Agricultural water-saving irrigation device

Abstract

The utility model discloses an agricultural water-saving irrigation device which comprises an installation frame, an irrigation mechanism is arranged on the installation frame and comprises a water storage tank, a water pump, a flow dividing pipe, an installation plate, a flow dividing block, a water conveying pipe and a spray head, the water storage tank is installed on the top face of the installation frame, and the water pump is installed at the top end of the water storage tank; the flow dividing pipes are installed on the water pump, the multiple sets of installing plates are installed at the outer end of the installing frame, the flow dividing blocks are installed on the multiple sets of installing plates, the multiple sets of water conveying pipes are installed on the multiple sets of flow dividing blocks correspondingly, and the nozzles are installed at the bottom ends of the multiple sets of water conveying pipes. Flow control mechanisms are connected between the multiple groups of flow dividing blocks and the flow dividing pipes, and each flow control mechanism comprises an outer sleeve, a control sleeve, a through-flow pipe, a through hole, a connecting sleeve, a stud and a plugging rod, so that the technical problems that in the background technology, accurate adjustment cannot be conducted according to the actual water demand of crops, and the irrigation range of the irrigation technology is small are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of agriculture, and more specifically, it relates to an agricultural water-saving irrigation device. Background Art

[0002] In the existing technology, traditional irrigation systems usually adopt a fixed flow rate design and cannot be precisely adjusted according to the actual water requirements of crops. This rigid irrigation method ignores the different water requirements under different crops, different growth stages, and different soil conditions. For example, when the water requirement of crop seedlings is less, an excessive irrigation flow rate may cause the soil to be too wet and affect root development; while during the rapid growth period of crops, a fixed low flow rate may not be able to meet the water demand of plants. In addition, since the flow rate cannot be adjusted for local areas, it often leads to water surplus in some areas and water shortage in other areas. This unbalanced water distribution not only causes waste of water resources but also may trigger a series of agronomic problems such as soil compaction, nutrient loss, and even lead to a decline in crop yield and quality. In the long run, this inefficient use of water resources not only increases the agricultural production cost but also poses a serious threat to the sustainable development of water-scarce areas;

[0003] Another prominent problem is that the irrigation range of existing irrigation technologies is relatively small, which greatly limits the scale and efficiency of agricultural production. Traditional irrigation equipment, such as fixed sprinkler irrigation systems or drip irrigation systems, usually can only cover a limited area. This means that in large farms or vast farmlands, a large number of irrigation equipment need to be installed and maintained, which not only increases the initial investment and maintenance cost but also improves the complexity of management. The limited irrigation range also leads to problems with irrigation uniformity. Crops at different positions in the field may receive different amounts of water, resulting in uneven growth. In addition, small-scale irrigation also restricts the ability of farmers to uniformly manage and optimize large areas of farmland, reducing the overall agricultural production efficiency. In some areas with complex terrains or imperfect infrastructure, the limited irrigation range has become a bottleneck restricting agricultural development and hindering the process of agricultural modernization and scale. Therefore, developing irrigation technologies that can cover a larger range while maintaining irrigation uniformity is of great significance for improving agricultural production efficiency, saving water resources, and promoting the sustainable development of agriculture. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the utility model provides an agricultural water-saving irrigation device to solve the technical problems mentioned in the background art, namely, the inability to precisely adjust according to the actual water requirements of crops and the relatively small irrigation range of irrigation technologies.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present utility model provides the following technical solution: An agricultural water-saving irrigation device, including a mounting frame, an irrigation mechanism is provided on the mounting frame, the irrigation mechanism includes a water storage tank, a water pump, a shunt pipe, a mounting plate, a shunt block, a water delivery pipe and a nozzle. The water storage tank is installed on the top surface of the mounting frame, the water pump is installed at the top end of the water storage tank, the shunt pipe is installed on the water pump, multiple groups of mounting plates are provided and installed at the outer end of the mounting frame, the shunt block is installed on multiple groups of the mounting plates, multiple groups of water delivery pipes are respectively installed on multiple groups of the shunt blocks, the nozzles are installed at the bottom ends of multiple groups of the water delivery pipes, and a flow control mechanism is connected between multiple groups of the shunt blocks and the shunt pipe. The flow control mechanism includes an outer sleeve, a control sleeve, a flow-through pipe, through holes, a connecting sleeve, a stud and a plugging rod. The outer sleeve is installed on the top surface of the shunt sleeve, the control sleeve is rotatably installed at the top end of the outer sleeve, the flow-through pipe is installed inside the outer sleeve, multiple groups of through holes are distributed on the outer wall of the flow-through pipe, the connecting sleeve is installed on the inner wall of the control sleeve, the stud is threadedly connected and installed in the connecting sleeve, and the plugging rod is installed at the bottom end of the stud and slides inside the flow-through pipe.

[0008] The present utility model is further provided that a moving component is installed on the bottom surface of the mounting frame, and a crawler is provided on the moving component. This design enables the irrigation device to move freely between different farmland areas, greatly improving the flexibility and efficiency of irrigation. The use of the crawler enables the device to travel stably on soft, muddy or uneven ground, expanding the applicable range of the device, and is particularly suitable for the irrigation needs of large farms or complex terrains.

[0009] The present utility model is further provided that positioning members are provided on multiple groups of the mounting plates, multiple groups of the positioning members are installed on the top surfaces of multiple groups of the mounting plates, and multiple groups of the nozzles are installed on multiple groups of the positioning members. This design increases the flexibility and accuracy of the irrigation system. The operator can change the position and angle of the nozzles by adjusting the positioning members, so as to adapt to the heights and irrigation requirements of different crops. The use of multiple groups of nozzles expands the irrigation range and improves the irrigation efficiency.

[0010] The present utility model is further provided that multiple groups of the control sleeves are rotatably connected to the shunt pipe. This connection method enables the operator to easily adjust the position of each control sleeve, thereby precisely controlling the water flow rate of each branch pipe. This design increases the flexibility of the irrigation system, enabling it to perform personalized adjustment according to the water demand of different regions and improving the water resource utilization efficiency.

[0011] The present utility model is further configured such that a stop block is installed at the top end of the stud. The setting of the stop block prevents the stud from rising excessively during adjustment, avoiding damage to the control mechanism, which increases the safety and durability of the device. At the same time, it also provides a clear adjustment range for the operator, simplifying the operation process.

[0012] The present utility model is further configured such that a limiting strip is installed on the inner wall of the flow-through pipe. There are multiple groups of the limiting strips. A limiting groove is formed on the outer wall of the plugging rod. There are multiple groups of the limiting grooves and they are slidably connected to the multiple groups of the limiting strips. This structural design prevents the plugging rod from rotating in the flow-through pipe, ensuring the stability and accuracy of the plugging rod. The setting of multiple groups of limiting strips and limiting grooves increases the stability of the connection, making the water flow control more precise, thereby realizing more accurate irrigation control.

[0013] The present utility model is further configured such that a limiting mechanism is provided on the outer side of the outer sleeve. The limiting mechanism includes a rotating sleeve, a main gear, a screw barrel, a screw rod, a secondary gear, a limiting sleeve, a locking sleeve, a locking block, and a locking groove. The rotating sleeve is rotatably installed on the outer sleeve. There are multiple groups of the screw barrels installed on the outer sleeve. There are multiple groups of the screw rods, and they are all rotatably installed on the screw barrels. The secondary gear is installed at the top ends of the multiple groups of the screw rods and meshes with the main gear. The limiting sleeve is threadedly connected and installed on the multiple groups of the screw rods. The locking sleeve is installed on the outer wall of the control sleeve. There are multiple groups of the locking blocks, and they are slidably installed on the limiting sleeve. There are multiple groups of the locking grooves, and they are all provided on the outer wall of the locking sleeve. This complex design of the limiting mechanism realizes the precise locking of the position of the control sleeve. This design also allows the operator to quickly unlock and re-lock when needed, improving the flexibility of use of the device.

[0014] The present utility model is further configured such that a push spring is connected between the outer ends of the multiple groups of the locking blocks and the limiting sleeve. The setting of the push spring greatly improves the reliability and response speed of the limiting mechanism.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides an agricultural water-saving irrigation device, which has the following

[0017] beneficial effects:

[0018] 1. Through the combination of the water storage tank, water pump, shunt pipe, mounting plate, shunt block, water delivery pipe, and sprinkler head, the irrigation mechanism realizes the efficient distribution and utilization of water resources. This mechanism allows water to be evenly distributed throughout the irrigation area, improving the irrigation efficiency. In addition, the design of multiple groups of mounting plates and positioning parts enables the position and angle of the sprinkler head to be flexibly adjusted to meet the needs of different crops and terrains. The setting of the moving component and crawler increases the mobility of the device, enabling it to move easily between different areas and expanding the irrigation range.

[0019] 2. The flow control mechanism realizes the precise control of water flow through the ingenious cooperation of the outer sleeve, control sleeve, flow-through pipe, through-hole, connecting sleeve, stud, and plugging rod. The operator can adjust the position of the plugging rod in the flow-through pipe by rotating the control sleeve, thereby changing the amount of water passing through the through-hole. The design of the limiting strip and limiting groove ensures the stability and accuracy of the movement of the plugging rod. This design allows for independent and precise control of the water output of each nozzle, achieving precise irrigation and greatly improving the water resource utilization efficiency. The setting of the stop block prevents the excessive movement of the stud, increasing the safety and durability of the device.

[0020] 3. The limiting mechanism effectively prevents the accidental rotation of the control sleeve through the combination of the rotating sleeve, main gear, screw barrel, screw rod, driven gear, limiting sleeve, locking sleeve, locking block, and locking groove. When the operator adjusts the position of the control sleeve, the limiting mechanism can be activated by rotating the rotating sleeve. The meshing of the main gear and the driven gear drives the screw rod to rotate, which in turn drives the limiting sleeve to move up and down. When the limiting sleeve moves to an appropriate position, the locking block slides into the locking groove of the locking sleeve under the action of the pushing spring, thereby locking the position of the control sleeve. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of an agricultural water-saving irrigation device in the present utility model;

[0022] Figure 2 It is a schematic diagram of the bottom view structure of the irrigation mechanism in the present utility model;

[0023] Figure 3 It is a schematic diagram of the connection structure between the irrigation mechanism and the flow control mechanism in the present utility model;

[0024] Figure 4 It is a schematic diagram of the sectional structure of the flow control mechanism in the present utility model;

[0025] Figure 5 It is a schematic diagram of the sectional structure of the limiting mechanism in the present utility model.

[0026] In the figure: 1. Mounting frame; 2. Water storage tank; 3. Water pump; 4. Shunt pipe; 5. Mounting plate; 6. Shunt block; 7. Water delivery pipe; 8. Nozzle; 9. Outer sleeve; 10. Control sleeve; 11. Flow-through pipe; 12. Through-hole; 13. Connecting sleeve; 14. Stud; 15. Plugging rod; 16. Moving assembly; 17. Crawler; 18. Positioning member; 19. Stop block; 20. Limiting strip; 21. Limiting groove; 22. Rotating sleeve; 23. Main gear; 24. Screw barrel; 25. Screw rod; 26. Driven gear; 27. Limiting sleeve; 28. Locking sleeve; 29. Locking block; 30. Locking groove; 31. Pushing spring. Detailed Embodiment

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0028] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0029] In the present utility model, unless otherwise stated, the orientations such as "upper and lower" are generally in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left and right" are generally in the left and right shown in the drawings; "inside and outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0030] Please refer to Figures 1 - 5 , an agricultural water-saving irrigation device, which includes a mounting frame 1. An irrigation mechanism is provided on the mounting frame 1. The irrigation mechanism includes a water storage tank 2, a water pump 3, a shunt pipe 4, a mounting plate 5, a shunt block 6, a water delivery pipe 7 and a spray head 8. The water storage tank 2 is installed on the top surface of the mounting frame 1, the water pump 3 is installed at the top end of the water storage tank 2, the shunt pipe 4 is installed on the water pump 3, multiple groups of mounting plates 5 are arranged on the outer end of the mounting frame 1, the shunt block 6 is installed on multiple groups of mounting plates 5, multiple groups of water delivery pipes 7 are respectively installed on multiple groups of shunt blocks 6, the spray head 8 is installed at the bottom end of multiple groups of water delivery pipes 7, and a flow control mechanism is connected between multiple groups of shunt blocks 6 and the shunt pipe 4. The flow control mechanism includes an outer sleeve 9, a control sleeve 10, a through-flow pipe 11, a through-hole 12, a connecting sleeve 13, a stud 14 and a plugging rod 15. The outer sleeve 9 is installed on the top surface of the shunt sleeve, the control sleeve 10 is rotatably installed at the top end of the outer sleeve 9, the through-flow pipe 11 is installed inside the outer sleeve 9, multiple groups of through-holes 12 are distributed on the outer wall of the through-flow pipe 11, the connecting sleeve 13 is installed on the inner wall of the control sleeve 10, the stud 14 is threadedly connected and installed inside the connecting sleeve 13, and the plugging rod 15 is installed at the bottom end of the stud 14 and slides inside the through-flow pipe 11.

[0031] A moving component 16 is installed on the bottom surface of the mounting frame 1. A crawler 17 is provided on the moving component 16. The moving component 16 is installed on the bottom surface of the mounting frame 1 to provide the moving ability for the whole device. The crawler 17 is arranged on the moving component 16, which increases the adaptability and stability of the device on various terrains.

[0032] Multiple groups of positioning members 18 are provided on multiple groups of mounting plates 5. Multiple groups of positioning members 18 are arranged on the top surfaces of multiple groups of mounting plates 5. Multiple groups of spray heads 8 are installed on multiple groups of positioning members 18. The positioning members 18 are installed on the top surface of the mounting disc, providing a basis for the installation and adjustment of the spray heads 8. The setting of multiple groups of positioning members 18 allows multiple spray heads 8 to be installed simultaneously, realizing a wider irrigation coverage.

[0033] The multiple groups of control sleeves 10 are all rotatably connected to the shunt tube 4 . The control sleeves 10 and the shunt tube 4 are rotatably connected, allowing the control sleeves 10 to rotate freely on the shunt tube 4 .

[0034] A stopper 19 is installed at the top of the stud 14 to limit the upward movement of the stud 14. The setting of the stopper 19 prevents the stud 14 from rising excessively during the adjustment process, thereby avoiding damage to the control mechanism.

[0035] A limit strip 20 is installed on the inner wall of the flow tube 11, and there are multiple groups of limit strips 20. A limit groove 21 is opened on the outer wall of the blocking rod 15, and there are multiple groups of limit grooves 21 and slidingly connected with the multiple groups of limit strips 20. The limit strip 20 is installed on the inner wall of the flow tube 11 and forms a sliding connection with the limit groove 21 on the outer wall of the blocking rod 15. This design ensures the linear movement of the blocking rod 15 in the flow tube 11.

[0036] In this embodiment, first, the operator moves the device to the area that needs irrigation through the moving assembly 16, and then injects water into the water tank 2. When irrigation is needed, the water pump 3 starts to pump water from the water tank 2 and transports it to the diversion pipe 4. The diversion pipe 4 distributes the water to multiple diversion blocks 6, and then transports it to each nozzle 8 through the water delivery pipe 7. The nozzle 8 is installed on the mounting plate 5, and the position and angle can be adjusted as needed. This design allows water to be evenly distributed to the entire irrigation area, improving irrigation efficiency. The flow control mechanism controls the irrigation amount by adjusting the water flow. When When the water flow needs to be adjusted, the operator can rotate the control sleeve 10. The rotation of the control sleeve 10 drives the connecting sleeve 13 and the stud 14 to rotate, so that the stud 14 moves up and down in the connecting sleeve 13, and the blocking rod 15 at the bottom end of the stud 14 slides up and down in the flow tube 11, thereby changing the amount of water passing through the through hole 12. When the blocking rod 15 moves up and down, the limiting groove 21 on its outer wall slides with the limiting strip 20 on the inner wall of the flow tube 11 to ensure the stability and accuracy of the blocking rod 15. This design allows precise control of the water output of each sprinkler 8 to achieve precise irrigation.

[0037] See also Figure 5, as an implementation of the limit mechanism: A limit mechanism is provided on the outer side of the outer sleeve 9. The limit mechanism includes a rotating sleeve 22, a main gear 23, a screw barrel 24, a screw rod 25, a driven gear 26, a limit sleeve 27, a locking sleeve 28, a locking block 29 and a locking groove 30. The rotating sleeve 22 is rotatably installed on the outer sleeve 9. Multiple groups of screw barrels 24 are installed on the outer sleeve 9. Multiple groups of screw rods 25 are rotatably installed in the screw barrels 24. The driven gear 26 is installed at the top of multiple groups of screw rods 25 and meshes with the main gear 23. The limit sleeve 27 is threadedly connected and installed on multiple groups of screw rods 25. The locking sleeve 28 is installed on the outer wall of the control sleeve 10. Multiple groups of locking blocks 29 are slidably installed on the limit sleeve 27. Multiple groups of locking grooves 30 are provided on the outer wall of the locking sleeve 28. This complex limit mechanism design achieves precise locking of the position of the control sleeve 10. By rotating the rotating sleeve 22, the entire mechanism can be driven to work, causing the limit sleeve 27 to move up and down, thereby driving the locking block 29 to engage or disengage with the locking groove 30. This design not only improves the accuracy of control but also greatly increases the stability and reliability of the device. The arrangement of multiple groups of screw barrels 24 and screw rods 25 ensures the smoothness of the limiting action and prevents deformation or damage that may be caused by single-point stress.

[0038] A push spring 31 is connected between the outer ends of multiple groups of locking blocks 29 and the limit sleeve 27. When the limit sleeve 27 moves down to an appropriate position, the push spring 31 will immediately push the locking block 29 into the locking groove 30 to achieve quick locking. This design not only ensures the rapid completion of the locking action but also increases the firmness of the lock. Even in the case of vibration or slight collision, the push spring 31 can continuously provide pressure to maintain the locked state.

[0039] More specifically, the limit mechanism is used to fix the position of the control sleeve 10 and prevent accidental rotation. After the operator adjusts the position of the control sleeve 10, rotate the rotating sleeve 22 to drive the main gear 23 to rotate. The main gear 23 meshes with the driven gear 26, causing the screw rod 25 to rotate in the screw barrel 24. The rotation of the screw rod 25 drives the limit sleeve 27 to move up and down. When the limit sleeve 27 moves down to an appropriate position, multiple groups of locking blocks 29 slide into the locking grooves 30 on the outer wall of the locking sleeve 28 under the action of the push spring 31, thereby locking the position of the control sleeve 10. This design ensures the stability of the irrigation setting and prevents accidental adjustment caused by vibration or other external forces.

[0040] In summary, when the overall device is in use or operation: First, the operator moves the device to the area that needs to be irrigated through the moving component 16. Then, water is injected into the water storage tank 2. When irrigation is required, the water pump 3 is started to pump water out of the water storage tank 2 and transport it to the shunt pipe 4. The shunt pipe 4 distributes the water to multiple shunt blocks 6, and then it is transported to each nozzle 8 through the water delivery pipe 7. The nozzles 8 are installed on the mounting plate 5 and can be adjusted in position and angle as needed. This design allows the water to be evenly distributed throughout the irrigation area, improving the irrigation efficiency. The flow control mechanism controls the irrigation volume by adjusting the water flow. When the water flow needs to be adjusted, the operator can rotate the control sleeve 10. The rotation of the control sleeve 10 drives the connection sleeve 13 and the stud 14 to rotate, causing the stud 14 to move up and down within the connection sleeve 13. The blocking rod 15 at the bottom end of the stud 14 slides up and down within the through-flow pipe 11 accordingly, thereby changing the amount of water passing through the through-hole 12. When the blocking rod 15 moves up and down, the limiting groove 21 on its outer wall slides in cooperation with the limiting strip 20 on the inner wall of the through-flow pipe 11, ensuring the stability and accuracy of the blocking rod 15. This design allows for precise control of the water output of each nozzle 8, achieving precise irrigation.

[0041] The limiting mechanism is used to fix the position of the control sleeve 10 and prevent accidental rotation. After the operator adjusts the position of the control sleeve 10, the rotating sleeve 22 is rotated, driving the main gear 23 to rotate. The main gear 23 meshes with the driven gear 26, causing the screw rod 25 to rotate within the screw barrel 24. The rotation of the screw rod 25 drives the limiting sleeve 27 to move up and down. When the limiting sleeve 27 moves down to an appropriate position, multiple groups of locking blocks 29 slide into the locking grooves 30 on the outer wall of the locking sleeve 28 under the action of the pushing spring 31, thereby locking the position of the control sleeve 10. This design ensures the stability of the irrigation setting and prevents accidental adjustment caused by vibration or other external forces.

[0042] Among all the solutions mentioned above, for the connection between two components, welding, the cooperation connection of bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An agricultural water-saving irrigation device, comprising a mounting frame (1), characterized in that: An irrigation mechanism is provided on the mounting frame (1). The irrigation mechanism includes a water storage tank (2), a water pump (3), a shunt pipe (4), a mounting plate (5), a shunt block (6), a water delivery pipe (7), and a nozzle (8). The water storage tank (2) is installed on the top surface of the mounting frame (1). The water pump (3) is installed at the top end of the water storage tank (2). The shunt pipe (4) is installed on the water pump (3). A plurality of groups of mounting plates (5) are provided and installed at the outer end of the mounting frame (1). The shunt block (6) is installed on the plurality of groups of mounting plates (5). A plurality of groups of water delivery pipes (7) are respectively installed on the plurality of groups of shunt blocks (6). The nozzles (8) are installed at the bottom ends of the plurality of groups of water delivery pipes (7). A flow control mechanism is connected and arranged between the plurality of groups of shunt blocks (6) and the shunt pipe (4). The flow control mechanism includes an outer sleeve (9), a control sleeve (10), a flow-through pipe (11), a through hole (12), a connecting sleeve (13), a stud (14), and a plugging rod (15). The outer sleeve (9) is installed on the top surface of the shunt sleeve. The control sleeve (10) is rotatably installed at the top end of the outer sleeve (9). The flow-through pipe (11) is installed inside the outer sleeve (9). A plurality of groups of through holes (12) are distributed on the outer wall of the flow-through pipe (11). The connecting sleeve (13) is installed on the inner wall of the control sleeve (10). The stud (14) is threadedly connected and installed inside the connecting sleeve (13). The plugging rod (15) is installed at the bottom end of the stud (14) and slides inside the flow-through pipe (11).

2. The agricultural water-saving irrigation device according to claim 1, characterized in that: A moving component (16) is installed on the bottom surface of the mounting frame (1), and a crawler belt (17) is provided on the moving component (16).

3. The agricultural water-saving irrigation device according to claim 2, characterized in that: multiple groups Positioning members (18) are provided on the mounting plates (5). A plurality of groups of positioning members (18) are installed on the top surfaces of the plurality of groups of mounting plates (5), and the plurality of groups of nozzles (8) are installed on the plurality of groups of positioning members (18).

4. An agricultural water-saving irrigation device according to claim 3, characterized in that: The plurality of groups of control sleeves (10) are rotatably connected to the shunt pipe (4).

5. An agricultural water-saving irrigation device according to claim 4, characterized in that: A stop block (19) is installed at the top end of the stud (14).

6. The agricultural water-saving irrigation device according to claim 5, characterized in that: Limit strips (20) are installed on the inner wall of the flow-through pipe (11). A plurality of groups of limit strips (20) are provided. Limit grooves (21) are formed on the outer wall of the plugging rod (15). A plurality of groups of limit grooves (21) are provided and are slidably connected to the plurality of groups of limit strips (20).

7. An agricultural water-saving irrigation device according to claim 6, characterized in that: A limiting mechanism is provided on the outer side of the outer sleeve (9). The limiting mechanism includes a rotating sleeve (22), a main gear (23), a screw barrel (24), a screw rod (25), a driven gear (26), a limiting sleeve (27), a locking sleeve (28), a locking block (29) and a locking groove (30). The rotating sleeve (22) is rotatably installed on the outer sleeve (9). Multiple groups of the screw barrel (24) are installed on the outer sleeve (9). Multiple groups of the screw rod (25) are rotatably installed on the screw barrel (24). The driven gear (26) is installed at the top of multiple groups of the screw rod (25) and meshes with the main gear (23). The limiting sleeve (27) is threadedly connected and installed on multiple groups of the screw rod (25). The locking sleeve (28) is installed on the outer wall of the control sleeve (10). Multiple groups of the locking block (29) are slidably installed on the limiting sleeve (27). Multiple groups of the locking groove (30) are provided on the outer wall of the locking sleeve (28).

8. An agricultural water-saving irrigation device according to claim 7, characterized in that: multiple groups A push spring (31) is connected between the outer end of the locking block (29) and the limiting sleeve (27).

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