into the water receiving chamber. When it is sunny, the water in the water storage carrier evaporates, reducing the weight of one end of the lever, causing the other end of the lever to drive the water outlet to fall below the liquid level, and the liquid in the water container flows into the water receiving chamber from the liquid delivery pipe.

[0013] A further preferred embodiment of the present invention is as follows: the control float is provided with an upper limit part and a lower limit part located on the upper and lower sides of the lever. The upper limit part and the lower limit part are used to limit the highest and lowest heights of the swing of one end of the lever. The positions and heights of the upper limit part and the lower limit part can be adjusted up and down.

[0014] A further preferred embodiment of the present invention is that the pneumatic cup is provided with a one-way air intake mechanism that allows only external air to enter the pneumatic cup.

[0015] A further preferred embodiment of the present invention is as follows: the one-way air intake mechanism includes a one-way air intake float floating inside the pneumatic cup. The one-way air intake float and the pneumatic cup are independent of each other and do not interfere with each other. The one-way air intake float has a cavity and has an air intake pipe and an air outlet pipe. Both the air intake pipe and the air outlet pipe have a vertical extension length. The outlet pipe is inserted into the liquid, and the inlet pipe extends out of the pneumatic cup and communicates with the outside atmosphere. The inlet pipe is higher than the liquid level in the water container.

[0016] When the pneumatic cup is under positive pressure, the outlet pipe has a liquid column that seals the outlet pipe opening. When the pneumatic cup is under negative pressure, under the action of atmospheric pressure, atmospheric gas passes through the inlet pipe into the cavity and then through the outlet pipe into the air cavity inside the pneumatic cup.

[0017] Compared with the prior art, the advantages of the present invention are that the inlet of the liquid delivery channel is connected to the inside of the water container, and the inlet is lower than the liquid level in the water container. The outlet of the liquid delivery pipe is located in the receiving cavity and is set on the adjustment mechanism. Since the inlet is lower than the liquid level in the water container, when the outlet is lower than the liquid level in the water container, the liquid in the water container is allowed to enter the liquid delivery pipe from the inlet through siphon or direct current, and drip from the outlet into the receiving cavity. Then, it flows from the first outlet through the connecting hose to the second outlet and flows out from the second outlet for drip irrigation.

[0018] The adjustment mechanism and the water receiving cavity are set on the float and float up and down with the float to maintain a constant height difference between the water outlet and the liquid level in the water container during use, that is, a constant drip pressure difference. This keeps the drip rate of water from the water outlet into the water receiving cavity constant. Furthermore, the adjustment mechanism can adjust the height difference between the water outlet and the liquid level in the water container to adjust the liquid flow rate of the drip irrigation.

[0019] The float, water receiving cavity, regulating mechanism, and liquid delivery pipeline are all located inside the water container, which reduces the impact of strong winds or external objects touching the liquid delivery pipeline and regulating mechanism on the drip pressure difference, improves stability, and makes the water container more aesthetically pleasing and neat overall. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 A cross-sectional schematic diagram of the liquid transport pipeline of the first scheme, which includes a control float and a load-bearing float;

[0022] Figure 2 A cross-sectional schematic diagram of the liquid transport pipeline of the second scheme, which includes a control float and a load-bearing float;

[0023] Figure 3 A cross-sectional schematic diagram of a liquid transport pipeline for the third scheme, which includes a control float and a load-bearing float;

[0024] Figure 4 A cross-sectional schematic diagram of an internal drip-type floating drip irrigation device with fixed piles, control floats, and load-bearing floats;

[0025] Figure 5A schematic diagram of a temperature-controlled floating drip irrigation device.

[0026] Figure 6 A cross-sectional schematic diagram of a temperature-controlled floating drip irrigation device.

[0027] Figure 7 A partial cross-sectional schematic diagram of a temperature-controlled floating drip irrigation device.

[0028] Figure 8 A partial cross-sectional schematic diagram of a floating drip irrigation device that combines rain control and temperature control;

[0029] Figure 9 A partial cross-sectional schematic diagram of a rain-controlled and electrically controlled floating drip irrigation device;

[0030] Figure 10 A schematic diagram of the connection structure of multiple floating drip irrigation devices;

[0031] Figure 11 A cross-sectional diagram showing the adjustment mechanism and water receiving cavity mounted on the same float.

[0032] In the diagram: 1. Water container; 2. Load-bearing float; 3. Water receiving chamber; 4. First inlet; 5. Water inlet pipe; 6. Liquid delivery pipe; 7. Water outlet; 8. First outlet; 9. Connecting hose; 10. Second outlet; 11. Movable frame; 12. Positioning post; 13. Screw; 14. Fixing plate; 15. Control float; 16. Water surface; 17. U-shaped tube; 18. Sleeve; 19. First water inlet; 20. Sealing ring; 26. Fixing post; 27. Adjustment mechanism; 28. Pneumatic cup; 29. ​​One-way air intake. 30. Float; 31. Air inlet pipe; 32. Waterproof cap; 33. Mounting bracket; 34. Upper limit position; 35. Lower limit position; 36. Crossbeam counterweight; 37. Sealing cap; 38. Water outlet pipe; 39. Air chamber; 40. Air outlet pipe; 41. Floating counterweight; 42. Nut; 43. Slide rail; 44. Lever; 45. Water storage carrier; 46. Vent notch or vent hole; 47. Float; 48. Air storage chamber; 49. Magnetic metal part; 50. Electromagnet; 51. Annular step; 52. Counterweight. Detailed Implementation

[0033] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0034] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0035] Figures 1-11As shown, the internal drip type floating water irrigation device includes a water container 1 for holding liquid. The water container 1 contains water for drip irrigation. The water container 1 is provided with a water receiving cavity 3, an adjustment mechanism 27, a liquid delivery pipe 6, and a float 47 floating on the water surface. The adjustment mechanism 27 and the water receiving cavity 3 are set on the float 47 and float up and down with the float 47.

[0036] The aforementioned liquid conveying pipe 6 is used to convey water from the water container 1 to the water receiving chamber 3. The liquid conveying pipe 6 is equipped with an inlet 5 and an outlet 7. The inlet 5 of the liquid conveying pipe 6 is connected to the inside of the water container 1 and is lower than the water surface 16 in the water container 1. The outlet 7 of the liquid conveying pipe 6 is located inside the water receiving chamber 3 and is suspended within the chamber. The outlet 7 is connected to the inside of the water receiving chamber 3 and is mounted on an adjusting mechanism 27. The adjusting mechanism 27 can adjust the rise and fall of the outlet 7 relative to the water surface in the water container 1 to change the height difference between the outlet 7 and the water surface in the water container 1. When the outlet 7 is lower than the water surface 16 in the water container 1, the height difference between the outlet 7 and the water surface 16 is the drip pressure difference C.

[0037] The water receiving cavity 3 has an opening at its top.

[0038] Figures 1-3 As shown, the water receiving cavity 3 is provided with a first outlet 8, which is used to allow water to flow out of the water receiving cavity 3. The first outlet 8 is located at the lowest point of the water receiving cavity 3. Preferably, the first outlet 8 is located at the bottom of the water receiving cavity 3 or on the side wall adjacent to the bottom of the cavity, so that the water in the water receiving cavity 3 can flow out completely from the first outlet 8. Alternatively, the inner bottom of the water receiving cavity 3 is a slope, and the first outlet 8 is located at the bottom of the slope.

[0039] The water container 1 is provided with a second outlet 10. A connecting hose 9 is provided between the first outlet 8 and the second outlet 10. The two ends of the connecting hose 9 are respectively connected to the first outlet 8 and the second outlet 10, so that the water flowing out of the first outlet 8 can flow through the connecting hose 9 to the second outlet 10, and then flow out of the water container 1 from the second outlet 10. The connecting hose 9 is located inside the water container 1 and is coiled in the water, and has a length for the water receiving chamber 3 to rise and fall.

[0040] When the regulating mechanism 27 adjusts the outlet 7 to drop below the water level 16 in the water container 1, a drip pressure difference is generated between the outlet 7 and the water level 16 in the water container 1. The water in the water container 1 can flow from the liquid delivery pipe 6 into the water receiving chamber 3. The water flowing into the water receiving chamber 3 flows from the first outlet 8 into the connecting hose 9, and then from the connecting hose 9 to the second outlet 10. The water flows out from the second outlet 10 for drip irrigation. The second outlet 10 is used as the drip irrigation port of the drip irrigation device. When the outlet 7 is lower than the water level 16 in the water container 1, the greater the height difference between the outlet 7 and the water level 16 in the water container 1, the greater the drip pressure difference. The faster the water droplets dripping from the outlet 7 into the water receiving cavity 3, the faster the water flows out of the second outlet 10. The smaller the height difference between the outlet 7 and the water level 16 in the water container 1, the smaller the drip pressure difference. The slower the water droplets dripping from the outlet 7 into the water receiving cavity 3, the slower the water flows out of the second outlet 10.

[0041] When the outlet 7 is higher than the water surface 16, the liquid delivery pipe 6 stops delivering water to the water receiving chamber 3, and the floating drip irrigation device stops drip irrigation.

[0042] The water outlet 7 is mounted on the adjustment mechanism 27, and the float 47 floats on the water surface 16 and automatically changes with the height of the water surface 16 in the water container 1, maintaining a constant height difference between the water outlet 7 and the water surface 16 in the water container 1 during use. This keeps the dripping rate of water from the water outlet 7 into the water receiving cavity 3 constant. The adjustment mechanism 27 can be used to adjust the height difference between the water outlet 7 and the water surface 16 in the water container 1, so that the water from the water outlet 7 into the water receiving cavity 3 can reach the required dripping rate, thereby achieving the purpose of adjusting the liquid flow rate of drip irrigation.

[0043] The float 47, liquid delivery pipe 6, and regulating mechanism 27 are all located inside the water container 1. The water droplets dripping from the outlet 7 of the liquid delivery pipe 6 fall into the water receiving cavity 3 inside the water container 1. The internal drip structure reduces the impact of strong winds or external objects touching the liquid delivery pipe 6 and regulating mechanism 27 on the drip pressure difference, improves stability, and makes the water container 1 more aesthetically pleasing and neat.

[0044] The bottom of the water receiving cavity 3 is provided with a counterweight 52 to adjust the buoyancy of the float 47 used to support the water receiving cavity 3.

[0045] The liquid transport pipeline 6 described above has various structures, the details of which are as follows:

[0046] Figure 1As shown, in one embodiment, the liquid delivery pipe 6 is a flexible hose located inside the water receiving chamber 3. The water receiving chamber 3 is provided with a first inlet 4, which is located below the water surface 16 in the water container 1. One end of the hose is fixedly connected to the first inlet 4 as an inlet 5, allowing it to communicate with the inside of the water container 1. The other end of the hose is connected to the adjustment mechanism 27 as an outlet 7, which is located inside the water receiving chamber 3 and communicates with it. The adjustment mechanism 27 can adjust the rise and fall of the outlet 7, thereby adjusting the drip pressure difference between the outlet 7 and the water surface 16 in the water container 1. When the outlet 7 moves to a position lower than the water surface 16 in the water container 1, the entire hose is lower than the water surface 16 in the water container 1, allowing the water in the water container 1 to flow directly into the water receiving chamber 3 through the hose. The hose does not need to be pre-filled with water before use. Because the outlet 7 is restrained by the hose, the change in the restraining force when the outlet 7 floats up and down with the float 47 may cause a change in the drip pressure difference, thus affecting the drip irrigation speed. However, if the hose is very flexible, this factor can be reduced to a negligible level.

[0047] Figures 2-4 As shown, in another embodiment, the liquid conveying pipeline 6 includes a U-shaped pipe 17 and a sleeve 18. The sleeve 18 is a water storage cavity with a sealed bottom and an opening at the top. The sleeve 18 is located inside the water receiving cavity 3 and can move up and down relative to the water receiving cavity 3. The U-shaped pipe 17 is fixed to the water receiving cavity 3. One end of the U-shaped pipe 17 is connected to the water container 1 as a water inlet 5. The other end of the U-shaped pipe 17 is inserted into the sleeve 18 through the opening at the top. The sleeve 18 is connected to the adjusting mechanism 27 and can be adjusted by the adjusting mechanism 27. The section is raised and lowered relative to the water receiving cavity 3. The opening above the sleeve 18 serves as the water outlet 7. The height of the water outlet 7 is changed by adjusting the raising and lowering of the sleeve 18 through the adjusting mechanism 27, thereby adjusting the drip pressure difference between the water outlet 7 and the water surface 16 of the water container 1. When in use, the water in the water container 1 enters the sleeve 18 through the U-shaped tube 17. After the sleeve 18 is filled with water, the water overflows from the opening above the sleeve 18 and falls into the water receiving cavity 3. The U-shaped tube 17 and the sleeve 18 deliver water to the water receiving cavity 3 through gravity or siphon principle. In use, this structure allows the water receiving chamber 3 to be pressed down so that the entire U-shaped tube 17 is below the water surface of the water container 1, enabling water to flow directly from the water container 1 through the U-shaped tube 17 into the sleeve 18 and fill the U-shaped tube 17. Alternatively, by adjusting the height of the water receiving chamber 3 above the water surface 16, the highest horizontal section of the U-shaped tube 17 can be positioned flush with the water surface 16 in the water container 1, ensuring that the U-shaped tube 17 is always full for normal use without needing to be refilled each time. This sleeve structure facilitates filling the U-shaped tube 17. The end of the U-shaped tube 17 that connects to the water container 1 can be connected to an opening at the bottom of the water receiving chamber 3, an opening on the side wall of the water receiving chamber 3, or it can pass through the side wall of the water receiving chamber 3 and then be inserted into the water.

[0048] The float 47 may be an inflatable float or a foam float, but is not limited to these two types of floats.

[0049] Preferably, the float 47 includes a control float 15 and a load-bearing float 2. The control float 15 and the load-bearing float 2 are independent of each other and do not interfere with each other. Both the control float 15 and the load-bearing float 2 float on the water surface 16. The adjustment mechanism 27 is provided on the control float 15, and the water receiving cavity 3 is provided on the load-bearing float 2.

[0050] The water receiving cavity 3 can be a cavity opened on the load-bearing float 2, or it can be an independent cavity fixed on the load-bearing float 2. The load-bearing float 2 supports the water receiving cavity 3, so that the water receiving cavity 3 floats on the water surface 16.

[0051] Two floats are provided. The load-bearing float 2 is used to support the water receiving cavity 3. Since the water receiving cavity 3 is connected to the second outlet 10 through the connecting hose 9, it is easily affected by external forces and moves up and down. Therefore, the adjustment mechanism 27 is set on another independent control float 15, so that the adjustment mechanism 27 and the water outlet 7 are not easily affected by other external forces and move up and down relative to the liquid surface, thereby improving the stability of the water outlet 7 and better ensuring that the height difference between the water outlet 7 and the liquid surface in the water container 1 is constant.

[0052] The floating drip irrigation system can automatically adjust the drip rate and whether to drip irrigate based on the environment.

[0053] Figures 5-7 As shown, for example, one solution involves controlling the rise and fall of the water outlet 7 by adjusting the temperature, thereby changing the height difference between the water outlet 7 and the water surface 16 in the water container 1. Specifically, the drip irrigation device also includes a sealed air storage chamber 48. The adjusting mechanism 27 includes a pneumatic cup 28 and a lever 44. The pneumatic cup 28 has an opening, and it is inverted with its opening facing downwards in the water in the water container 1. The water seal blocks the lower opening of the pneumatic cup 28, forming a closed air chamber 39 inside, causing the pneumatic cup 28 to float on the water surface 16. The middle part of the lever 44 is connected to the control float 15 for rotation. The rotation point acts as a fulcrum, allowing the lever 44 to swing around the fulcrum like a balance. The water outlet 7 is located at one end of the lever 44, and the other end of the lever 44 is connected to the pneumatic cup. 28. A gas guide pipe 38 is connected to the gas storage chamber 48. The vent of the gas guide pipe 38 extends into the gas chamber 39 inside the pneumatic cup 28. The gas guide pipe 38 connects the gas storage chamber 48 and the gas chamber 39 inside the pneumatic cup 28. When the temperature rises or falls, the gas inside the pneumatic cup 28 and the gas storage chamber 48 expands or contracts, causing the pneumatic cup 28 to rise or fall relative to the water surface 16 of the water container 1. When the pneumatic cup 28 rises or falls, it drives one end of the lever 44 to swing up or down, causing the other end of the lever 44, which is equipped with a water outlet 7, to swing down or up, so as to adjust the height difference between the water outlet 7 and the liquid surface inside the water container 1.

[0054] When the temperature rises, the air in the air storage chamber 48 and the pneumatic cup 28 expands. The air in the air storage chamber 48 is introduced into the pneumatic cup 28 through the air guide pipe 38. The air inside the pneumatic cup 28 pushes the pneumatic cup 28 to rise relative to the water surface 16 in the water container 1. The pneumatic cup 28 drives the left end of the lever 44 to rise, and the right end of the lever 44 connected to the sleeve 18 to fall, causing the water outlet 7 to fall relative to the water surface 16 in the water container 1. The drip pressure difference increases, and the dripping speed of the water from the water outlet 7 into the water receiving chamber 3 increases, thereby increasing the dripping speed of the water flow from the second outlet 10 of the drip irrigation device.

[0055] When the temperature drops, the air in the air storage chamber 48 and the pneumatic cup 28 contracts, causing the pneumatic cup 28 to sink. The pneumatic cup 28 drives the left end of the lever 44 to descend, while the right end of the lever 44, which is connected to the sleeve 18, rises. This causes the water outlet 7 to rise relative to the water surface 16 in the water container 1, reducing the drip pressure difference. The drip rate of water from the water outlet 7 into the water receiving chamber 3 slows down, thus slowing down the drip rate of the water flow from the second outlet 10 of the drip irrigation device. When the water outlet 7 rises above the water surface 16 in the water container 1, the liquid delivery pipe 6 stops delivering water into the water receiving chamber 3. All the water in the water receiving chamber 3 flows into the second outlet 10 from the connecting hose 9 and drips out. At this point, the drip irrigation device stops dripping.

[0056] This temperature control structure allows the drip irrigation system to operate at high temperatures and stop at low temperatures. For example, it starts drip irrigation when the temperature rises around 8 or 9 am and stops when the temperature drops around 4 or 5 pm, thus achieving drip irrigation during the day and no dripping at night. It automatically starts and stops based on temperature conditions even when unattended.

[0057] Preferably, one end of the lever 44 can be hinged to the pneumatic cup 28.

[0058] In addition, the control float 15 is provided with an upper limit part 33 and a lower limit part 34 located on the upper and lower sides of the lever 44. The upper limit part 33 and the lower limit part 34 are used to limit the highest and lowest swing height of one end of the lever 44. Specifically, the upper limit part 33 and the lower limit part 34 are located on the upper and lower sides of the lever 44 near the left end of the pneumatic cup 28. When the pneumatic cup 28 drives the left end of the lever 44 to rise to its highest height, the right end of the lever 44 drives the water outlet 7 to descend to its lowest height. At this time, the dripping pressure difference reaches its maximum, and the dripping speed of the water outlet 7 into the water receiving chamber 3 reaches its fastest. When the pneumatic cup 28 drives the left end of the lever 44 to descend to its lowest height, the right end of the lever 44 drives the water outlet 7 to rise to its highest height. At this time, the dripping pressure difference reaches its minimum, or the water outlet 7 moves above the water surface 16 in the water container 1, and the dripping speed of the water outlet 7 into the water receiving chamber 3 reaches its slowest, or the water outlet 7 stops dripping into the water receiving chamber 3. The upper limit part 33 and the lower limit part 34 limit the fastest and slowest dripping speeds of the drip irrigation device.

[0059] The upper limit part 33 and the lower limit part 34 can be adjusted in height as needed. Preferably, a vertical mounting frame 32 is fixed on the control float 15. The mounting frame 32 is provided with a slide rail 43 that runs through the front and rear. The upper limit part 33 and the lower limit part 34 are screws 13 inserted in the slide rail 43 and can slide up and down along the slide rail 43. One end of the screw 13 has a head that is larger than the width of the slide rail 43. The screw 13 is connected to a nut 42. When the nut 42 is tightened, it clamps the screw 13 to the front and rear sides of the mounting frame 32 with the head, so that the screw 13 is relatively fixed to the mounting frame 32. When it is necessary to adjust the height of the upper limit part 33 and the lower limit part 34, the nut 42 can be loosened for adjustment. Alternatively, a scale can be set on the mounting frame 32 for easy adjustment.

[0060] In addition, the bottom edge of the pneumatic cup 28 is provided with an exhaust notch or exhaust hole 46 for air to be discharged outward when the pneumatic cup 28 is raised to the exhaust position, and the pneumatic cup 28 is provided with a one-way air intake mechanism that allows only external air to enter the pneumatic cup 28.

[0061] Preferably, the one-way air intake mechanism includes a one-way air intake float 29 located inside the pneumatic cup 28. The one-way air intake float 29 floats on the water surface 16. The one-way air intake float 29 and the pneumatic cup 28 are independent of each other and do not interfere with each other. The one-way air intake float 29 has a cavity and has an air intake pipe 30 and an air outlet pipe 40. Both the air intake pipe 30 and the air outlet pipe 40 are connected to the cavity. Both the air intake pipe 30 and the air outlet pipe 40 have a vertical extension length. The opening of the air outlet pipe 40 is inserted into the water in the water container 1, and the opening of the air intake pipe 30 extends out of the pneumatic cup 28 and is exposed to the outside atmosphere. The air inlet pipe 30 is connected to the water surface 16 of the water container 1. When the air pressure in the pneumatic cup 28 rises and falls, the water column in the air outlet pipe 40 rises and falls synchronously. When the pneumatic cup 28 is under positive pressure, the air outlet pipe 40 is sealed by a liquid column. When the pneumatic cup 28 is under negative pressure, atmospheric gas passes through the air inlet pipe 30 into the cavity under atmospheric pressure, and then enters the air cavity 39 in the pneumatic cup 28 through the air outlet pipe 40. When the air pressure inside the pneumatic cup 28 is the same as the outside air pressure, the air outlet pipe 40 is sealed by the water in the water container 1. The height of the connection between the air outlet pipe 40 and the cavity inside the one-way air intake float 29 should be higher than the height of the water column inside the air outlet pipe 40 when the air pressure inside the pneumatic cup 28 is at its maximum, so that the water column inside the air outlet pipe 40 will not enter the cavity inside the one-way air intake float 29 even when it is at its highest, thus ensuring that the cavity inside the one-way air intake float 29 is always in a water-free state.

[0062] A floating counterweight 41 can be installed inside the one-way air intake float 29 for counterweighting. By adjusting the weight and position of the floating counterweight 41, the one-way air intake float 29 can be made to float upright on the water surface 16.

[0063] A waterproof cap 31 is connected to the inlet of the air intake pipe 30. The waterproof cap 31 prevents rainwater or cooling water from falling into the inlet of the air intake pipe 30. The waterproof cap 31 can be found in the brand Vespa Agent, model 150 outdoor pipe rain cap.

[0064] The one-way air intake float 29 floats in the pneumatic cup 28 without contacting it. The function of the one-way air intake float 29 is only to replenish air into the pneumatic cup 28 when there is negative pressure inside the pneumatic cup 28, thus sending external air into the pneumatic cup 28.

[0065] The exhaust position of the pneumatic cup 28 can be the position when the pneumatic cup 28 is about to separate from the water surface 16 of the water container 1, or the position where the pneumatic cup 28 drives the left end of the lever 44 to rise to the position where the left end of the lever 44 contacts the upper limit part 33.

[0066] When the temperature rises, the left end of lever 44 is driven by pneumatic cup 28 to rise until it contacts the upper limit part 33, limiting the further rise of pneumatic cup 28. At this time, pneumatic cup 28 is just at the exhaust position. If the temperature continues to rise, the air in the air storage chamber 48 and the air chamber 39 of pneumatic cup 28 expands, causing the air pressure to continue to rise. Excess gas will be discharged from the exhaust notch or exhaust hole 46 on pneumatic cup 28. When the temperature drops, the left end of lever 44 is driven by pneumatic cup 28 to fall until it contacts the lower limit part 34, limiting the further fall of pneumatic cup 28. At this time, the bottom of pneumatic cup 28 is immersed in water to a greater depth. If the temperature continues to drop, the air in the air storage chamber 48 and the air chamber 39 of pneumatic cup 28 contracts, causing the air pressure to continue to drop, forming a negative pressure. External air can replenish air into pneumatic cup 28 from the one-way air intake float 29. This can prevent the air pressure inside pneumatic cup 28 from being too high or too low, thus affecting the stability of pneumatic cup 28.

[0067] Specifically, the temperature control structure utilizes the temperature difference between day and night for control. For example, assuming a temperature difference of 6°C, when the temperature is at its lowest, the pneumatic cup 28 descends to its lowest position, and the left end of the lever 44 connected to the pneumatic cup 28 rests against the lower limit part 34. At this time, the water outlet 7 is higher than the water level 16 in the water container 1, and the drip irrigation device does not drip water. When the temperature rises, the pneumatic cup 28 can drive the left end of the lever 44 to rise, causing the right end of the lever 44 to drive the water outlet 7 to descend. Because the pneumatic cup 28 needs to overcome the resistance caused by gravity during the process of driving the left end of the lever 44 to rise, the rise is relatively slow. When the temperature rises by 3°C, the pneumatic cup 28 drives the left end of the lever 44 to rise, causing the right end of the lever 44 to drive the water outlet 7 to descend. The water outlet 7 descends to the same level as the water level 16 in the water container 1. At this time, the height difference between the water outlet 7 and the water level 16 in the water container 1 is 0. If the temperature continues to rise, the water outlet 7 will descend further. The water level drops below the water surface 16 in the water container 1, creating a drip pressure difference. At this time, the water in the water container 1 is transported to the water receiving chamber 3 through the liquid delivery pipe 6, and then flows from the first outlet 8 of the water receiving chamber 3 through the connecting hose 9 to the second outlet 10 of the water container 1, and drips onto the ground. As the temperature rises, the drip pressure difference increases, and the dripping speed of the water from the outlet 7 into the water receiving chamber 3 gradually increases. The dripping speed of the water from the second outlet 10 onto the ground also gradually increases. When the temperature continues to rise by 3°C, and the temperature has risen from the lowest temperature to 6°C, the pneumatic cup 28 drives the left end of the lever 44 to rise until the left end of the lever 44 contacts the upper limit part 33. At this time, the height difference between the outlet 7 and the water surface 16 in the water container 1 reaches its maximum, the drip pressure difference reaches its maximum, and the dripping speed of the water from the outlet 7 into the water receiving chamber 3 reaches its maximum. The dripping speed of the water from the second outlet 10 onto the ground also reaches its maximum.

[0068] Conversely, when the temperature is highest, the pneumatic cup 28 rises to its highest point, and the left end of the lever 44 connected to the pneumatic cup 28 rests against the upper limit part 33. At this time, the water dripping from the outlet 7 into the water receiving chamber 3 reaches its fastest drip rate, and the water dripping from the second outlet 10 onto the ground from the drip irrigation device reaches its fastest drip rate. When the temperature begins to drop, the pneumatic cup 28 descends, and the left end of the lever 44 descends along with the pneumatic cup 28. During the descent, due to the influence of gravity, the left end of the lever 44 descends relatively quickly during the cooling process. When the temperature drops by 2-3℃, the water dripping from the outlet 10 reaches its fastest drip rate. The water outlet 7 rises to the same height as the water surface 16 in the water container 1. At this time, the height difference between the water outlet 7 and the water surface 16 in the water container 1 is 0. When the temperature continues to drop by 2-3℃, the temperature has dropped by 4-6℃ from the highest temperature. At this time, the water outlet 7 is higher than the water surface 16 in the water container 1. The pneumatic cup 28 drives the left end of the lever 44 to descend until the left end of the lever 44 contacts the lower limit part 34. The drip irrigation device stops dripping water. As the temperature continues to drop, the drip irrigation device stops dripping water. This process requires air replenishment through the one-way air intake float 29.

[0069] The daily temperature difference will not remain at 6℃, and the temperature difference may vary. Different temperature differences cause the gas in the pneumatic cup 28 and the gas storage chamber 48 to expand and contract differently. The difference is offset by the exhaust of the pneumatic cup 28 or the replenishment of the one-way air intake float 29, so as to ensure the consistency of the operation of the pneumatic cup 28 when the temperature changes from rising to falling or from falling to rising.

[0070] The air storage chamber 48 can be set inside the load-bearing float 2. In this case, the load-bearing float 2 serves both to support the water receiving chamber 3 and as an air storage chamber. Preferably, the load-bearing float 2 is annular, and its internal volume can be set as needed. A drain pipe 37 is provided at the lowest point of the load-bearing float 2. The opening of the drain pipe 37 is detachably connected to a sealing cap 36. The function of the drain pipe 37 is to release the small amount of cooling water that has been generated inside the load-bearing float 2 over a long period of time.

[0071] Alternatively, the air storage chamber 48 can be an independent chamber set on the load-bearing float 2, or the air storage chamber 48 can be set on the water container 1, or it can be set on other floats in the water container 1 that are independent of the control float 15 and the load-bearing float 2.

[0072] Figure 8 As shown, another scheme for automatically regulating the drip rate and whether to perform drip irrigation based on environmental automation includes an adjustment mechanism 27 comprising a lever 44. The middle part of the lever 44 is rotatably connected to the control float 15, and the point of rotation serves as a fulcrum, allowing the lever 44 to swing around the fulcrum like a balance. The water outlet 7 is located at one end of the lever 44, and the other end of the lever 44 is provided with a water storage carrier 45, which can receive rainwater and store it. Preferably, the water storage carrier 45 can be a water storage container or an absorbent sponge.

[0073] When it rains, the water storage carrier 45 receives and stores rainwater, causing the weight of the left end of the lever 44 with the water storage carrier 45 to gradually increase. This causes the left end of the lever 44 with the water storage carrier 45 to lower, while the right end with the water outlet 7 rises. When the water outlet 7 rises above the water level 16 in the water container 1, the liquid delivery pipe 6 stops supplying water to the water receiving chamber 3, and the drip irrigation device stops dripping. When the rain stops and the weather clears, the water in the water storage carrier 45 gradually decreases through evaporation, causing the weight of the end of the lever 44 with the water storage carrier 45 to gradually decrease. This causes the left end of the lever 44 with the water storage carrier 45 to slowly rise, and the right end with the water outlet 7 rises. The right end of the outlet 7 slowly descends. When the water in the water storage carrier 45 evaporates to the point where the height of the outlet 7 is level with the water surface 16 of the water container 1, the plant needs watering. As the water in the water storage carrier 45 continues to evaporate, the outlet 7 descends below the water surface 16 of the water container 1, creating a drip pressure difference. Water from the water container 1 drips from the outlet 7 of the liquid delivery pipe 6 into the receiving chamber 3. At this point, the drip irrigation device begins to drip water, watering the plant. When the water in the water storage carrier 45 has completely evaporated, the outlet 7 descends to its lowest point, achieving the maximum drip pressure difference, and the drip rate of the second outlet 10 of the drip irrigation device reaches its fastest. During the evaporation process of the water in the water storage carrier 45, the weight of the end of the lever 44 connected to the water storage carrier 45 gradually decreases, allowing the end of the lever 44 with the outlet 7 to descend.

[0074] The length of time from when the rain stops to when the dripping resumes can be adjusted by the water storage capacity and evaporation area of ​​the water storage carrier 45.

[0075] Additionally, a crossbeam counterweight 35 can be installed at the end of the lever 44 to adjust the weight at both ends of the lever 44, thereby adjusting the center of gravity of the lever 44. For example, when the drip irrigation device is automatically adjusted by temperature control, one end of the lever 44 is the pneumatic cup 28, and the other end of the lever 44 is the water outlet 7. It is necessary to adjust the weight of the crossbeam counterweight 35 or the position of the counterweight 35 on the lever 44 so that the end of the lever 44 with the pneumatic cup 28 is heavier than the end of the lever 44 with the water outlet 7, so that when the gas expands, the pneumatic cup 28 can drive one end of the lever 44 to rise, and when the gas contracts, the pneumatic cup 28 can drive one end of the lever 44 to fall back.

[0076] The liquid delivery pipe 6 mentioned above can also be opened inside the lever 44. The lever 44 is provided with a liquid delivery pipe 6 arranged along its length. The inlet 5 of the liquid delivery pipe 6 is located at the left end of the lever 44, and the outlet 7 of the liquid delivery pipe 6 is located at the right end of the lever 44. The right end of the lever 44 can be swung up and down to adjust the height difference between the outlet 7 and the water surface 16 in the water container 1.

[0077] The aforementioned temperature and rain control functions are implemented automatically without power.

[0078] Alternatively, the rain control structure can be combined with the temperature control structure. The water storage carrier 45 can be added to the lever 44 within the temperature control structure, allowing the drip irrigation device to control both day and night temperature differences and stop drip irrigation during rainy days. When it is sunny, only the temperature control structure controls the height of the water outlet 7 by expanding or contracting the gas in the pneumatic cup 28 and the air storage chamber 48. When it rains, the water storage carrier 45 becomes heavier due to the stored water, preventing the pneumatic cup 28 from pushing the left end of the lever 44 to rise. The water outlet 7 is then raised above the water level 16 in the water container 1, and the drip irrigation device stops dripping. After the rain stops, the water in the water storage carrier 45 will gradually evaporate due to external environmental factors such as wind, temperature, and sunlight. Once the water in the water storage carrier 45 has completely evaporated, the drip irrigation device will again control the height of the water outlet 7 solely through the temperature control structure.

[0079] Figure 9 As shown, it can also be controlled by an electronic mechanism. For example, the adjusting mechanism 27 includes a lever 44, the middle of which is rotatably connected to the control float 15. The point of rotation acts as a fulcrum, allowing the lever 44 to swing around the fulcrum like a balance. The water outlet 7 is located at one end of the lever 44, and a magnetic metal part 49 is fixed to the other end of the lever 44. The control float 15 is equipped with an electromagnet 50 corresponding to the magnetic metal part 49. The electromagnet 50 is located above the magnetic metal part 49. When the electromagnet 50 is energized, it magnetically attracts the magnetic metal part 49, causing the end of the lever 44 with the water outlet 7 to descend. When the electromagnet 50 is de-energized, the end of the lever 44 with the magnetic metal part 49 falls back and separates from the electromagnet 50. The magnetic metal part 49 is an iron block.

[0080] The electromagnet 50 can be powered by a solar panel. Located above the iron block, the other end of the lever 44 has a water outlet 7. During the day, the solar panel generates electricity, and the electromagnet 50 magnetically attracts the iron block, causing it to lift one end of the lever 44, lowering the water outlet 7 and initiating dripping. At night, when the solar panel is not generating electricity, the electromagnet 50 no longer magnetically attracts the iron block, the end of the lever 44 with the iron block lowers, and the end with the water outlet 7 rises, shutting off the drip irrigation system. The electromagnet 50 can also be controlled by mains power. When controlled by mains power, a 24-hour timer switch needs to be set. For example, the timer switch can be set to turn on the drip irrigation at 8:00 AM and turn off at 5:00 PM to stop the drip irrigation.

[0081] Furthermore, the aforementioned electronic control mechanism can be combined with the water storage carrier 45. On rainy days, the water storage carrier 45 collects rainwater, raising the end of the lever 44 with the water outlet 7, causing the drip irrigation device to shut off. After the rain, when the weather clears up, the water storage carrier 45 is initially too heavy for the electromagnet 50 to attract the iron block, preventing the drip irrigation device from dripping water. As the water in the water storage carrier 45 gradually evaporates, the electromagnet 50 can attract the iron block. At this point, the ground plants need watering, and the electromagnet 50 magnetically attracts the iron block, causing the iron block to move one end of the lever 44 upwards, lowering the water outlet 7 and starting to drip water.

[0082] Both the rain control structure and the electrical control structure described above can adjust the weight of the counterweight block 35 on the crossbeam or its position on the lever 44 so that the weight of the end of the lever 44 with the water outlet 7 is lower than that of the other end, thereby ensuring the rise and fall of the other end of the lever 44 and achieving control over the height of the water outlet 7.

[0083] A counterweight can be installed on the aforementioned control float 15 to control the height of the lever 44.

[0084] In addition, the water container 1 is provided with a first water inlet 19, which can replenish water into the water container 1.

[0085] Figure 10 As shown, one or more floating drip irrigation devices can be connected to the same water source through the first water inlet 19, and the water source adds water to each water container 1 through the first water inlet 19.

[0086] The water source can be a water tank or pool. A water level controller can be installed inside the water tank or pool to control the water level. Since the water level in the water container 1 will be level with the water level in the water tank or pool when connected, the water level in the water container 1 is controlled by the water level controller, thereby controlling the water level in the water container 1 and maintaining the set water level in the water container 1 for irrigation. A water level controller can be referenced, for example, the water level controller of a toilet.

[0087] One or more liquid delivery pipes 6 can be installed inside the water container 1.

[0088] In addition, the water container 1 can be used in a mobile manner, can be hung up, or can be inserted into the ground.

[0089] When the water container 1 needs to be inserted into the ground for use, the bottom of the water container 1 is fixed with a fixing post 26 for insertion into the ground, and the head of the fixing post 26 is conical.

[0090] The outlet 7 of the liquid delivery pipeline 6 can also be set on a conventional adjustment mechanism 27, and the up and down movement can be adjusted by the conventional adjustment mechanism 27.

[0091] Figures 1-3As shown, the preferred conventional adjustment mechanism 27 includes a screw 13 and a movable frame 11. A vertically arranged positioning column 12 is fixed on the control float 15. The movable frame 11 is sleeved on the positioning column 12 and can slide up and down along the positioning column 12. A fixing plate 14 is fixed to the top of the positioning column 12. The screw 13 is rotatably connected to the fixing plate 14. The screw 13 is threadedly connected to the movable frame 11. When the screw 13 rotates, it drives the movable frame 11 to move up and down along the positioning column 12. The water outlet 7 is set on the movable frame 11. The height difference between the water outlet 7 and the water surface 16 in the water container 1 is adjusted by moving the movable frame 11 up and down.

[0092] We also have another solution for the regulating mechanism 27. For example, the regulating mechanism 27 includes a fixed frame fixed on the control float 15 and a retractable line set on the fixed frame. The outlet 7 of the liquid conveying pipe 6 is connected to one end of the retractable line. The outlet 7 of the liquid conveying pipe 6 can be controlled to move up and down by retracting or releasing the retractable line.

[0093] We also have another solution for the regulating mechanism 27. For example, the regulating mechanism 27 includes a clamp and a fixed frame fixed on the control float 15. The outlet 7 of the liquid conveying pipe 6 is fixed on the clamp, and the clamp is clamped on the fixed frame. The up and down movement of the outlet 7 of the liquid conveying pipe 6 is controlled by controlling the height of the clamp clamped on the fixed frame.

[0094] The adjustment mechanism 27 is not limited to the above-mentioned structures; any conventional structure capable of adjusting lifting and movement is applicable to this patent.

[0095] Figure 11 As shown, the above-mentioned adjustment mechanism 27 and water receiving cavity 3 can also be set on the same float 47. Preferably, the water receiving cavity 3 and the float 47 are integrally formed, that is, the water receiving cavity 3 itself is a float 47, and the adjustment mechanism 27 is installed on the water receiving cavity 3.

[0096] In addition, the outer wall of the water receiving cavity 3 is provided with an annular step 51. Since some water may accumulate in the connecting hose 9 and cannot flow to the second outlet 10, the weight of the connecting hose 9 is increased, causing the connecting hose 9 to pull down the water receiving cavity 3. When the water receiving cavity 3 descends relative to the water surface 16 in the water container 1 until the annular step 51 contacts the water surface 16, the buoyancy of the water receiving cavity 3 is increased to counteract the downward pull of the connecting hose 9, so that the water receiving cavity 3 will not continue to sink due to the downward pull of the connecting hose 9.

[0097] The above describes the internal drip-type floating drip irrigation device provided by this invention. Specific examples have been used to illustrate the principle and implementation of this invention. The descriptions of the embodiments are merely for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An internal drip-type floating water irrigation device, comprising a water container for holding liquid, characterized in that, The water container includes a water receiving chamber, an adjusting mechanism, a liquid delivery pipe, and a float on the liquid surface. The adjusting mechanism and the water receiving chamber are mounted on the float and move up and down with it. The liquid delivery pipe has an inlet and an outlet. The inlet of the liquid delivery pipe is connected to the inside of the water container and is lower than the liquid level inside the container. The outlet of the liquid delivery pipe is located inside the water receiving chamber and is connected to it. The outlet is mounted on the adjusting mechanism, which can adjust the height of the outlet to change the height difference between the outlet and the liquid level in the water container. The liquid delivery pipe is used to deliver the liquid from the water container to the water receiving chamber. The water receiving chamber has a first outlet for the liquid to flow out, and the water container has a second outlet. The first outlet is connected to the second outlet via a connecting hose. The float includes a control float and a load-bearing float, which are independent of each other and both float on the liquid surface. The adjustment mechanism is set on the control float, and the water receiving cavity is set on the load-bearing float.

2. The internal drip-type floating drip irrigation device according to claim 1, characterized in that, The liquid delivery pipeline includes a U-shaped tube and a sleeve. The sleeve is a water storage cavity with a sealed bottom and an open top. The sleeve is located inside the water receiving cavity and can move up and down relative to the water receiving cavity. The U-shaped tube is fixed to the water receiving cavity. One end of the U-shaped tube is connected to the water container as a water inlet. The other end of the U-shaped tube is inserted into the sleeve. The sleeve is connected to an adjustment mechanism, which adjusts the height relative to the water receiving cavity. The opening at the top of the sleeve serves as a water outlet.

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