Automatic irrigation device

Abstract

The utility model relates to water and soil conservation and landscape technical field provides an automatic irrigation device, include: water storage area and moisture monitoring area, moisture monitoring area is used to simulate water-containing soil, including casing, porous material and first elastic part, and the porous material is filled in the inside of casing, and the casing sets up at the top of first elastic part, and is provided with irrigation pipeline water distribution pipe between water storage area and casing, at least one water outlet valve is provided on the upstream section of irrigation pipeline, the automatic irrigation device still includes open valve structure and close valve structure, in the saturated state of porous material, open valve structure and casing are separated, in the water shortage state of porous material, the casing is lifted under the action of first elastic part, and the casing and open valve structure abut and gradually act on open valve structure until open water valve, along with the water level of water storage area drops, close valve structure closes water outlet valve, the utility model discloses can open and close water outlet according to the water shortage degree of land and the water storage condition of water storage area.

Description

Technical Field

[0001] This utility model relates to the fields of soil and water conservation and landscape technology, and in particular to an automatic irrigation device. Background Technology

[0002] In remote and barren mountainous areas, plants consume a large amount of water during the early stages of growth, requiring regular and measured irrigation. Otherwise, under water-scarce conditions, plant survival rates will be low and the revegetation effect will be poor. Furthermore, natural rainfall is unevenly distributed in these areas, meaning plants may require water during periods of rainfall scarcity. Large water sources are also scarce or located far away, making the construction of long-distance water delivery facilities costly. Therefore, irrigation systems are typically built at closer distances.

[0003] In the existing technology, irrigation devices usually only include a water storage tank. However, after the water storage tank is full, the opening of the water outlet valve and the water flow rate need to be manually controlled, which is a cumbersome operation and has high labor costs.

[0004] Therefore, how to provide an automatic irrigation device is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This utility model provides an automatic irrigation device to solve the shortcomings of existing water storage tank groups that require manual water discharge, which is cumbersome and has high labor costs.

[0006] This utility model provides an automatic irrigation device, including: a water storage area and a moisture monitoring area. The moisture monitoring area is used to simulate water-bearing soil and includes a shell, a porous material, and a first elastic element. The porous material fills the interior of the shell, and the shell is disposed on top of the first elastic element. A water distribution pipe for an irrigation pipeline is provided between the water storage area and the shell. At least one water outlet valve is provided on the upstream section of the irrigation pipeline. The automatic irrigation device also includes a valve opening structure and a valve closing structure; When the porous material is saturated, the valve opening structure detaches from the housing; when the porous material is dehydrated, the housing rises under the action of the first elastic element, and the housing abuts against the valve opening structure and gradually acts on the valve opening structure until the water outlet valve is opened. As the water level in the storage area drops, the valve closing structure shuts off the outlet valve.

[0007] An automatic irrigation device according to this utility model further includes: The sedimentation tank area is connected by an inlet channel and an outlet channel. The inlet channel is connected to a water source, and the outlet channel is connected to the water storage area. A sand retaining wall is also installed in the sedimentation tank area.

[0008] According to the present invention, an automatic irrigation device is provided, wherein the irrigation pipe includes: A water inlet pipe is provided along a first direction, and the water outlet valve is provided at the end of the water inlet pipe facing the water storage area; The main pipe is connected to the water inlet pipe, and the outlet of the main pipe is connected to the area of ​​plants to be watered. The water distribution pipe has one end connected to the main pipe and the other end connected to the interior of the shell; wherein, the first direction is parallel to the horizontal plane.

[0009] According to the present invention, an automatic irrigation device is provided, wherein the water outlet valve includes: valve; The second elastic element is parallel to the water inlet pipe and disposed on the top side of the water inlet pipe, and the other end of the second elastic element is connected to the valve; the preload of the second elastic element is along the first direction; The third elastic element has its top end perpendicular to the water inlet pipe and is disposed on the bottom side of the water inlet pipe; A pawl is connected at one end to the bottom end of the third elastic element, and the middle part of the pawl is hinged to the bottom side of the water inlet pipe. In the closed state of the water outlet valve, the pawl is engaged with the valve, and the valve blocks the water inlet of the water inlet pipe. A short rod is mounted on the pawl; the short rod is subjected to the force of the long lever in the valve opening structure, so that the pawl is separated from the valve, and the valve is opened under the force of the second elastic element.

[0010] According to the automatic irrigation device provided by this utility model, the water outlet valve further includes: A first connecting rod is hinged at one end to the valve, and the other end of the first connecting rod is connected to the second elastic element; in the closed state of the outlet valve, the angle between the first connecting rod and the valve is an acute angle; in the open state of the outlet valve, the first connecting rod, the second elastic element and the valve are all along a first direction, and the valve is located on the top side of the water inlet pipe.

[0011] According to the present invention, an automatic irrigation device is provided, wherein the valve opening structure is located inside the water storage area, and the valve opening structure includes: The second link is arranged perpendicular to the first direction, and the second link is used to abut or disengage from the housing; The third link is arranged along the first direction, and one end is hinged to the second link; A long lever is arranged perpendicularly to the third connecting rod, and a slot is provided on the long lever; When the outlet valve is closed, the short rod engages with the slot; when the porous material is dehydrated, the housing rises and contacts the second connecting rod, the long lever descends and presses down on the short rod, and the pawl moves downward.

[0012] According to the automatic irrigation device provided by this utility model, the side of the long lever is provided with a protrusion, and the number of the protrusions is the same as the number of the water outlet valves; the valve opening structure further includes: A limiting rod is fixed at its bottom end and is located parallel to the side of the long lever where the boss is located. A first buoyancy block is provided on the limiting rod. As the water level in the storage area rises, the first buoyancy block floats upward until it contacts the boss, thereby pushing the long lever to move away from the limiting rod, so that the relative position of the slot and the short rod changes.

[0013] According to the automatic irrigation device provided by this utility model, the valve opening structure further includes: A support shaft is fixedly installed, and the top end of the support shaft is hinged to the third connecting rod; The fourth elastic element is used to pull the third link back to its original position after the housing descends and disengages from the valve structure.

[0014] According to the present invention, an automatic irrigation device is provided, wherein the valve closing structure is disposed inside the water storage area, and the valve closing structure includes: Support rod, fixed at the top; A second buoyancy block is mounted on the support rod, and during descent, the second buoyancy block can push and close the valve and fix the valve to the pawl.

[0015] According to this utility model, an automatic irrigation device is also provided, wherein the water outlet valve includes three valves.

[0016] The automatic irrigation device provided by this utility model includes a water storage area and a moisture monitoring area. The moisture monitoring area is used to simulate water-bearing soil and includes a shell, a porous material, and a first elastic element. The porous material fills the interior of the shell, and the shell is located on top of the first elastic element. A water distribution pipe for the irrigation pipeline is provided between the water storage area and the shell. At least one outlet valve is provided in the upstream section of the irrigation pipeline. The automatic irrigation device also includes an opening valve structure and a closing valve structure. When the porous material is saturated, the opening valve structure detaches from the shell. When the porous material is short of water, the shell rises under the action of the first elastic element, and the shell abuts against the opening valve structure and gradually acts on the opening valve structure until the outlet valve is opened. As the water level in the water storage area drops, the closing valve structure closes the outlet valve. The automatic irrigation device provided by this utility model can automatically open and close the outlet according to the degree of soil water shortage and the water storage status of the water storage area, and control the single water output by setting the spacing of each outlet, thus solving the problems of insufficient water source and the need for manual operation. Attached Figure Description

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

[0018] Figure 1 This is a general sectional view of the automatic irrigation device provided by this utility model.

[0019] Figure 2 This is a cross-sectional view of the moisture monitoring area provided by this utility model.

[0020] Figure 3 This is a schematic diagram of the closed state of the water outlet valve provided by this utility model.

[0021] Figure 4 This is a schematic diagram of the open state of the water outlet valve provided by this utility model.

[0022] Figure 5 This is a side view of the water outlet valve provided by this utility model.

[0023] Figure 6 This is a side view of the valve opening structure provided by this utility model.

[0024] Figure 7 yes Figure 6 One of the enlarged schematic diagrams of a portion of the structure.

[0025] Figure 8 yes Figure 6 The second enlarged schematic diagram of part of the structure.

[0026] Figure 9 This is a schematic diagram of the outlet valve when the water level is low.

[0027] Figure 10 This is a schematic diagram showing the state of the water outlet valve when the water level is high and the moisture detection area is short of water.

[0028] Figure 11 This is a schematic diagram showing the state after the water level at the outlet valve drops.

[0029] Figure label: 100. Sedimentation tank area; 200. Water storage area; 300. Moisture monitoring area; 400. Irrigation pipeline; 110. Inlet channel; 120. Outlet channel; 130. Sand retaining wall; 210. Outlet valve; 220. Valve closing structure; 230. Valve opening structure; 211. Valve; 212. First connecting rod; 213. Second elastic element; 214. Third elastic element; 215. Pawl; 216. Short rod; 221. Support rod; 222. Second buoyancy block; 231. Long lever; 232. Slot; 233. Limiting rod; 234. First buoyancy block; 235. Second connecting rod; 236. Support shaft; 237. Third connecting rod; 238. Boss; 239. Fourth elastic element; 310. Shell; 320. Porous material; 330. First elastic element; 410. Water inlet pipe; 420. Main pipe; 430. Branch pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] The following is combined with Figures 1-11 This invention describes an automatic irrigation device.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides an automatic irrigation device, including a water storage area 200 and a moisture monitoring area 300.

[0033] The moisture monitoring zone 300 is used to simulate water-bearing soil and has an open top. The moisture monitoring zone 300 includes a shell 310, a porous material 320, and a first elastic member 330. The porous material 320 fills the interior of the shell 310, and the shell 310 is positioned on top of the first elastic member 330.

[0034] A branch pipe of the irrigation pipe 400 is provided between the water storage area 200 and the shell 310; at least one outlet valve 210 is provided on the upstream section of the irrigation pipe 400. The automatic irrigation device also includes an opening valve structure 230 and a closing valve structure 220. After irrigation or rainfall, the water content is high, and the first elastic element 330 is pressed down under the action of gravity, causing the opening valve structure 230 to detach from the shell 310 and cease to function. When the porous material 320 is short of water for a long time, the water content decreases, and the shell 310 rises under the action of the first elastic element 330. The shell 310 comes into contact with the opening valve structure 230 and gradually acts on the opening valve structure 230 until the outlet valve 210 is opened. As the water level in the water storage area 200 drops, the closing valve structure 220 closes the outlet valve 210.

[0035] The automatic irrigation device provided by this utility model simulates water-bearing soil through a moisture monitoring zone 300. The change in the moisture content of the porous material 320 causes the housing 310 to rise and fall under the action of the first elastic element 330. This causes the valve opening structure 230 to automatically trigger the water outlet valve 210 to open according to the soil's water shortage level, achieving precise irrigation based on the actual water shortage situation of the land and avoiding water waste or crop water shortage caused by improper irrigation timing. Simultaneously, the valve closing structure 220 automatically closes the water outlet valve 210 as the water level in the water storage zone 200 drops, enabling timely cessation of irrigation based on the water storage status of the water storage zone 200. The amount of water released at one time is the volume between the water levels of the two water outlet valves 210, achieving quantitative irrigation. Therefore, the automatic irrigation device can automatically open and close the water outlet valve 210 by comprehensively considering the soil water shortage level and the water storage status of the water storage zone 200. This not only greatly improves the intelligence and automation level of irrigation and reduces the cost and trouble of manual intervention, but also effectively saves water resources, ensures the scientific and effective nature of irrigation, and provides suitable water conditions for crop growth.

[0036] In one feasible embodiment of this utility model, a sedimentation tank area 100 is further included. The sedimentation tank area 100 is connected to an inlet channel 110 and an outlet channel 120. The inlet channel 110 is connected to a water source, and the outlet channel 120 is connected to a water storage area 200. A sand-retaining wall 130 is also provided in the sedimentation tank area 100. The sedimentation tank area 100 introduces water from the water source through the inlet channel 110 and supplies water to the water storage area 200 through the outlet channel 120, thus achieving preliminary purification of the water source through its own structure. The sand-retaining wall 130 can effectively slow down the water flow speed, causing impurities such as silt and particulate matter in the water to settle and separate in the sedimentation tank area 100, preventing impurities from entering the water storage area 200 with the water flow.

[0037] In one feasible embodiment of this utility model, the irrigation pipe 400 includes a receiving pipe 410, a main pipe 420, and a branch pipe 430, further optimizing the water flow distribution of the irrigation device. The receiving pipe 410 is arranged along a first direction parallel to the horizontal plane, and a water outlet valve 210 is provided at the end of the receiving pipe 410 facing the water storage area 200. This not only facilitates stable connection with the water storage area 200, but also allows the water outlet valve 210 at its end to achieve more stable on / off control under horizontal water flow conditions. The main pipe 420 is connected to the receiving pipe 410, and the outlet of the main pipe 420 is connected to the area of ​​the plant to be watered, which can efficiently transport water to the crop root zone, shorten the water flow path, reduce losses during water transport, and improve irrigation efficiency. One end of the water distribution pipe 430 is connected to the main pipe 420, and the other end of the water distribution pipe 430 is connected to the interior of the shell 310, which can synchronously introduce irrigation water into the porous material 320, so that the moisture monitoring area 300 can reflect the actual water content of irrigation in real time; wherein, the first direction is parallel to the horizontal plane.

[0038] like Figure 3 , Figure 4 and Figure 5 As shown, in a feasible embodiment of this utility model, the outlet valve 210 includes a valve 211, a second elastic element 213, a third elastic element 214, a pawl 215, and a short rod 216. The top end of the third elastic element 214 is perpendicular to the water pipe 410 and is disposed on the bottom side of the water pipe 410. One end of the pawl 215 is connected to the bottom end of the third elastic element 214, and the middle part of the pawl 215 is hinged to the bottom side of the water pipe 410, so that the pawl 215 can stably engage the valve 211 in the closed state, forming a double locking mechanism to prevent accidental opening due to water flow impact or vibration, and to ensure the reliability of the closed state. In the closed state of the outlet valve 210, the pawl 215 engages with the valve 211, and the valve 211 blocks the water inlet of the water pipe 410. Short rod 216 is mounted on pawl 215; short rod 216 is subjected to the force of valve opening structure 230 to separate pawl 215 from valve 211 and open valve 211.

[0039] In a feasible embodiment of this utility model, the second elastic member 213 is parallel to the water inlet pipe 410 and disposed on the top side of the water inlet pipe 410. The outlet valve 210 includes a first connecting rod 212, one end of which is hinged to the valve 211, and the other end of which is connected to the second elastic member 213, so that the preload of the second elastic member 213 can be applied to the valve 211 more reasonably through the first connecting rod 212. During the opening process of the outlet valve 210, the second elastic member 213 provides a pulling force to pull the valve 211. In the open state, the first connecting rod 212, the second elastic member 213, and the valve 211 are all along the first direction, and the valve 211 is located on the top side of the water inlet pipe 410, which avoids the valve from blocking the water flow, reduces water resistance to improve irrigation efficiency, and allows the restoring force of the elastic member to drive the valve action more directly, reducing frictional wear between components.

[0040] like Figure 6 As shown, in a feasible embodiment of this utility model, the valve opening structure 230 is located inside the water storage area 200. The valve opening structure 230 includes a second connecting rod 235, a third connecting rod 237, and a long lever 231. The second connecting rod 235 is arranged perpendicular to the first direction and is used to abut or disengage the housing 310 to ensure that the lifting displacement of the housing can be accurately captured. The third connecting rod 237 is arranged along the first direction, with one end hinged to the second connecting rod 235. The long lever 231 is arranged perpendicular to the third connecting rod 237, and a slot 232 is provided on the long lever 231.

[0041] When the outlet valve 210 is closed, the short rod 216 engages with the slot 232. In the absence of water in the porous material, the housing 310 rises and contacts the second connecting rod 235. This, in conjunction with the third connecting rod 237, causes the long lever 231 to descend and press down the short rod 216, moving the pawl 215 downwards to open the valve. This not only amplifies the minute displacement of the housing 310 to ensure reliable triggering of the valve opening action, but also ensures balanced force and sensitive response throughout the entire valve opening process, achieving precise linkage with changes in the moisture monitoring zone 300.

[0042] In one feasible embodiment of this utility model, a protrusion 238 is provided on the side of the long lever 231. The number of protrusions 238 is consistent with the number of outlet valves 210, ensuring that each outlet valve 210 can receive a trigger signal through the corresponding protrusion 238, avoiding interference during multi-valve control. The valve opening structure 230 also includes a limiting rod 233. The bottom end of the limiting rod 233 is fixed, and the limiting rod 233 is parallel to the side of the long lever 231 where the protrusion 238 is provided. A first buoyancy block 234 is provided on the limiting rod 233. As the water level in the water storage area 200 rises, the first buoyancy block 234 floats upward until it contacts the protrusion 238, thereby pushing the long lever 231 to move away from the limiting rod 233, so that only one protrusion in the slot 232 contacts the corresponding short rod 216, allowing the valve opening structure 230 to control the opening of a single valve 211 each time. Through automatic feedback based on water level and soil water shortage triggering mechanism in water monitoring zone 300, the entire irrigation device can open valve 211 according to soil demand, and can also control the opening of valve 211 at different heights according to the water level in the water storage area, further reducing manual intervention, improving the automation level and operational reliability of the device, and extending the service life of components.

[0043] like Figure 6 , Figure 7 and Figure 8 As shown, in a feasible embodiment of this utility model, the valve opening structure 230 further includes a support shaft 236 and a fourth elastic element 239. The support shaft 236 is fixedly installed, providing a stable rotation fulcrum for the third link 237. This ensures that the third link 237 can rotate stably around the fixed shaft when receiving the vertical force transmitted by the second link 235, avoiding force transmission loss or action deviation caused by force offset or shaking of the third link 237, effectively ensuring the efficiency and consistency of force transmission. Simultaneously, the top end of the support shaft 236 is hinged to the third link 237, making the relative movement between the third link 237 and the support shaft 236 smoother, reducing frictional resistance between components, thus reducing mechanical wear to extend service life and making the action response more sensitive. The fourth elastic element 239 is used to pull the third link 237 back to its original position after the housing 310 descends and disengages from the valve structure 230.

[0044] See you again Figure 1As shown, in a feasible embodiment of this utility model, the valve-closing structure 220 is disposed inside the water storage area 200, and the valve-closing structure 220 includes a support rod 221 and a second buoyancy block 222. The top end of the support rod 221 is fixedly disposed, and the second buoyancy block 222 passes through the support rod 221. The support rod 221 provides stable axial guidance for the second buoyancy block 222, ensuring that the second buoyancy block 222 can only rise and fall precisely along the support rod 221, avoiding movement deviation caused by water flow disturbance or component shaking, and ensuring the accuracy of valve-closing triggering. During the descent, the second buoyancy block 222 can push the valve 211 and fix the valve 211 to the pawl 215, realizing automatic valve closing without additional power, which simplifies the structure and reduces energy consumption. The re-fixation of the valve 211 and the pawl 215 forms a reliable lock.

[0045] It should be noted that the second buoyancy block 222 can only move up and down along the axial direction of the support rod 221. The lateral radius is the distance required for the valve 211 to close, ensuring that the valve 211 can be precisely engaged in the pawl 215 during the closing process. Moreover, the end of the pawl 215 away from the third elastic element 214 has a certain inclination. The hinged structure of the pawl 215 allows the valve 211 to push the pawl 215 down first and then smoothly slide into the pawl 215 during the closing process.

[0046] like Figure 6 , Figure 7 and Figure 8 As shown, in a feasible embodiment of this utility model, the water outlet valve 210 includes three valves, and the long lever 231 also has three corresponding slots 232 and protrusions 238. It should be noted that the structures of the three slots 232 are different, and the angles and widths of the three protrusions 238 are also different, so that only one valve 211 is opened at a time, avoiding water waste and making it more suitable for remote, barren, and water-scarce areas.

[0047] like Figure 9 As shown, when the water level is low, the descent of the long lever 231 has no effect due to the concave space in the slot 232. Figure 10 As shown, when the water level is high, the first buoyancy block 234 rises with the water level. When it rises above the corresponding boss 238, it pushes the long lever 231. The short lever 216 is located at the protruding position of the slot 232. The long lever 231 descends, pressing down the short lever 216. The pawl 215 opens downwards, and the valve 211 opens under the pull of the second elastic element 213. Water flows into the water inlet pipe 410 and then into the main pipe 420, finally entering the area of ​​plants to be irrigated. A small portion also enters the porous material 320 through the distribution pipe 430, increasing its water content and compressing the first elastic element 330 to reset it. During the watering process, the water level in the water storage area 200 gradually decreases. When it reaches the outlet, Figure 11As shown, the second buoyancy block 222 descends with the water level, pushing the valve 211 to close and fixing it with the pawl 215, completing one water discharge cycle.

[0048] In practical use, the amount of water discharged at one time can be controlled by adjusting the number and spacing of the water outlet valves 210. The water content threshold to be discharged can be adjusted by adjusting the elastic coefficient of the first elastic element 330 in the moisture monitoring zone 300.

[0049] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic irrigation device, characterized in that, It includes a water storage area (200) and a moisture monitoring area (300). The moisture monitoring area (300) is used to simulate water-bearing soil and includes a shell (310), a porous material (320), and a first elastic element (330). The porous material (320) fills the interior of the shell (310), and the shell (310) is located on top of the first elastic element (330). A branch pipe of an irrigation pipe (400) is provided between the water storage area (200) and the shell (310). At least one outlet valve (210) is provided on the upstream section of the irrigation pipe (400). The automatic irrigation device also includes a valve opening structure (230) and a valve closing structure (220). When the porous material (320) is saturated, the valve opening structure (230) disengages from the housing (310); When the porous material (320) is in a water-deficient state, the housing (310) rises under the action of the first elastic member (330), and the housing (310) abuts against the valve opening structure (230) and gradually acts on the valve opening structure (230) until the water outlet valve (210) is opened. As the water level in the water storage area (200) drops, the valve closing structure (220) closes the outlet valve (210).

2. The automatic irrigation device of claim 1, wherein, Also includes: The sedimentation tank area (100) is connected to an inlet channel (110) and an outlet channel (120). The inlet channel (110) is connected to a water source, and the outlet channel (120) is connected to the water storage area (200). A sand retaining wall (130) is also provided in the sedimentation tank area (100).

3. The automatic irrigation device of claim 1, wherein, The irrigation pipe (400) includes: A water inlet pipe (410) is provided along the first direction, and the water outlet valve (210) is provided at the end of the water inlet pipe (410) facing the water storage area (200). The main pipe (420) is connected to the water receiving pipe (410), and the outlet of the main pipe (420) is connected to the area of ​​plants to be watered; The water distribution pipe (430) has one end connected to the main pipe (420) and the other end connected to the interior of the housing (310); wherein the first direction is parallel to the horizontal plane direction.

4. The automatic irrigation device of claim 3, wherein, The outlet valve (210) includes: Valve (211); The second elastic element (213) is parallel to the water inlet pipe (410) and disposed on the top side of the water inlet pipe (410); the other end of the second elastic element (213) is connected to the valve (211); the preload of the second elastic element (213) is along the first direction; The third elastic element (214) is perpendicular to the water inlet pipe (410) and is disposed on the bottom side of the water inlet pipe (410); A pawl (215) is connected at one end to the bottom end of the third elastic member (214). The middle part of the pawl (215) is hinged to the bottom side of the water inlet pipe (410). In the closed state of the water outlet valve (210), the pawl (215) is engaged with the valve (211), and the valve (211) blocks the water inlet of the water inlet pipe (410). A short rod (216) is disposed on the pawl (215); the short rod (216) is subjected to the force of the long lever (231) in the valve opening structure (230) to separate the pawl (215) from the valve (211), and the valve (211) is opened under the force of the second elastic element (213).

5. The automatic irrigation device of claim 4, wherein, The outlet valve (210) also includes: The first connecting rod (212) is hinged at one end to the valve (211), and the other end of the first connecting rod (212) is connected to the second elastic element (213). In the closed state of the outlet valve (210), the angle between the first connecting rod (212) and the valve (211) is an acute angle. In the open state of the outlet valve (210), the first connecting rod (212), the second elastic element (213) and the valve (211) are all along the first direction, and the valve (211) is located on the top side of the water inlet pipe (410).

6. The automatic irrigation device of claim 5, wherein, The valve opening structure (230) is located inside the water storage area (200), and the valve opening structure (230) includes: The second link (235) is arranged perpendicular to the first direction, and the second link (235) is used to abut or disengage from the housing (310); The third link (237) is arranged along the first direction, and one end is hinged to the second link (235); The long lever (231) is perpendicular to the third connecting rod (237), and a slot (232) is provided on the long lever (231). When the outlet valve (210) is closed, the short rod (216) engages with the slot (232); when the porous material is in a water-deficient state, the housing (310) rises and contacts the second connecting rod (235), the long lever (231) descends and presses down the short rod (216), and the pawl (215) moves downward.

7. The automatic irrigation device of claim 6, wherein, The long lever (231) has protrusions (238) on its side, the number of which is the same as the number of the outlet valves (210); the valve opening structure (230) also includes: The limiting rod (233) is fixed at the bottom and is located parallel to the side of the long lever (231) where the boss (238) is located. The limiting rod (233) is provided with a first buoyancy block (234). As the water level in the water storage area (200) rises, the first buoyancy block (234) floats upward until it contacts the boss (238) to push the long lever (231) to move away from the limiting rod (233) so that the relative position of the slot (232) and the short rod (216) changes.

8. The automatic irrigation device of claim 7, wherein, The valve opening structure (230) also includes: A support shaft (236) is fixedly installed, and the top end of the support shaft (236) is hinged to the third connecting rod (237); The fourth elastic element (239) is used to pull the third link (237) back to its original position after the housing (310) descends and disengages from the valve structure (230).

9. The automatic irrigation device of claim 8, wherein, The valve closing structure (220) is disposed inside the water storage area (200), and the valve closing structure (220) includes: Support rod (221), fixed at the top; The second buoyancy block (222) is mounted on the support rod (221), and the second buoyancy block (222) can push the valve (211) and fix the valve (211) to the pawl (215) during the descent.

10. The automatic irrigation device according to any one of claims 1-9, characterized in that, The outlet valve (210) comprises three.

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