Farmland water-saving irrigation device

Abstract

The utility model relates to a farmland water-saving irrigation device. The utility model is suitable for the technical field of farmland irrigation. The technical problem to be solved by the application is to provide the farmland water-saving irrigation device. According to the technical scheme, the farmland water-saving irrigation device comprises a plurality of supports arranged in field ditches on the two sides of a farmland and arranged in the length direction of the farmland at intervals; the spraying pipe assembly is rotationally mounted on the bracket and is used for spraying and irrigating the farmland below the spraying pipe assembly; the water supply assembly communicates with the water inlet ends of the spraying pipe assemblies and is used for pressurizing water and feeding the water into the spraying pipe assemblies; the gear adjusting assembly is arranged on the support close to the water inlet end of the spraying pipe assembly, is in transmission connection with the spraying pipe assembly and is used for driving the spraying pipe assembly to rotate back and forth within a preset angle; the water power assembly is arranged in the water inlet end of the spraying pipe assembly, is in transmission connection with the gear adjusting assembly and can drive the gear adjusting assembly under the action of flowing water.

Description

Technical Field

[0001] This utility model relates to the field of farmland irrigation technology, and in particular to a water-saving irrigation device for farmland. Background Technology

[0002] Traditional stationary sprinkler irrigation systems are widely used in agricultural irrigation, but their limitations are becoming increasingly apparent. These systems typically consist of fixed sprinklers that spray water onto crops at a certain pressure. However, due to the fixed position of the sprinklers, some areas are often over-irrigated, especially those near the sprinklers, while areas further away may be under-irrigated. This uneven water distribution not only wastes water resources but can also lead to soil compaction, root hypoxia, and fertilizer loss, ultimately affecting crop growth and yield. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a water-saving irrigation device for farmland, addressing the aforementioned problems.

[0004] The technical solution adopted by this utility model is: a water-saving irrigation device for farmland, comprising:

[0005] Multiple supports are set up in the ditches on both sides of the farmland and arranged at intervals along the length of the farmland;

[0006] The spray pipe assembly is rotatably mounted on the bracket and is used to spray and irrigate the farmland below.

[0007] The water delivery assembly connects the inlet ends of multiple spray pipe assemblies and is used to pressurize and deliver water into the spray pipe assembly.

[0008] The gear adjustment assembly is mounted on a bracket near the water inlet end of the spray pipe assembly and is connected to the spray pipe assembly for driving the spray pipe assembly to reciprocate within a preset angle.

[0009] The hydrodynamic component is located inside the water inlet of the spray pipe assembly and is connected to the gear adjustment component for transmission. It can drive the gear adjustment component under the action of the flowing water.

[0010] Through the aforementioned technical means, water is delivered to each spray pipe assembly using a water delivery component, and then sprayed out at an appropriate pressure through the spray pipe assembly. The water flowing into the spray pipe assembly passes through a hydrodynamic component, which serves as a power source to drive the gear adjustment component. This reduces the dependence on external power sources. The gear adjustment component can drive the spray pipe assembly to rotate back and forth within a certain angle range, thereby achieving full coverage of the farmland below and improving the uniformity of irrigation.

[0011] In some embodiments, the gear adjustment assembly includes a protective shell, a missing gear, a reciprocating ring, a first toothed ring, and a transmission component. The protective shell is mounted on the bracket near the water inlet end of the spray pipe assembly. The reciprocating ring is slidably installed inside the protective shell. The top outer ring wall of the reciprocating ring is provided with an array of first teeth. The upper and lower sides of the inner ring wall of the reciprocating ring are symmetrically provided with an array of second teeth. The spray pipe assembly is provided with a first toothed ring that can mesh with the first teeth. The outer edge of the missing gear is provided with a portion of third teeth. The third teeth can mesh with at least a portion of the second teeth. The hydrodynamic component is connected to the missing gear via the transmission component. The transmission component is used to drive the missing gear to rotate around its own axis inside the reciprocating ring. The missing gear drives the reciprocating ring to slide horizontally back and forth inside the protective shell, so that the reciprocating ring drives the spray end of the spray pipe assembly to rotate back and forth.

[0012] In some embodiments, the transmission component includes a first gear and a connecting column. The connecting column is rotatably connected inside the protective shell. The first gear and a missing gear are sleeved on the connecting column. The first gear meshes with the hydrodynamic component. The first gear, the connecting column, and the missing gear are on the same axis.

[0013] In some embodiments, the protective shell has through holes on both side walls, and the reciprocating ring has first limiting rods at both ends along its sliding direction, with the first limiting rods slidably connected to the corresponding through holes.

[0014] In some embodiments, the initial state of the gear adjusting assembly is as follows: the third tooth of the missing gear meshes with the second tooth on the lower side of the inner ring wall of the reciprocating ring, the vertical symmetry line of the missing gear coincides with the vertical symmetry line of the reciprocating ring, and the initial orientation of the spraying end of the spray pipe assembly is vertically downward, so that the rotation of the missing gear can drive the reciprocating ring to move back and forth along its own sliding direction, thereby driving the spraying end of the spray pipe assembly to rotate back and forth within a preset angle.

[0015] In some embodiments, the spray pipe assembly includes a connecting water pipe, a spray pipe, and nozzles. The spray pipe is rotatably mounted on the bracket, and multiple nozzles are provided on the spray pipe along the axial direction. One end of the connecting water pipe is connected to the water inlet end of the spray pipe, and the other end of the connecting water pipe is connected to the water delivery assembly. The hydrodynamic assembly is provided inside the connection between the spray pipe and the connecting water pipe, and a sealing assembly is provided outside the connection between the spray pipe and the connecting water pipe. The sealing assembly is used to seal the gap at the connection between the spray pipe and the connecting water pipe.

[0016] In some embodiments, the hydrodynamic component includes centrifugal blades, a rotating shaft, a fixed rod, a stationary ring, and a second toothed ring. The second toothed ring is rotatably provided between the connection between the connecting water pipe and the nozzle. The second toothed ring is meshed with the gear adjustment component. The portion of the second toothed ring exposed above the outer wall of the connecting water pipe and the outer wall of the nozzle is symmetrically provided with stationary rings. The stationary rings on both sides slide against the outer wall of the connecting water pipe and the outer wall of the nozzle, respectively. The second toothed ring is provided with a fixed rod inside. The fixed rod is connected to the rotating shaft. The end of the rotating shaft away from the fixed rod is provided with multiple centrifugal blades along the circumferential direction.

[0017] In some embodiments, the sealing assembly includes a fixed shell, a rotating ring, a spring, and a second limiting rod. Fixed shells are symmetrically arranged on both sides of the second toothed ring. The fixed shells are respectively connected to the outer wall of the connecting water pipe and the outer wall of the spray pipe. The stationary ring is located inside the fixed shell. A rotating ring that can abut against the stationary ring is slidably arranged inside the fixed shell. A second limiting rod is connected to the side wall of the rotating ring facing away from the stationary ring. The end of the second limiting rod away from the rotating ring slides through the side wall of the fixed shell. A spring is sleeved on the outer wall of the second limiting rod. The two ends of the spring are respectively connected to the side wall of the rotating ring and the inner wall of the fixed shell.

[0018] In some embodiments, the water delivery assembly includes a water pump, a pumping pipe, and a delivery pipe. The input end of the water pump is connected to a water source via the pumping pipe, and the output end of the water pump is connected to the inlet end of the spray pipe assembly via the delivery pipe.

[0019] The beneficial effects of this utility model are:

[0020] 1. The water delivery component provides appropriate water pressure to the device, delivering water to each spray pipe assembly. The hydrodynamic component uses the water flowing inside the spray pipe assembly as a power source to drive the gear adjustment component. The gear adjustment component drives the spray pipe assembly to rotate back and forth within a certain angle range, so that multiple spray pipe assemblies can achieve full coverage of the farmland below, improving the uniformity of irrigation and thus improving the utilization rate of water resources.

[0021] 2. The gear adjustment component is driven by the kinetic energy of the flowing water through the hydrodynamic component. The hydrodynamic component replaces the traditional motor or other external power source to drive the gear adjustment component, reducing the dependence on external power source, reducing system energy consumption, and also reducing maintenance costs and complexity.

[0022] 3. By installing a sealing assembly at the connection between the nozzle and the connecting water pipe, leakage at this point is reduced, ensuring stable water pressure throughout the system. As the spray pipe assembly reciprocates driven by the gear adjustment assembly, the contact between the stationary ring in the hydrodynamic assembly and the rotating ring in the sealing assembly undergoes slight changes. The spring automatically adjusts its pressure on the rotating ring based on its position, ensuring a tight seal between the rotating and stationary rings. When the fluid attempts to leak through the gap between the rotating stationary and rotating rings, the friction between the sealing surfaces must be overcome to prevent leakage. The sealing assembly ensures a tight seal at the connection while allowing the nozzle to rotate freely within a certain range. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external view structure of this application.

[0024] Figure 2 This is a schematic diagram of the internal structure of the protective shell in this application.

[0025] Figure 3 This is a schematic diagram of the explosion structure inside the protective shell in this application.

[0026] Figure 4 This is a schematic diagram of the internal structure of the protective shell in this application from another perspective.

[0027] Figure 5 This is a cross-sectional structural diagram of the connection between the nozzle and the connecting water pipe in this application.

[0028] Figure 6 This is a partial structural diagram of the connection between the stationary ring and the pipeline in this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Bracket; 2. Spray pipe; 3. Nozzle; 4. Connecting water pipe; 5. Sealing assembly; 6. Transmission component; 7. Reciprocating ring; 8. First gear ring; 9. Hydrodynamic assembly; 10. Protective shell; 51. Fixed shell; 52. Moving ring; 53. Spring; 54. Second limit rod; 61. First gear; 62. Connecting column; 63. Missing gear; 71. First tooth; 72. Second tooth; 73. First limit rod; 91. Second gear ring; 92. Stationary ring; 93. Fixed rod; 94. Rotating shaft; 95. Centrifugal blade; 96. Limiting groove; 97. Snap-fit ​​part.

[0031] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0032] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.

[0033] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0035] Combination Figures 1 to 6 As shown, this embodiment is a water-saving irrigation device for farmland, including multiple supports 1, spray pipe assemblies, water delivery assemblies, gear adjustment assemblies, and hydrodynamic components 9. Multiple supports 1 are installed in the ditches on both sides of the farmland. Spray pipe assemblies are rotatably installed between the supports 1 on both sides. The spray pipe assemblies are used to spray and irrigate the farmland below. Multiple sets of supports 1 and multiple spray pipe assemblies are arranged at intervals along the length of the farmland. The water inlet ends of multiple spray pipe assemblies are all connected to water delivery assemblies, which pressurize and deliver water into the spray pipe assemblies. A gear adjustment assembly is installed on the support 1 near the water inlet end of the spray pipe assembly. The gear adjustment assembly is driven by the spray pipe assembly. A hydrodynamic component 9 is located inside the water inlet end of the spray pipe assembly. The hydrodynamic component 9 is driven by the gear adjustment assembly. The hydrodynamic component 9 drives the gear adjustment assembly under the action of water flowing inside the spray pipe assembly, causing the gear adjustment assembly to move the spray pipe assembly back and forth within a preset angle.

[0036] In some implementations, the spray pipe assembly includes a connecting water pipe 4, a spray pipe 2, and nozzles 3. The two ends of the spray pipe 2 are rotatably mounted on the top of the bracket 1 in the field ditches on both sides, so that the spray pipe 2 spans across the farmland. Multiple nozzles 3 are provided on the spray pipe 2 along the axial direction. One end of the connecting water pipe 4 is connected to the water inlet end of the spray pipe 2, and the other end of the connecting water pipe 4 is connected to a water delivery assembly. A hydrodynamic assembly 9 is provided inside the connection between the spray pipe 2 and the connecting water pipe 4, and a sealing assembly 5 is provided outside the connection between the spray pipe 2 and the connecting water pipe 4. The sealing assembly 5 is used to seal the gap at the connection between the spray pipe 2 and the connecting water pipe 4.

[0037] In some implementation schemes, the water delivery assembly includes a water pump, a pumping pipe, and a delivery pipe. The input end of the water pump is connected to a water source via the pumping pipe, and the output end of the water pump is connected to the inlet end of the spray pipe assembly via the delivery pipe. The inlet end of the spray pipe assembly is the inlet of the water pipe 4.

[0038] Water is pumped and pressurized from the water source, then pumped through the water pipeline to the connecting water pipe 4, then into the sprinkler pipe 2, and finally sprayed out through the nozzle 3 to irrigate the farmland.

[0039] In some implementation schemes, such as Figure 2 , Figure 3 and Figure 4 As shown, the gear adjustment assembly includes a protective shell 10, a missing gear 63, a reciprocating ring 7, a first gear ring 8, and a transmission component 6. The protective shell 10 is mounted on a bracket 1 near one end of the connecting water pipe 4. The reciprocating ring 7 is slidably installed inside the protective shell 10, and the sliding direction of the reciprocating ring 7 is perpendicular to the axial direction of the nozzle 2. The top outer ring wall of the reciprocating ring 7 is provided with an array of first teeth 71, and the upper and lower sides of the inner ring wall of the reciprocating ring 7 are symmetrically provided with an array of second teeth 72. The outer wall of the nozzle 2 is fitted with a first gear ring 8 that can mesh with the first teeth 71. The outer edge of the missing gear 63 is provided with a portion of third teeth, which can mesh with at least a portion of the second teeth 72. The hydrodynamic component 9 is connected to the missing gear 63 via the transmission component 6. The transmission component 6 is used to drive the missing gear 63 to rotate around its own axis in the reciprocating ring 7. The missing gear 63 drives the reciprocating ring 7 to slide horizontally back and forth in the protective shell 10, so that the reciprocating ring 7 drives the spraying end of the spray pipe assembly to rotate back and forth. The spraying end of the spray pipe assembly is the nozzle 3 on the spray pipe 2.

[0040] Furthermore, the transmission component 6 includes a first gear 61 and a connecting column 62. The connecting column 62 is rotatably connected inside the protective shell 10. The first gear 61 and a missing gear 63 are sleeved on the connecting column 62. The first gear 61 is meshed with the hydrodynamic component 9. The first gear 61, the connecting column 62 and the missing gear 63 are on the same axis.

[0041] Furthermore, the protective shell 10 has through holes on both sides of its protective shell 10, and the reciprocating ring 7 has first limiting rods 73 at both ends along its sliding direction. The first limiting rods 73 are slidably connected to the corresponding through holes.

[0042] Furthermore, the initial state of the gear adjustment assembly is as follows: the third tooth of the missing gear 63 meshes with the second tooth 72 on the lower side of the inner ring wall of the reciprocating ring 7; the vertical symmetry line of the missing gear 63 coincides with the vertical symmetry line of the reciprocating ring 7; and the initial orientation of the spraying end of the spray pipe assembly is vertically downward, so that the rotation of the missing gear 63 can drive the reciprocating ring 7 to move back and forth along its own sliding direction, thereby driving the spraying end of the spray pipe assembly to rotate back and forth within a preset angle.

[0043] In its initial state, the hydrodynamic component 9 drives the transmission component 6 under the action of water flow, converting fluid kinetic energy into mechanical energy. The transmission component 6 drives the missing gear 63 to rotate. Since the missing gear 63 only has part of the third tooth, it will intermittently mesh with the second teeth 72 on both sides of the reciprocating ring 7 during its rotation, causing the reciprocating ring 7 to produce horizontal reciprocating motion. Specifically, the nozzle 3 is initially oriented vertically downward. The third tooth of the missing gear 63 meshes with the second tooth 72 in the middle of the lower side of the inner ring wall of the reciprocating ring 7. During the rotation of the missing gear 63, the third tooth located on the first side of the symmetry line of the missing gear 63 meshes with the second tooth 72 on the reciprocating ring 7 located on the same side of the symmetry line, thereby driving the reciprocating ring 7 to move horizontally to the second side. Subsequently, the third tooth on the missing gear 63 rotates until it disengages from the second tooth 72 on the lower side of the inner ring wall of the reciprocating ring 7, and the third tooth located on the original second side of the symmetry line engages with the second tooth 72 on the upper side of the inner ring wall of the reciprocating ring 7, further driving the reciprocating ring 7 to move horizontally in the opposite direction. This continues until the vertical symmetry line of the missing gear 63 coincides with the vertical symmetry line of the reciprocating ring 7, at which point the reciprocating ring 7 returns to its central position. As the missing gear 63 continues to rotate, the third tooth on the first side of the initial position continues to engage with the second tooth 72 on the upper side of the inner ring wall of the reciprocating ring 7, driving the reciprocating ring 7 to continue moving to its reset position. This allows the reciprocating ring 7 to move back and forth on both sides of the vertical symmetry line, thereby causing the nozzle 3 to swing bilaterally around the central axis of the spray pipe 2, further expanding the spray range.

[0044] As the missing gear 63 rotates, the reciprocating ring 7 moves horizontally back and forth along the track inside the protective shell 10. At the same time, the first tooth 71 at the top of the reciprocating ring 7 is engaged with the first toothed ring 8 on the outer wall of the nozzle 2. The first toothed ring 8 drives the nozzle 2 to oscillate back and forth around its own axis. Ultimately, this causes the nozzle 3 on the nozzle 2 to oscillate back and forth within a set angle range, expanding the spraying area and improving the uniformity of irrigation.

[0045] In some implementation schemes, such as Figure 5 As shown, the hydrodynamic component 9 includes centrifugal blades 95, a rotating shaft 94, a fixed rod 93, a stationary ring 92, and a second toothed ring 91. A connecting water pipe 4 penetrates one side wall of the protective shell 10, and a nozzle 2 rotatably penetrates the other side wall of the protective shell 10. The connecting water pipe 4 and the nozzle 2 are aligned on the same axis and connected. A second toothed ring 91 is rotatably positioned between the connection points of the connecting water pipe 4 and the nozzle 2. The second toothed ring 91 meshes with a first gear 61. The portion of the second toothed ring 91 exposed above the outer walls of the connecting water pipe 4 and the nozzle 2 is symmetrically connected to stationary rings 92. The stationary rings 92 on both sides slide against the outer walls of the connecting water pipe 4 and the nozzle 2, respectively. A fixed rod 93 is located inside the second toothed ring 91, and the fixed rod 93 is connected to the rotating shaft 94. Multiple centrifugal blades 95 are circumferentially positioned at the end of the rotating shaft 94 furthest from the fixed rod 93.

[0046] Pressurized water is delivered into connecting water pipe 4 via a water supply pipe. Upon entering connecting water pipe 4, the water impacts the centrifugal blades 95 inside, causing them to rotate and thus rotating shaft 94. Shaft 94 is connected to second gear ring 91 via fixed rod 93. As shaft 94 rotates, fixed rod 93 transmits rotational force to second gear ring 91, causing it to rotate synchronously. Since second gear ring 91 meshes with first gear 61, its rotation drives first gear 61 to rotate, which in turn drives synchronous misaligned gear 63 to rotate via connecting column 62.

[0047] Furthermore, such as Figure 6 As shown, the two side rings 92 are provided with circumferential limiting grooves 96 on the side walls facing the connecting water pipe 4 and the nozzle 2. The outer walls of the connecting water pipe 4 and the outer walls of the nozzle 2 are provided with circumferential locking parts 97. The locking parts 97 and the limiting grooves 96 are engaged to ensure the relative rotation between the connecting water pipe 4, the first gear 61 and the nozzle 2, and to limit the axial direction of the connecting water pipe 4 and the nozzle 2, so as to prevent the connecting water pipe 4 or the nozzle 2 from coming off the connection of the stationary rings 92 along the axial direction during rotation.

[0048] The limiting groove 96 provides positioning space for the snap-fit ​​part 97, ensuring that the stationary ring 92 can rotate synchronously with the second toothed ring 91. The cooperation between the snap-fit ​​part 97 and the limiting groove 96 not only ensures that the connecting water pipe 4 and the spray pipe 2 can be fixed in the axial direction, preventing them from coming off along the axial direction during rotation, but also allows necessary rotational movement.

[0049] Furthermore, in this embodiment, the outer diameter of the first gear 61 is larger than the outer diameter of the second gear ring 91, which can reduce the rotational speed of the first gear 61 when the second gear ring 91 drives the first gear 61 to rotate.

[0050] When the outer diameter of the first gear 61 is larger than that of the second gear ring 91, the first gear 61 has more teeth while maintaining the same module. According to the basic principles of gear transmission, if the tooth ratio between the second gear ring 91 and the first gear 61 is different, their speed ratio will also change accordingly. The larger first gear 61, relative to the smaller second gear ring 91, will reduce the output speed while increasing the output torque. By reducing the speed, the movement of the entire gear adjusting assembly can be made smoother and more stable, reducing vibration and wear that may be caused by high-speed rotation and extending the service life of the equipment. Increasing the size of the first gear 61 can effectively increase the output torque, especially for loads such as rotating spray pipe assemblies that require sufficient torque.

[0051] In some implementation schemes, such as Figure 5As shown, the sealing assembly 5 includes a fixed shell 51, a moving ring 52, a spring 53, and a second limiting rod 54. Fixed shells 51 are symmetrically arranged on both sides of the second toothed ring 91. The fixed shells 51 are respectively connected to the outer wall of the connecting water pipe 4 and the outer wall of the spray pipe 2. The stationary ring 92 is located inside the fixed shell 51. The moving ring 52, which can abut against the stationary ring 92, is slidably arranged inside the fixed shell 51. The side wall of the moving ring 52 facing away from the stationary ring 92 is connected to the second limiting rod 54. The end of the second limiting rod 54 away from the moving ring 52 slides through the side wall of the fixed shell 51. The outer wall of the second limiting rod 54 is fitted with a spring 53. The two ends of the spring 53 are respectively connected to the side wall of the moving ring 52 and the inner wall of the fixed shell 51.

[0052] The moving ring 52 is pushed towards the stationary ring 92 by the action of the spring 53, forming an initial sealing contact between them. When water flows into the connecting water pipe 4 and is operated by the second toothed ring 91, the stationary ring 92 rotates synchronously with the second toothed ring 91. Under the continuous pressure provided by the spring 53, the moving ring 52 always remains tightly against the stationary ring 92, forming an effective sealing surface. Even when the nozzle 2 swings due to the drive of the gear adjustment assembly, a good sealing effect can be maintained, reducing the risk of leakage. Since the moving ring 52 can slide freely within the fixed housing 51, and the first limiting rod 73 restricts its movement only axially and not rotationally, the moving ring 52 can be slightly adjusted in position with the rotation of the stationary ring 92, while maintaining a seal, without hindering the necessary rotation of the nozzle 2.

[0053] The implementation principle of a water-saving irrigation device for farmland is as follows:

[0054] First, the water source is pumped and pressurized by a water pump, so that the water flow can overcome the pipe resistance and enter the connecting water pipe 4 through the water delivery pipe. After entering the connecting water pipe 4, the water flow pushes the centrifugal blades 95, which drive the rotating shaft 94 to rotate. The rotating shaft 94 is connected to the second gear ring 91 through the fixed rod 93, so that the second gear ring 91 rotates synchronously with the rotating shaft 94. By converting the kinetic energy of the water flow into mechanical energy, a power source is provided for the subsequent gear transmission.

[0055] Because the second gear ring 91 meshes with the first gear 61, and the outer diameter of the first gear 61 is larger than the diameter of the second gear ring 91, the second gear ring 91 drives the first gear 61 to rotate, thus achieving the effect of reducing the rotational speed and increasing the torque. The first gear 61 is connected to the missing gear 63 via the connecting post 62, thereby driving the missing gear 63 to rotate synchronously.

[0056] Since the missing gear 63 only has partial teeth, it can intermittently mesh with the second teeth 72 on the inner ring walls of the upper and lower sides of the reciprocating ring 7 during rotation, driving the reciprocating ring 7 to move back and forth in the horizontal direction. At the same time, the first tooth 71 at the top of the reciprocating ring 7 meshes with the first toothed ring 8 on the nozzle 2, causing the nozzle 2 to swing back and forth around its own axis.

[0057] By oscillating the spray pipe assembly within a certain angle range, the effective coverage area of ​​a single spray pipe can be significantly increased, reducing the uneven irrigation problem present in traditional fixed sprinkler systems. A more uniform spray pattern helps reduce over-irrigation or under-irrigation, improves water resource utilization efficiency, and promotes sustainable agricultural development.

[0058] Simultaneously, as the second toothed ring 91 rotates, causing the stationary ring 92 to rotate synchronously, the rotating ring 52 and the stationary ring 92 fit tightly together under the action of the spring 53, forming a narrow sealing surface. When the fluid medium attempts to leak through the gap between the rotating stationary ring 92 and the rotating ring 52, it needs to overcome the friction between the sealing surfaces to prevent fluid leakage, reduce water leakage at the connection between the second toothed ring 91, the nozzle 2, and the connecting water pipe 4, and further conserve water resources.

[0059] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A water-saving irrigation device for farmland, characterized in that, include: Multiple supports (1) are placed in the field ditches on both sides of the farmland and are arranged at intervals along the length of the farmland; The spray pipe assembly is rotatably mounted on the bracket (1) for spraying and irrigating the farmland below; The water delivery assembly connects the inlet ends of multiple spray pipe assemblies and is used to pressurize and deliver water into the spray pipe assembly. The gear adjustment assembly is located on the bracket (1) near the water inlet end of the spray pipe assembly and is connected to the spray pipe assembly for driving the spray pipe assembly to reciprocate within a preset angle. The hydrodynamic component (9) is located inside the water inlet of the spray pipe assembly and is connected to the gear adjustment component for transmission. It can drive the gear adjustment component under the action of the flowing water.

2. The farmland water-saving irrigation device according to claim 1, characterized in that: The gear adjustment assembly includes a protective shell (10), a missing gear (63), a reciprocating ring (7), a first gear ring (8), and a transmission component (6). The protective shell (10) is mounted on the bracket (1) near the water inlet end of the spray pipe assembly. The reciprocating ring (7) is slidably installed inside the protective shell (10). The top outer ring wall of the reciprocating ring (7) is provided with an array of first teeth (71), and the upper and lower sides of the inner ring wall of the reciprocating ring (7) are symmetrically provided with an array of second teeth (72). The spray pipe assembly is provided with a tooth that can interact with the first teeth (71). 1) The first toothed ring (8) meshes with each other. The outer edge of the missing gear (63) is provided with a portion of the third tooth. The third tooth can mesh with at least a portion of the second tooth (72). The hydrodynamic component (9) is connected to the missing gear (63) via the transmission component (6). The transmission component (6) is used to drive the missing gear (63) to rotate around its own axis in the reciprocating ring (7). The missing gear (63) drives the reciprocating ring (7) to slide horizontally back and forth in the protective shell (10), so that the reciprocating ring (7) drives the spraying end of the spray pipe assembly to rotate back and forth.

3. The farmland water-saving irrigation device according to claim 2, characterized in that: The transmission component (6) includes a first gear (61) and a connecting column (62). The connecting column (62) is rotatably connected inside the protective shell (10). The first gear (61) and a missing gear (63) are sleeved on the connecting column (62). The first gear (61) meshes with the hydrodynamic component (9). The first gear (61), the connecting column (62), and the missing gear (63) are on the same axis.

4. The farmland water-saving irrigation device according to claim 2, characterized in that: The protective shell (10) has through holes on both sides of its sidewalls, and the reciprocating ring (7) has first limiting rods (73) at both ends along its sliding direction. The first limiting rods (73) are slidably connected in the corresponding through holes.

5. A water-saving irrigation device for farmland according to claim 2, characterized in that, The initial state of the gear adjustment assembly is as follows: the third tooth of the missing gear (63) meshes with the second tooth (72) on the lower side of the inner ring wall of the reciprocating ring (7), the vertical symmetry line of the missing gear (63) coincides with the vertical symmetry line of the reciprocating ring (7), and the initial orientation of the spraying end of the spray pipe assembly is vertically downward, so that the rotation of the missing gear (63) can drive the reciprocating ring (7) to move back and forth along its own sliding direction, thereby driving the spraying end of the spray pipe assembly to rotate back and forth within a preset angle.

6. The farmland water-saving irrigation device according to claim 1, characterized in that: The spray pipe assembly includes a connecting water pipe (4), a spray pipe (2), and nozzles (3). The spray pipe (2) is rotatably mounted on the bracket (1). Multiple nozzles (3) are provided on the spray pipe (2) along the axial direction. One end of the connecting water pipe (4) is connected to the water inlet end of the spray pipe (2), and the other end of the connecting water pipe (4) is connected to the water delivery assembly. The water power assembly (9) is provided inside the connection between the spray pipe (2) and the connecting water pipe (4). A sealing assembly (5) is provided outside the connection between the spray pipe (2) and the connecting water pipe (4). The sealing assembly (5) is used to seal the gap at the connection between the spray pipe (2) and the connecting water pipe (4).

7. A water-saving irrigation device for farmland according to claim 6, characterized in that: The hydrodynamic component (9) includes centrifugal blades (95), a rotating shaft (94), a fixed rod (93), a stationary ring (92), and a second toothed ring (91). The second toothed ring (91) is rotatably provided between the connection point of the connecting water pipe (4) and the nozzle (2). The second toothed ring (91) is meshed with the gear adjustment component. The portion of the second toothed ring (91) exposed above the outer wall of the connecting water pipe (4) and the outer wall of the nozzle (2) is symmetrically provided with stationary rings (92). The stationary rings (92) on both sides slide against the outer wall of the connecting water pipe (4) and the outer wall of the nozzle (2), respectively. The fixed rod (93) is provided inside the second toothed ring (91). The fixed rod (93) is connected to the rotating shaft (94). The end of the rotating shaft (94) away from the fixed rod (93) is provided with multiple centrifugal blades (95) along the circumferential direction.

8. A water-saving irrigation device for farmland according to claim 7, characterized in that: The sealing assembly (5) includes a fixed shell (51), a moving ring (52), a spring (53), and a second limiting rod (54). The fixed shells (51) are symmetrically arranged on both sides of the second toothed ring (91). The fixed shells (51) are respectively connected to the outer wall of the connecting water pipe (4) and the outer wall of the spray pipe (2). The stationary ring (92) is located inside the fixed shell (51). The moving ring (52) that can abut against the stationary ring (92) is slidably arranged inside the fixed shell (51). The side wall of the moving ring (52) facing away from the stationary ring (92) is connected to the second limiting rod (54). The end of the second limiting rod (54) away from the moving ring (52) slides through the side wall of the fixed shell (51). The outer wall of the second limiting rod (54) is fitted with a spring (53). The two ends of the spring (53) are respectively connected to the side wall of the moving ring (52) and the inner wall of the fixed shell (51).

9. A water-saving irrigation device for farmland according to claim 1, characterized in that: The water delivery assembly includes a water pump, a pumping pipe, and a delivery pipe. The input end of the water pump is connected to a water source via the pumping pipe, and the output end of the water pump is connected to the inlet end of the spray pipe assembly via the delivery pipe.

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