Arc-shaped water spraying nozzle device of sprinkling irrigation robot

Abstract

The application belongs to the technical field of agricultural irrigation facilities, and particularly relates to a double-outlet arc-shaped water spraying nozzle device of a sprinkling robot, which comprises a shunt main body, the shunt main body is a tee structure and has a T shape, further comprises arc-shaped water outlet pipes, two arc-shaped water outlet pipes are respectively connected to two water outlet ends of the shunt main body, wherein the pipe body of the arc-shaped water outlet pipe has an arc-shaped outward bending structure, the pipe body is smooth, the two arc-shaped water outlet pipes are left-right symmetrical and expand outward and downward for pulling apart the water outlet spacing, the outward bending angle of the arc-shaped water outlet pipe is 30 DEG to 45 DEG, and at least one water outlet is arranged on the lower end side wall of each arc-shaped water outlet pipe and is arranged on the side of the two water outlet pipes facing outward. In the application, water flows into the arc-shaped water outlet pipe through the shunt main body, first flows through the pipe section with the integrated counterweight structure to complete flow stabilization, and then is sprayed outward through the lateral water outlet, so that directional irrigation of crop roots is realized.

Description

Technical Field

[0001] This invention belongs to the field of agricultural irrigation facilities technology, and particularly relates to a dual-outlet arc-shaped sprinkler head device for a sprinkler robot. Background Technology

[0002] Existing sprinkler irrigation robots generally suffer from drawbacks when operating in complex and ever-changing field environments, such as limited spray width, uneven irrigation uniformity, insufficient wind resistance, and cumbersome maintenance.

[0003] When faced with field crops of varying heights and complex wind conditions, it is easy for water to accumulate and run off directly below the nozzles, while insufficient water is available in the sprayed edge areas. This affects the uniformity of crop growth and results in a waste of water and fertilizer.

[0004] Meanwhile, in windy conditions, the sprinkler heads will oscillate continuously at low frequencies, causing deviations in the spray trajectory and affecting the uniformity of irrigation. In windy weather, large areas of irrigation blind spots may even appear, affecting irrigation quality and failing to meet the requirements of farmland for precise and stable irrigation.

[0005] In addition, most existing sprinklers adopt the method of direct downward spraying or high-altitude throwing: the impact force of the water flow from the bottom is concentrated, which can easily wash away the surface soil and cause local water accumulation and siltation under the sprinkler, damaging the surface soil structure; high-altitude throwing is greatly affected by wind, resulting in high water and fertilizer drift loss, making it difficult to accurately deliver water and fertilizer to the crop root zone, and the water and fertilizer utilization efficiency is low. Summary of the Invention

[0006] The purpose of this invention is to provide a dual-outlet arc-shaped sprinkler head device for a sprinkler robot, which aims to solve the technical problem that the existing technology uses conventional circular nozzles, resulting in concentrated water flow and limited water curtain diffusion effect.

[0007] This invention employs a lateral polygonal water outlet, which relies on the straight edges of the orifice to cut the water flow, forming a flat, diffused water curtain, thus improving the problem of excessive water volume near the source and insufficient water volume at the far end.

[0008] To achieve the above objectives, the present invention provides the following technical solution.

[0009] According to one embodiment of the present invention, a dual-outlet arc-shaped sprinkler head device for a sprinkler irrigation robot is provided, comprising:

[0010] A dual-outlet arc-shaped sprinkler head device for a sprinkler robot includes:

[0011] The main body of the diversion system is a three-way structure. The inlet end of the three-way structure is connected to the water supply pipeline through a quick-connect plug. The two outlet ends of the three-way structure are connected to two arc-shaped outlet pipes respectively.

[0012] in:

[0013] The arc-shaped water outlet pipe has an outward curved structure and a smooth body. The two arc-shaped water outlet pipes expand outward and downward symmetrically to increase the distance between the water outlets. Each arc-shaped water outlet pipe has at least one water outlet on the lower side wall, and the water outlets are arranged on the side of the two water outlet pipes facing outward.

[0014] The lower end of each arc-shaped water outlet pipe is a closed end face, which is used to support the counterweight.

[0015] Furthermore, the outward bending angle of the arc-shaped water outlet pipe is 30° to 45°.

[0016] Furthermore, the main body of the diversion system is a one-piece molded smooth flow channel structure with no right-angle dead corners inside;

[0017] The inlet end of the three-way structure is a branch main pipe, which can be quickly connected to the water supply pipeline of the sprinkler truss through the quick-connect plug at the inlet end;

[0018] Both outlets of the three-way structure are branch pipes, which are connected to the corresponding arc-shaped outlet pipes via quick-connect plugs at the outlets.

[0019] Furthermore, the main body of the diversion system is a one-piece molded smooth flow channel structure with no right-angle dead corners inside;

[0020] The inlet end of the three-way structure is a branch main pipe, which can be quickly connected to the water supply pipeline of the sprinkler truss through the quick-connect plug at the inlet end;

[0021] Both outlet ends of the three-way structure are branch pipes, and the branch pipes and the corresponding arc-shaped outlet pipes are an integrated pipeline structure.

[0022] Furthermore, the water outlet is a polygonal lateral water outlet;

[0023] The opening shape of the water outlet is one of square, rectangle, rhombus or regular octagon;

[0024] The outlet has a straight, angular opening for cutting the water flow.

[0025] Furthermore, there is a preset distance between the bottom end of the water outlet and the upper surface of the counterweight, the preset distance being the distance between the bottom end of the water outlet and the bottom closed end face of the arc-shaped water outlet pipe.

[0026] Furthermore, the counterweight is a counterweight block, which is integrally molded and set on the closed end face.

[0027] Furthermore, the counterweight is a thickened solid body disposed at the bottom of the arc-shaped water outlet pipe.

[0028] Furthermore, the quick-connect plug at the water inlet end includes:

[0029] The plug body is a through structure along the axial direction. The inner wall along the axial direction is provided with two sealing rings and a limiting inner ring, with the limiting inner ring located between the two sealing rings. The outer rings at both ends along the axial direction are machined with external threads, and the outer rings at both ends along the axial direction are also fixedly welded or integrally formed with limiting outer rings.

[0030] Two locking nuts are provided, which are used to lock the connection to both ends of the plug body along the axial direction. The locking nuts include an inner ring with a locking ring on one side along the axial direction and an inner ring with an internal thread on the other side. The internal thread and the external thread are threaded together to connect the other side of the locking nut to the outer ring of the end of the plug body by means of a threaded connection.

[0031] A compression washer is provided, the outer diameter of which is adapted to the inner diameter of the port of the plug body. The end of the compression washer along the axial direction is integrally formed with a washer ring, the diameter of which is larger than the port diameter of the plug body. When the locking nut is tightened, the locking nut moves along the axial direction of the plug body and squeezes the locking ring. At the same time, the ring seat at the end of the locking ring abuts against the washer ring. The end of the compression washer located inside the plug body squeezes the rubber sealing ring, so that the rubber sealing ring is tightly attached to the outer wall of the pipeline to form a radial seal.

[0032] Furthermore, the locking ring is a ring-shaped structure with a notch, and the inner wall of the ring-shaped structure has annular serrations. When the locking nut is tightened, the locking nut moves axially along the plug body and squeezes the locking ring, causing the locking ring to contract radially, and the annular serrations grip the outer wall of the inserted pipe.

[0033] Compared with the prior art, the beneficial effects of the dual-outlet arc-shaped sprinkler head device for irrigation robots of the present invention are:

[0034] This invention features a symmetrical arc-shaped curved water outlet pipe with an outward tilt angle of 30° to 45°. The arc-shaped smooth flow channel has no dead angles, the water flow turns gently, and the pipeline flow resistance is reduced. At the same time, it avoids the disadvantages of insufficient lateral offset and soil erosion when the angle is too small, and poor stability when the angle is too large. It is suitable for wide-area irrigation operations in large fields, and the smoothness of the flow channel and the adaptability of spraying are improved.

[0035] This invention employs a method of first stabilizing the flow with counterweights and then discharging water laterally. As the water flows downward along the arc-shaped pipe, a portion of the water reaches the lateral outlet while flowing downward along the arc-shaped pipe, and is directly sprayed outward from the lateral outlet, achieving lateral water discharge to the roots, avoiding vertical downward flow and preventing soil erosion. The other portion of the water continues to flow downward along the pipe wall, reaching the inner surface of the bottom counterweight, impacting the end face of the counterweight to form a buffer and dissipate energy, and then turning upward and being discharged from the lateral outlet. Unlike traditional direct water discharge structures, this structure ensures the stability and uniformity of spraying, and the lateral water discharge enables directional irrigation to the roots, preventing soil erosion and siltation. The polygonal outlets on the side wall avoid concentrated water jets eroding the soil, achieving directional irrigation to the roots close to the ground surface and improving water and fertilizer utilization. Attached Figure Description

[0036] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0037] In the attached diagram:

[0038] Figure 1 This is a three-dimensional structural diagram of a dual-outlet arc-shaped sprinkler head device for an irrigation robot according to Embodiment 1 of the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of the diversion body provided in Embodiment 1 of the present invention;

[0040] Figure 3 This is a schematic diagram of the arc-shaped water outlet pipe provided in Embodiment 1 of the present invention;

[0041] Figure 4 This is a cross-sectional view of the nozzle device provided in Embodiment 1 of the present invention;

[0042] Figure 5 This is a three-dimensional structural diagram of a dual-outlet arc-shaped sprinkler head device for an irrigation robot according to Embodiment 2 of the present invention;

[0043] Figure 6 This is a schematic diagram of the quick-connect connector provided in Embodiment 3 of the present invention;

[0044] Figure 7 This is a cross-sectional view of the quick-connect connector provided in Embodiment 3 of the present invention;

[0045] Figure 8 This is a schematic diagram of the compression washer provided in Embodiment 3 of the present invention;

[0046] Figure 9 This is a schematic diagram of the locking nut provided in Embodiment 3 of the present invention.

[0047] The above figures include the following reference numerals:

[0048] 1. Main branch pipe; 11. Main branch pipe; 12. Branch pipe; 2. Inlet quick-connect plug; 21. Locking nut; 211. Internal thread; 22. Locking ring; 221. Ring seat; 222. Notch; 23. Inner limiting ring; 24. Sealing ring; 25. Compression washer; 251. Washer ring; 26. Plug body; 261. Outer limiting ring; 262. External thread;

[0049] 3. Quick-connect plug at the water outlet; 4. Arc-shaped water outlet pipe; 5. Water outlet; 6. Counterweight; 7. Water supply pipeline. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0052] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0053] Example 1

[0054] like Figures 1 to 4 As shown in Embodiment 1, a dual-outlet arc-shaped sprinkler head device for a sprinkler robot is provided. The sprinkler head device includes a diversion body 1, which is a three-way structure, including a main diversion pipe 11 and two branch diversion pipes 12. The diversion body 1 is T-shaped. The main diversion pipe 11 is quickly connected to the sprinkler truss water supply hose through the inlet quick connector 2. The two branch diversion pipes 12 on the left and right sides are respectively connected to the arc-shaped outlet pipes 4 through the outlet quick connectors 3.

[0055] In one implementation, the main body 1 of the diversion is a one-piece molded smooth flow channel structure with no right angle dead corners inside. One main diversion pipe 11 and two branch diversion pipes 12 form a symmetrical diversion structure with top inlet and double outlet.

[0056] All pipe connection points in this application adopt quick-connect plug mating structure.

[0057] The main branch pipe 11 is quickly connected to the external water supply pipe 7 via the quick-connect plug 2 at the inlet end, and the two branch pipes 12 on the left and right sides are directly connected to the upper end of the arc-shaped water outlet pipe 4 via the quick-connect plug 3 at the outlet end.

[0058] Please continue to refer to Figure 1 , Figure 3 and Figure 4 The arc-shaped water outlet pipe 4 has an outward curved structure and a smooth body. The two arc-shaped water outlet pipes 4 expand outward and downward symmetrically to increase the distance between the water outlets. The inner wall of the pipe has a smooth arc transition throughout without right angles, resulting in low flow resistance of the water.

[0059] In one implementation, the outward bending angle of the arc-shaped water outlet pipe 4 is 30° to 45°, and the inside of the pipe is a smooth transition flow channel without any right-angle dead angles. This is because both excessively large and small water outlet angles will cause significant defects: if the bending angle is too small, the pipe body is almost a vertical straight pipe structure, the lateral offset of the water outlet is insufficient, and the water flow remains concentrated in the area directly below the nozzle, failing to achieve lateral water distribution at the roots; if the bending angle is too large, the external expansion of the pipe is too large, the water jet distance is too far, the water volume is dispersed, and the uniformity and stability of irrigation will decrease.

[0060] like Figure 3 and Figure 4 As shown, each arc-shaped water outlet pipe 4 has at least one water outlet 5 on its lower side wall. The water outlet 5 is arranged on the side of the two water outlet pipes 4 facing outward. The water outlet 5 is a polygonal side outlet with an opening shape of one of square, rectangle, rhombus or regular octagon. The orifice has straight edges to cut the water flow.

[0061] The lower end of the outlet pipe 4 is a closed end face, which is used to support the counterweight 6. Water can only be sprayed horizontally outward from the outlet on the side wall of the pipe, realizing directional irrigation of crop roots close to the ground surface. This structure can meet multiple requirements such as directional irrigation of roots, erosion resistance, spraying stability and smooth fluid flow.

[0062] The arc-shaped water outlet pipe 4 and the water outlet 5 on its lower side wall of the present invention provide lateral water discharge for directional root irrigation and prevent soil erosion and siltation. The side wall is provided with polygonal water outlets. This avoids concentrated water jets eroding the soil, achieves directional root irrigation close to the ground surface, and improves water and fertilizer utilization.

[0063] In this invention, water flows through the diversion body into the arc-shaped outlet pipe, first flowing through the pipe section containing the integrated counterweight structure to achieve a stable flow, and then being sprayed outward through the lateral outlet to achieve directional irrigation of crop roots.

[0064] During use, a portion of the water flows downward along the arc-shaped pipe and reaches the side outlet 5, where it is sprayed directly outward, achieving lateral water discharge from the roots and avoiding vertical downward flow to prevent soil erosion. The other portion of the water continues to flow downward along the pipe wall, reaching the inner surface of the bottom counterweight 6, where it impacts the end face of the counterweight 6 to form a buffer and dissipate energy, before turning back upward and being discharged from the side outlet 5.

[0065] In a preferred embodiment, the counterweight can be an independent counterweight block placed on the closed end face, or a thickened solid body can be made at the bottom of the water outlet pipe 4.

[0066] There is a preset distance between the bottom of the outlet 5 and the upper surface of the counterweight or the upper surface of the solid body. The purpose is to allow part of the water flow to reach this surface and form a buffer before flowing out of the outlet 5. The rest of the water flow will still flow out when it reaches the outlet 5, but with this buffer section, the flow stabilization effect can be better achieved.

[0067] In this embodiment, the counterweight and the lower end of the arc-shaped water outlet pipe are integrally injection molded, eliminating the need for subsequent gluing or welding, and removing any secondary assembly gaps. This eliminates the risk of counterweight detachment, loosening, or failure. The weight of the counterweight effectively lowers the center of gravity of the sprinkler head, thereby increasing the sway damping of the hose under suspension. This suppresses the left-right swaying and drifting of the sprinkler head caused by windy conditions, ensuring accurate positioning of the nozzle in complex environments. The preset distance or buffer section is the distance from the bottom of the water outlet 5 to the upper surface of the counterweight. This embodiment employs a side-discharge, bottom-closed structure, avoiding the problem of concentrated water flow impacting the ground surface in traditional sprinkler head systems. It disperses the scouring load on the soil, preventing soil erosion directly below the sprinkler head, thus avoiding pits and localized water accumulation. This effectively protects the surface soil and is suitable for long-term continuous irrigation in large fields. It should be noted that the integral design is a preferred embodiment. The integrated structure of the counterweight and the arc-shaped water outlet pipe eliminates the risk of the counterweight loosening or falling off. Placed at the lower end of the pipeline, it effectively lowers the center of gravity of the sprinkler head suspension, ensuring accurate positioning and stable spray uniformity.

[0068] In other embodiments, the counterweight 6 can also be a counterweight structure that is detachably or separably connected to the end of the water outlet pipe 4, such as a counterweight block, which can be placed directly inside the water outlet pipe 4 or installed outside the water outlet pipe 4. When it is installed outside the water outlet pipe 4, the preset distance is the distance from the bottom of the water outlet 5 to the bottom closed end face of the water outlet pipe 4.

[0069] In use, irrigation water is supplied via a hose from the sprinkler truss and quickly connected to the main body 1 of the distribution unit through the quick-connect plug 2 at the top inlet. The water flows smoothly and bidirectionally within a smooth transition channel, then is smoothly guided into two symmetrically arranged arc-shaped outlet pipes via quick-connect plugs 3 on both sides. The water flows downwards and outwards along the smooth arc-shaped pipe walls. Some water flows out through the outlets, while some flows through the integrated counterweight structure 6 at the lower end of the arc-shaped outlet pipes. The water flow is further stabilized by the counterweight surface, and finally, it is sprayed outwards through the outlet 5 on the upper side of the pipe wall, precisely targeting the crop root zone for precise, erosion-resistant root irrigation. In case of failure, the entire unit can be quickly and easily replaced, offering convenient maintenance, high reliability, and a long service life. The entire sprinkler system is driven solely by external water pressure and does not include a motor or control components; the overall number of parts is small, and the assembly process is simple.

[0070] Example 2

[0071] like Figure 5 As shown, unlike Embodiment 1, in the dual-outlet arc-shaped sprinkler head device for irrigation robots provided in Embodiment 2, the two branch pipes 12 on the left and right sides and the corresponding arc-shaped water outlet pipes 4 are integrally formed, eliminating the need for the quick-connect plug 3 at the water outlet end. This means that the sprinkler head device provided in Embodiment 2 only uses one quick-connect plug 2 at the water inlet end. The dual-outlet arc-shaped sprinkler head device provided by this structure only requires the water inlet end of the branch body 1 to be directly connected to the water supply pipe 7 through the quick-connect plug 2 at the water inlet end. The branch body 1 itself does not need to be assembled, which improves the efficiency of use.

[0072] Example 3

[0073] Unlike Embodiment 2, the structure of the quick-connect plug 2 at the water inlet end has been improved in the dual-outlet arc-shaped water spray nozzle device provided in Embodiment 3.

[0074] As a preferred embodiment of the quick-connect plug 2 at the water inlet end in this example, Figures 5 to 9 As shown, the quick-connect plug 2 at the water inlet end includes a plug body 26 and a locking nut 21. The plug body 26 is a through structure along the axial direction. Two sealing rings 24 and a limiting inner ring 23 are provided on the inner wall along the axial direction. The limiting inner ring 23 is located between the two sealing rings 24.

[0075] When the pipe is inserted into the plug body 26, the inner limiting ring 23 is used to limit the depth of pipe insertion.

[0076] The sealing ring 24 is used for sealing between the outer wall of the pipe and the inner wall of the plug body 26;

[0077] Both ends of the outer ring along the axial direction are machined with external threads 262, and the outer rings at both ends along the axial direction are also fixedly welded or integrally formed with a limiting outer ring 261, which is used to limit the locking movement stroke endpoint of the locking nut 21.

[0078] The locking nuts 21 are of two types, which are used to lock the connection to both ends of the plug body 26 along the axial direction. The locking nuts 21 include an inner ring with a locking ring 22 on one side along the axial direction and an inner ring with an internal thread 211 on the other side. The internal thread 211 is threadedly engaged with the external thread 262, which is used to connect the other side of the locking nuts 21 to the outer ring of the end of the plug body 26 by means of threaded connection.

[0079] Preferably, such as Figure 7 and Figure 9 As shown, the locking ring 22 is a ring-shaped structure with a notch 222. The inner wall of the ring-shaped structure has annular serrations. When the locking nut 21 is tightened, the locking nut 21 moves axially along the plug body 26 and squeezes the locking ring 22, causing the locking ring 22 to contract radially. Its inner wall serrations grip the outer wall of the inserted pipe, thereby achieving axial positioning and preventing the pipe from coming off.

[0080] Please continue to refer to Figures 7 to 9 In this embodiment, the quick-connect plug 2 at the water inlet also includes a compression washer 25. The outer diameter of the compression washer 25 is adapted to the inner diameter of the port of the plug body 26, so that the compression washer 25 can be inserted into the inner cavity of the port of the plug body 26. The end of the compression washer 25 along the axial direction is integrally formed with a washer ring 251. The diameter of the washer ring 251 is larger than the diameter of the port of the plug body 26. When the locking nut 21 is tightened, the locking nut 21 moves along the axial direction of the plug body 26 and squeezes the locking ring 22. At the same time, the ring seat 221 at the end of the locking ring 22 abuts against the washer ring 251, so that the compression washer 25 moves. The end of the compression washer 25 located inside the plug body 26 squeezes the rubber sealing ring 24, so that the rubber sealing ring 24 is tightly attached to the outer wall of the pipeline to form a radial seal and prevent the medium inside the pipeline from leaking.

[0081] By unscrewing the locking nut 21 in the reverse direction, the axial compressive force is released, and the locking ring 22 springs open, allowing the pipe to be pulled out directly; thus enabling the quick-connect plug 2 at the water inlet to be quickly inserted and removed from the pipe.

[0082] In this embodiment of the invention, the water inlet end of the diversion body 1 and the water supply pipeline 7 are connected by a quick-connect plug 2 at the water inlet end, which enables quick connection, automatic sealing, and non-destructive disassembly and assembly. The assembly is simple, with fewer assembly steps, effectively reducing manufacturing costs.

[0083] The quick-connect plug 2 at the water inlet end has integrated positioning, locking, and sealing functions. After plugging in, the pipeline connection and end face sealing can be completed. The entire nozzle can be quickly plugged in and replaced. When the nozzle is blocked, worn, aged, or damaged, the old nozzle can be directly unplugged and the new nozzle can be installed, which greatly simplifies the field maintenance and equipment replacement process and reduces operation and maintenance costs.

[0084] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A dual-outlet arc-shaped sprinkler head device for a sprinkler irrigation robot, characterized in that, include: The main body of the diversion (1) is a three-way structure. The inlet end of the three-way structure is connected to the water supply pipeline (7) through the quick-connect plug (3). The two outlet ends of the three-way structure are respectively connected to two arc-shaped outlet pipes (4). in: The arc-shaped water outlet pipe (4) has an arc-shaped outward bending structure and a smooth pipe body. The two arc-shaped water outlet pipes (4) expand outward and downward symmetrically to widen the water outlet spacing. Each arc-shaped water outlet pipe (4) has at least one water outlet (5) on the lower side wall. The water outlet (5) is arranged on the side of the two water outlet pipes (4) facing outward. The lower end of each arc-shaped water outlet pipe (4) is a closed end face, which is used to support the counterweight (6).

2. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 1, characterized in that, The outward bending angle of the arc-shaped water outlet pipe (4) is 30° to 45°.

3. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 2, characterized in that, The main body of the diversion (1) is a one-piece molded smooth flow channel structure with no right-angle dead corners inside; The inlet end of the three-way structure is the main branch pipe (11), and the main branch pipe (11) is quickly connected to the water supply pipe (7) of the sprinkler truss through the quick connector (2) at the inlet end. Both outlets of the three-way structure are branch pipes (12), and the branch pipes (12) are connected to the corresponding arc-shaped outlet pipes (4) through the quick-connect plugs (3) at the outlets.

4. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 2, characterized in that, The main body of the diversion (1) is a one-piece molded smooth flow channel structure with no right-angle dead corners inside; The inlet end of the three-way structure is the main branch pipe (11), and the main branch pipe (11) is quickly connected to the water supply pipe (7) of the sprinkler truss through the quick connector (2) at the inlet end. Both outlet ends of the three-way structure are branch pipes (12), and the branch pipes (12) and the corresponding arc-shaped outlet pipes (4) are an integrated pipeline structure.

5. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 3 or 4, characterized in that, The outlet (5) is a polygonal lateral outlet; The opening shape of the outlet (5) is one of square, rectangle, rhombus or regular octagon; The outlet (5) has a straight edge for cutting the water flow.

6. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 5, characterized in that, The bottom of the water outlet (5) is at a preset distance from the upper surface of the counterweight (6), and the preset distance is the distance from the bottom of the water outlet (5) to the bottom closed end face of the arc-shaped water outlet pipe (4).

7. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 6, characterized in that, The counterweight (6) is a counterweight block, which is integrally formed and set on the closed end face.

8. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 6, characterized in that, The counterweight (6) is a thickened solid body at the bottom of the arc-shaped water outlet pipe (4).

9. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 6, characterized in that, The quick-connect plug (2) at the water inlet end includes: The plug body (26) is a through structure along the axial direction. Two sealing rings (24) and a limiting inner ring (23) are provided on the inner wall along the axial direction. The limiting inner ring (23) is located between the two sealing rings (24). The outer rings at both ends along the axial direction are machined with external threads (262), and the outer rings at both ends along the axial direction are also fixedly welded or integrally formed with limiting outer rings (261). Two locking nuts (21) are provided, which are used to lock the connection between the plug body (26) at both ends along the axial direction. The locking nut (21) includes an inner ring with a locking ring (22) on one side along the axial direction and an inner ring with an internal thread (211) on the other side. The internal thread (211) is threadedly engaged with the external thread (262) to connect the other side of the locking nut (21) to the outer ring of the end of the plug body (26) by means of a threaded connection. A compression washer (25) is formed with an outer diameter that matches the inner diameter of the port of the plug body (26). The end of the compression washer (25) along the axial direction is integrally formed with a washer ring (251). The diameter of the washer ring (251) is larger than the port diameter of the plug body (26). When the locking nut (21) is tightened, the locking nut (21) moves along the axial direction of the plug body (26) and squeezes the locking ring (22). At the same time, the ring seat (221) at the end of the locking ring (22) abuts against the washer ring (251). The end of the compression washer (25) located inside the plug body (26) squeezes the rubber sealing ring (24), so that the rubber sealing ring (24) is tightly attached to the outer wall of the pipeline to form a radial seal.

10. The dual-outlet arc-shaped sprinkler head device for irrigation robots according to claim 9, characterized in that, The locking ring (22) is a ring structure with a notch (222). The inner wall of the ring structure has annular serrations. When the locking nut (21) is tightened, the locking nut (21) moves axially along the plug body (26) and squeezes the locking ring (22), causing the locking ring (22) to contract radially and the annular serrations to grip the outer wall of the inserted pipe.

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