A spraying device for agricultural irrigation

Abstract

This invention provides a spraying device for agricultural irrigation, relating to the field of agricultural irrigation equipment technology. It includes a right interface fixedly connected to the right side of the main pipeline and a left interface fixedly connected to the left side of the main pipeline. A protective shell is fitted over the left interface, and a fixing component is installed inside the protective shell. A telescopic tube is slidably connected within the fixing component, and a nozzle is connected to the top of the telescopic tube. To address the problem that buried sprinklers may have difficulty extending smoothly due to sediment accumulation and increased frictional resistance during use, a water-pressure driven linkage mechanism is installed at the bottom of the telescopic tube. This linkage mechanism generates a linkage lifting effect under the action of water flow, providing additional auxiliary force for the nozzle's lifting process, enabling the nozzle to extend smoothly and complete spraying even when obstructed by impurities.

Description

Technical Field

[0001] This invention relates to the field of agricultural irrigation equipment, and more specifically to a spraying device for agricultural irrigation. Background Technology

[0002] Agricultural irrigation refers to the proactive use of engineering facilities and management techniques by humans to transport and distribute water from water sources to farmland at the most appropriate time, in the most suitable amount and in the most appropriate manner in order to ensure agricultural production. This meets the specific water needs of crops at different growth stages, ensures their healthy growth, achieves stable and high yields, and effectively resists agricultural risks caused by the unreliability of natural rainfall in time and space.

[0003] Currently, most agricultural irrigation sprinkler systems are underground. However, these systems often experience problems during long-term use, such as the nozzles failing to extend properly. Because the nozzle area is close to the ground surface, during irrigation or after rain, mud, sand, and fine particles can easily fall around the nozzle with the water flow or gravity, gradually accumulating in the gaps of the telescopic structure. This obstructs water pressure when lifting the nozzle, resulting in problems such as the nozzle not being able to extend, slow movement, or uneven spraying, thus affecting the irrigation effect.

[0004] To address the aforementioned problems, there is an urgent need for a sprinkler system for agricultural irrigation. By installing a water-pressure driven linkage mechanism on the side wall of the pipe, additional mechanical lifting force can be provided when the sprinkler head is raised, allowing the sprinkler head to extend smoothly even when there is impurity accumulation or increased resistance, thus improving its extension and retraction capabilities and long-term stability. Summary of the Invention

[0005] In view of the problems raised in the background art, the present invention provides a spraying device for agricultural irrigation to solve the problems, and the present invention will be further described below.

[0006] An agricultural irrigation spraying device includes a main pipeline, a right interface fixedly connected to the right side of the main pipeline, and a left interface fixedly connected to the left side of the main pipeline. A protective shell is fitted onto the left interface, and a fixing member is fitted inside the protective shell. A telescopic tube is slidably connected inside the fixing member. A nozzle is fixedly connected to the top of the telescopic tube, and a linkage mechanism is provided on both sides of the bottom of the telescopic tube. A sealing component is rotatably connected to the top of the fixing member.

[0007] Preferably, the left interface is fixedly connected to the pipe opening with a first adapter pipe, the top of the first adapter pipe is fixedly connected to a second adapter pipe, and both sides of the second adapter pipe and the first adapter pipe are provided with connecting rod groups. Both ends of each connecting rod group are fixedly connected to a fixed block, and the fixed blocks at the bottom of the two connecting rod groups are fixedly connected to a support platform. The support platform is circumferentially fixedly connected to the outside of the first adapter pipe.

[0008] Preferably, a sealing gasket is slidably connected to one bottom end of the adapter pipe, and sliding frames are symmetrically fixedly connected to both sides of the bottom end of the sealing gasket. A spring is provided between the sliding frame and the sealing gasket, and a set of connecting rods is fixedly connected to the outer side of each sliding frame.

[0009] Preferably, one of the linkage groups includes a rotating shaft fixedly connected to the sliding frame. A first link and a second link are hinged on the rotating shaft. The first link and the second link are rotatably connected to the sliding frame through the rotating shaft, and the first link and the second link are sequentially hinged to the corresponding links in the adjacent linkage group through the rotating shaft.

[0010] Preferably, a sliding groove is provided on both sides of the fixing member, and a connecting block is slidably connected in each sliding groove. One end of each connecting block is fixedly connected to the bottom of the telescopic tube, and the other end of the connecting block is fixedly connected to the fixed block at the top of the two connecting rod assemblies.

[0011] Preferably, a sealing cloth is nested in the sliding groove on both sides of the fixing member, a connecting block is snapped between each sealing cloth, a roller is wound around both ends of each sealing cloth, and a torsion spring is provided between the two rollers.

[0012] Preferably, the sealing assembly includes a fixing ring fixedly connected to the top of the fixing member, and a plurality of skeletons are rotatably connected to the inner side of the fixing ring in the circumferential direction, and a rotating member located in the central structure is rotatably connected to the inner end of the skeleton.

[0013] Preferably, an elastic ring is provided between the frame and the rotating component, and a folded cloth is laid on the upper surface of the frame.

[0014] Beneficial Effects: Compared with existing technologies, the agricultural irrigation sprinkler device provided by this invention, by setting a linkage mechanism linked to the pipeline at the bottom of the telescopic pipe, allows the nozzle extension process to no longer rely solely on the direct push of the water flow. Instead, the linkage mechanism transmits the driving force generated by the water flow stably to the telescopic pipe, enabling smooth nozzle extension even when there is mud and sand accumulation around the nozzle and increased frictional resistance. This significantly reduces the risk of the nozzle failing to spray normally due to obstruction. Simultaneously, by setting a sealing component at the top of the fixing part that moves in tandem with the nozzle, the nozzle remains in a closed and protected state when not in operation. This effectively prevents soil, sand, and other impurities from falling into the device during downtime, reducing the possibility of the nozzle and telescopic structure being blocked or jammed by mud and sand. The combined effect of these structures not only improves the adaptability and reliability of the buried sprinkler device in complex soil environments but also helps extend the equipment's service life and reduce the frequency of maintenance, demonstrating significant practical value. Attached Figure Description

[0015] Figure 1 : A three-dimensional structural schematic diagram of the present invention; Figure 2 : A partial structural schematic diagram of the present invention; Figure 3 : Schematic diagram of the structure at point AB of this invention; Figure 4 : Schematic diagram of the linkage mechanism of the present invention; Figure 5 : Schematic diagram of the structure at point A of this invention; Figure 6 : Schematic diagram of the structure at point B of the present invention Figure 7 : Schematic diagram of the rotating component and frame structure of the present invention; In the diagram: 1-Main pipe, 101-Right interface, 102-Left interface, 11-Protective shell, 12-Fixing component, 121-Support platform, 122-Transfer pipe one, 123-Transfer pipe two, 13-Telescopic pipe, 14-Sprayer head, 2-Sealing gasket, 21-Sliding frame, 211-Fixing block, 212-First connecting rod, 213-Second connecting rod, 22-Spring, 23-Rotating shaft, 24-Connecting block, 25-Sealing cloth, 251-Torsion spring, 252-Roller, 3-Rotating component, 31-Folded cloth, 32-Frame, 33-Elastic ring, 34-Fixing ring. Detailed Implementation

[0016] Next, combine Figures 1-6 A specific embodiment of the present invention will be described in detail below.

[0017] refer to Figure 1 and Figure 2 An agricultural irrigation sprinkler system includes a main pipe 1, which is a U-shaped pipe. A right interface 101 is fixedly connected to the right side of the main pipe 1. The right interface 101 is mainly used to connect an external water supply device. A left interface 102 is fixedly connected to the left side of the main pipe 1. A protective shell 11 is fitted on the left interface 102 to cover and protect the inside of the pipe, preventing soil and impurities from entering and causing erosion. A fixing member 12 is fitted inside the protective shell 11. A telescopic tube 13 is slidably connected inside the fixing member 12. A nozzle 14 is fixedly connected to the top of the telescopic tube 13. The nozzle 14 has multiple water outlet holes evenly distributed along the circumference.

[0018] refer to Figures 1-4In actual use, loose soil particles, silt, or flying insects often fall to the top of the buried sprinkler head after it retracts, which can easily cause the sprinkler head to become stuck or even jammed when restarted. Relying solely on normal water pressure for direct lifting may result in difficulty in smooth extension. To solve this problem of difficulty in extension and retraction due to resistance caused by accumulated impurities, this embodiment has a linkage mechanism on both sides of the bottom of the telescopic tube 13, which can drive the telescopic tube 13 to rise smoothly, allowing the sprinkler head 14 to extend smoothly even in the presence of silt resistance. Furthermore, to prevent impurities from falling into the interior when not in use, a sealing component is also provided at the top of the fixing member 12, which can block the opening after the sprinkler head 14 retracts, effectively preventing silt from falling in.

[0019] The bottom sides of the telescopic tube 13 are provided with a linkage mechanism. This linkage mechanism uses water pressure to drive and through the stroke extension effect of multi-stage linkages, it converts the small water pressure displacement into a large stroke of the telescopic tube 13 for smooth lifting, thereby ensuring that the nozzle 14 can be fully extended and achieve uniform spraying even when there may be mud and sand resistance or low water pressure.

[0020] refer to Figure 4 The left interface 102 is fixedly connected to the pipe opening of the adapter pipe 122. The top of the adapter pipe 122 is fixedly connected to the adapter pipe 223. Both sides of the adapter pipe 223 and the adapter pipe 122 are provided with connecting rod groups. Both ends of each connecting rod group are fixedly connected to the fixing block 211. The fixing block 211 at the top of the two connecting rod groups is fixedly connected to the fixing member 12. The fixing block 211 at the bottom of the two connecting rod groups is fixedly connected to the support platform 121. The support platform 121 is circumferentially fixedly connected to the outside of the adapter pipe 122.

[0021] refer to Figure 5 ,(Right now Figure 3 At point A, to ensure the smooth ascent of the telescopic pipe 13, a sealing gasket 2 is slidably connected to the bottom end of the first adapter pipe 122. The sealing gasket 2 simultaneously abuts against the outlet of the main pipe 1, forming an initial seal. This effectively prevents external impurities from flowing back into the main pipe 1 when no water is flowing through. Furthermore, the inner wall thicknesses of the first adapter pipe 122 and the second adapter pipe 123 are different, with the inner diameter of the second adapter pipe 123 being larger than that of the first adapter pipe 122. When the sealing gasket 2 is pushed upwards by water pressure to the second adapter pipe 123 section, the gap between its periphery and the pipe wall increases, allowing water to flow more smoothly into the upper cavity through this gap, providing sufficient water pressure and flow rate for the subsequent drive linkage mechanism.

[0022] When the main pipeline 1 is opened and water is injected, the sealing gasket 2 will slide upward within the transfer pipe 122. The bottom ends of the sealing gasket 2 are symmetrically fixedly connected to sliding frames 21. The sliding frame 21 is a U-shaped frame structure. A spring 22 is provided between the sliding frame 21 and the sealing gasket 2. When the sealing gasket 2 is pressed and slides upward, the spring 22 will be compressed and deformed by the sliding frame 21 fixed to the sealing gasket 2. Furthermore, a set of connecting rods is fixedly connected to the outer side of each sliding frame 21.

[0023] One of the linkage groups includes a rotating shaft 23 fixedly connected to the sliding frame 21. A first link 212 and a second link 213 are hinged on the rotating shaft 23. The first link 212 and the second link 213 are rotatably connected to the sliding frame 21 through the rotating shaft 23. The first link 212, the second link 213 and the corresponding link in the adjacent linkage group are sequentially hinged through the rotating shaft 23 to form a multi-stage linkage transmission structure.

[0024] In this embodiment, the sliding frame 21 is specifically connected to the rotating shaft 23 of the second linkage group. This design is only an example; in practice, the number of linkage groups can be increased or decreased according to the required lifting stroke and water pressure conditions. Its working principle is as follows: when a certain linkage group (for example, the second section directly driven by the sliding frame 21) begins to unfold upward under water pressure, based on the motion transmission characteristics of the multi-link mechanism, subsequent linkage groups will be driven in sequence, resulting in a step-by-step unfolding in a coordinated manner. This transforms the small upward sliding displacement of the sealing gasket 2 into a large lifting motion of the telescopic tube 13.

[0025] To ensure smooth lifting and lowering of the telescopic tube 13 under the action of the connecting rod assembly, a sliding groove is provided on both sides of the fixing member 12. A connecting block 24 is slidably connected in each groove. One end of each connecting block 24 is fixedly connected to the bottom of the telescopic tube 13, and the other end of the connecting block 24 is fixedly connected to the fixing block 211 at the top of the two connecting rod assemblies. When the connecting rod assembly is gradually unfolded from the folded state, the connecting block 24 is driven to slide upward by the connecting rod assembly, thereby driving the telescopic tube 13 to rise vertically. Under the impact of water pressure, the telescopic tube 13 can slide and extend the nozzle 14 out from the fixing member 12 by the distance increasing effect of the connecting rod alone. Furthermore, to prevent water from leaking out at the groove of the fixing member 12, a sealing cloth 25 is nested in the groove on both sides of the fixing member 12. A connecting block 24 is snapped between each sealing cloth 25. In order to keep the sealing cloth 25 taut when the connecting block 24 slides so that water does not seep out from the gap, a roller 252 is wound around both ends of each sealing cloth 25. A torsion spring 251 is provided between the two rollers 252. The torsion spring 251 can keep the sealing cloth 25 taut at all times during the movement and winding of the sealing cloth 25, effectively solving the problem of water leakage during the expansion and contraction of the groove.

[0026] In the initial state, the sealing gasket 2 is supported by the spring 22 and pressed against the output port of the main pipeline 1 without being impacted by water pressure. At this time, all linkages are in a folded state, and the telescopic tube 13 and the nozzle 14 are completely housed inside the fixing member 12. The sealing cloth 25 is in a taut state under the action of the torsion spring 251 and covers the groove.

[0027] When an agricultural irrigation sprinkler is needed, first connect the external water supply device to the right interface 101. Water flows through the main pipe 1 and sprays out from the left interface 102. The water pressure impacts the sealing gasket 2, causing it to slide upward in the adapter pipe 122. The sealing gasket 2 then drives the sliding frames 21 on both sides to move upward synchronously. The spring 22 is also compressed and deformed. When the sliding frame 21 moves upward, it pushes the rotating shaft 23 of one of the connecting rod groups to move upward synchronously. When one of the connecting rod groups is pulled upward, the remaining connecting rod groups gradually unfold from bottom to top due to their connecting characteristics. At the same time as the connecting rod groups unfold, the fixed blocks 211 at the top of the connecting rod groups on both sides move upward, driving the connecting blocks 24 fixed to them to move upward at the same time. Finally, the connecting blocks 24 pull the telescopic tube 13 to rise smoothly within the fixed part 12.

[0028] Meanwhile, the sealing cloth 25 closely follows the movement of the connecting block 24. During the pulling process, the roller 252 is continuously tightened according to the action of the torsion spring 251, and always maintains the seal on the slide groove. At this time, the water flow flows from the circumference of the sealing gasket 2 into the space between the two connecting pipes 123. When the telescopic pipe 13 is driven to rise to a specific height by the linkage mechanism, the water flow enters the interior of the telescopic pipe 13 through the two connecting pipes 123 and is transported upward along the pipe. Finally, it is sprayed out from the water outlet of the nozzle 14. The mechanical extension effect of the linkage allows the nozzle to extend smoothly even in the presence of mud and sand.

[0029] When the spraying is complete and the telescopic pipe 13 and nozzle 14 are retracted, the external water supply device is turned off, the water pressure disappears, and according to the characteristics of the spring 22, the sliding frame 21 and the sealing gasket 2 move down and reset, so that the sealing gasket 2 is pressed against the outlet of the main pipeline 1 again. At the same time, under the action of the spring 22 and the gravity of the telescopic pipe 13, the connecting rod assembly retracts and folds from top to bottom in stages, and the telescopic pipe 13 is driven to descend smoothly through the connecting block 24 until it is completely retracted into the fixed part 12.

[0030] After the spraying operation is completed, when the telescopic pipe 13 and the nozzle 14 retract into the fixed part 12, if the water outlet is completely exposed, it is very easy for soil, sand and other impurities to fall directly into the device. Long-term accumulation may cause pipe blockage. Therefore, a sealing component is rotatably connected to the top of the fixed part 12 in a circumferential direction, which can effectively protect against the impact of impurities falling.

[0031] refer to Figure 6 and Figure 7 ,(Right now Figure 3 (at point B), the sealing assembly includes a retaining ring 34 fixedly connected to the top of the fixing member 12. The retaining ring 34 serves as the mounting base for the entire sealing structure. Several skeletons 32 are rotatably connected to the inner side of the retaining ring 34 in the circumferential direction. The skeletons 32 are made of stainless steel wire or engineering plastic with a certain degree of flexibility and are used to provide support and maintain the overall shape of the umbrella-shaped structure when the assembly is deployed.

[0032] refer to Figure 7 The inner end of the frame 32 is rotatably connected to a rotating component 3 located at the center of the structure. The rotating component 3 is positioned directly above the nozzle 14 and can move the frame 32 circumferentially as the nozzle 14 rises and falls. An elastic ring 33 is provided between the frame 32 and the rotating component 3. The elastic ring 33 can contract in the folded state, and provides a supporting and limiting function when unfolded. It also assists the frame 32 and the rotating component 3 in actively resetting when the telescopic tube 13 and the nozzle 14 retract. Furthermore, to prevent various hazards such as falling impurities, a folded cloth 31 is laid on the upper surface of the frame 32. The outer edge of the folded cloth 31 is fixed to the inner side of the fixing ring 34. The folded cloth 31 can be made of weather-resistant rubber-coated fabric or flexible PVC composite material, and can work reliably for a long time in outdoor humid and sun-exposed environments. Under the support of the frame 32 and the limiting action of the elastic ring 33, the folded cloth 31 can smoothly unfold with the rise and fall of the rotating part 3, allowing the telescopic tube 13 and the nozzle 14 to extend; when retracted, the folded cloth 31 closes with the frame 32, thereby achieving automatic blocking of the top opening.

[0033] In the initial state, the telescopic tube 13 and the nozzle 14 are completely housed inside the fixing member 12. At this time, each folded cloth 31 is gathered inward and closed under the contraction force of the elastic ring 33. All the frames 32 are folded synchronously, so that the overall umbrella-shaped structure formed by the folded cloth 31 and the frame 32 is tightly closed and tightly sealed at the top opening of the fixing member 12, forming a continuous physical barrier to effectively prevent external soil, sand and gravel and water and other impurities from entering the device.

[0034] When external water pressure acts on the inside of the device, pushing the telescopic tube 13 upward, the top of the nozzle 14 continuously pushes the rotating component 3 outward. The rotating component 3 drives the frame 32, which is hinged to it, to rotate outward synchronously around the junction shaft connected to the fixing ring 34 on its outer side. During this process, the folded cloth 31 connected to the frame 32 is gradually stretched open under the elastic tension of the elastic ring 33, so that it quickly unfolds and maintains a stable umbrella-shaped opening shape, allowing the rotating component 3 to unfold and adhere to the surface of the telescopic tube 13. This combined unfolding action ensures that the nozzle 14 can extend smoothly to the working position without obstruction, and that the fully unfolded umbrella-shaped structure can effectively block the area around the nozzle 14, preventing externally splashed mud, sand and other impurities from falling into the fixing component 12 inside the device through the gaps.

[0035] When the water pressure is released and the telescopic tube 13 retracts, the nozzle 14 moves downward and disengages from the rotating component 3. Under its own weight and the restoring force of the elastic ring 33, the rotating component 3 converges towards the center, and the frame 32 retracts inward under the contraction force of the elastic ring 33, causing each folded cloth 31 connected to it to rotate inward around the hinge axis connected to the fixing ring 34, achieving synchronous folding and resetting. Finally, the rotating component 3, each folded cloth 31, the frame 32, and the folded cloth 31 together return to the initial closed state, forming a complete and sealed umbrella-shaped covering layer that tightly covers the top opening of the fixing component 12, achieving reliable sealing and long-term dust prevention at the nozzle 14 outlet when not in operation.

[0036] This invention discloses an agricultural irrigation sprinkler system, mainly composed of a main pipeline 1, a protective shell 11, a fixing component 12, a telescopic pipe 13, a nozzle 14, a linkage mechanism, and a sealing assembly. It aims to solve problems commonly encountered in current buried sprinkler systems during long-term use, such as the nozzle failing to extend smoothly and the exposed nozzle opening easily becoming clogged by impurities. The overall structure of this device is simple, suitable for long-term outdoor working environments in farmland, and can continuously provide stable and uniform spraying performance under fluctuating water pressure conditions.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An agricultural irrigation sprinkler system, comprising a main pipeline (1), characterized in that: The right side of the main pipeline (1) is fixedly connected to a right interface (101), and the left side of the main pipeline (1) is fixedly connected to a left interface (102). A protective shell (11) is fitted on the left interface (102), and a fixing member (12) is fitted inside the protective shell (11). A telescopic tube (13) is slidably connected inside the fixing member (12). A nozzle (14) is fixedly connected to the top of the telescopic tube (13). A linkage mechanism is provided on both sides of the bottom of the telescopic tube (13), and a sealing component is rotatably connected to the top of the fixing member (12).

2. The agricultural irrigation spraying device according to claim 1, characterized in that: The left interface (102) is fixedly connected to the port of the adapter pipe one (122), and the top of the adapter pipe one (122) is fixedly connected to the adapter pipe two (123). The adapter pipe two (123) and the adapter pipe one (122) are provided with connecting rod groups on both sides. Each connecting rod group is fixedly connected to a fixed block (211) at both ends. The fixed blocks (211) at the bottom of the two connecting rod groups are fixedly connected to a support platform (121). The support platform (121) is circumferentially fixedly connected to the outside of the adapter pipe one (122).

3. The agricultural irrigation spraying device according to claim 2, characterized in that: The bottom end of the adapter pipe (122) is slidably connected to a sealing gasket (2), and the bottom ends of the sealing gasket (2) are symmetrically fixedly connected to sliding frames (21). A spring (22) is provided between the sliding frame (21) and the sealing gasket (2), and a set of connecting rods is fixedly connected to the outside of each sliding frame (21).

4. The agricultural irrigation spraying device according to claim 3, characterized in that: One of the linkage groups includes a rotating shaft (23) fixedly connected to the sliding frame (21). A first link (212) and a second link (213) are hinged on the rotating shaft (23). The first link (212) and the second link (213) are respectively connected to the sliding frame (21) through the rotating shaft (23). The first link (212) and the second link (213) are sequentially hinged to the corresponding link in the adjacent linkage group through the rotating shaft (23).

5. The agricultural irrigation spraying device according to claim 1, characterized in that: A sliding groove is provided on both sides of the fixing member (12), and a connecting block (24) is slidably connected in each sliding groove. One end of each connecting block (24) is fixedly connected to the bottom of the telescopic tube (13), and the other end of the connecting block (24) is fixedly connected to the fixed block (211) at the top of the two connecting rod groups.

6. The agricultural irrigation spraying device according to claim 5, characterized in that: A sealing cloth (25) is nested in the groove on both sides of the fixing member (12), and a connecting block (24) is snapped between each sealing cloth (25). A roller (252) is wound around both ends of each sealing cloth (25), and a torsion spring (251) is provided between the two rollers (252).

7. The agricultural irrigation spraying device according to claim 1, characterized in that: The sealing assembly includes a fixing ring (34) fixedly connected to the top of the fixing member (12), and a plurality of skeletons (32) are rotatably connected to the inner side of the fixing ring (34) in the circumferential direction. The inner end of the skeleton (32) is rotatably connected to a rotating member (3) located in the central structure.

8. The agricultural irrigation spraying device according to claim 1, characterized in that: An elastic ring (33) is provided between the frame (32) and the rotating part (3), and a folded cloth (31) is laid on the upper surface of the frame (32).

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