Water-saving type spraying equipment for surface irrigation

Abstract

The invention relates to the technical field of agricultural sprinkling irrigation, in particular to water-saving type spraying equipment for ground irrigation, which comprises a support frame and a main pipeline, the main pipeline is fixedly mounted above the support frame, the bottom of the main pipeline is fixedly connected with a water inlet pipe, a plurality of uniformly arranged branch pipes are fixedly mounted on the side wall of the main pipeline, and the branch pipes are fixedly connected with the water inlet pipe. And a spray pipe is fixedly mounted at the tail end of the branch pipe. Through up-down movement of the rotating rod, self-adaptive adjustment of the spray irrigation atomization degree along with wind power is achieved, the problem that water mist is excessively diffused under the strong wind condition or irrigation is uneven under the weak wind condition is solved, it is ensured that the stable spray irrigation range and the uniformity of atomized water drops can be maintained under different wind conditions, meanwhile, water resource waste and drifting loss are reduced, and the energy-saving and environment-friendly effects are achieved. Water source bubbles are filtered through the hydrophobic membrane, so that air carried in a water source can be effectively removed in the sprinkling irrigation process, the phenomenon of uneven atomization caused by bubble breakage in the sprinkling irrigation process is avoided, and the sprinkling irrigation uniformity is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural sprinkler irrigation technology, and in particular to a water-saving spray device for surface irrigation. Background Technology

[0002] In farmland cultivation, sprinkler irrigation systems are commonly used to water fields. Sprayers are key equipment for water-saving irrigation in agriculture. Traditional systems often use fixed pressure for spraying, making it impossible to adjust the atomization fineness according to environmental changes. When wind speed increases, fine droplets are easily dispersed and drift, resulting in insufficient irrigation in the target area. Conversely, in calmer conditions, coarse droplets struggle to evenly cover the crop canopy, affecting absorption efficiency. This means existing equipment cannot automatically adjust the water mist fineness based on wind speed changes; for example, it needs to increase the fineness to resist drift in strong winds and decrease it to improve coverage in light winds. Therefore, during sprinkler irrigation, water... Fog is easily affected by wind, causing significant trajectory deviation and uneven droplet distribution, reducing irrigation uniformity. In addition, the sprinklers use recycled water (such as rainwater) and river water, and impurities in the water can easily clog the nozzles, affecting atomization and making automatic cleaning difficult. This makes the sprinklers highly demanding on the water source, making it impossible to use recycled water or river water. Furthermore, during the spraying process, when water containing air bubbles is sprayed through the nozzle, the bubbles burst under high pressure, causing instability in the atomization process and further exacerbating the uneven spraying. At the same time, the bursting of air bubbles can interfere with the continuity and uniformity of water flow, leading to reduced irrigation efficiency and problems such as localized over-wetting or drought. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the background art by providing a water-saving spray device for ground irrigation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A water-saving spraying device for ground irrigation includes a support frame and a main pipe. The main pipe is fixedly installed above the support frame, and a water inlet pipe is fixedly connected to the bottom of the main pipe. Several evenly arranged branch pipes are fixedly installed on the side wall of the main pipe, and spray pipes are fixedly installed at the ends of the branch pipes. A mist adjusting component is movably installed inside the spray pipe. The mist adjusting component includes a rotating frame and a rotating rod. The rotating rod is rotatably installed inside the spray pipe, and an impeller is integrally formed on the outer peripheral wall of the rotating rod. The rotating frame is rotatably installed on the top of the spray pipe. The nozzle has an internal cavity, and an exhaust assembly is movably installed below the cavity. The exhaust assembly includes a rotating disk and a rotating ring. The rotating disk is movably installed inside the cavity and is fixedly fitted onto the outside of the rotating rod. The bottom of the rotating disk has several evenly distributed spiral shells integrally formed. A hydrophobic film is fixedly installed on the sidewall of the spiral shell. The rotating ring is movably installed inside the nozzle and is located below the spiral shell.

[0005] Preferably, the impeller is located below the rotating ring, the helical direction of the impeller blades is the same as the helical direction of the helical shell, an outer ratchet is fixedly installed at the bottom of the rotating frame, an inner ratchet is slidably installed at the top of the rotating rod, and the inner ratchet is rotatably installed inside the outer ratchet.

[0006] Preferably, a nozzle is rotatably mounted on the bottom of the nozzle, a support ring is welded to the bottom of the rotating rod, the support ring is slidably mounted on the inner side of the nozzle, a number of evenly distributed grooves are opened on the bottom of the support ring, and a number of evenly distributed air cups are integrally formed on the outer peripheral wall of the rotating frame.

[0007] Preferably, the side wall of the rotating disk is provided with an air groove, the two ends of the air groove are respectively connected to the interior of the spiral shell and the cavity, and the side wall of the cavity is provided with a number of evenly distributed exhaust holes.

[0008] Preferably, the bottom of the rotating disk is integrally formed with a plurality of evenly distributed convex teeth, the side wall of the rotating ring is integrally formed with a rotating cylinder, the convex teeth are located on the inner side of the rotating cylinder, and the inner wall of the rotating cylinder is provided with a plurality of evenly distributed concave teeth, the concave teeth and the convex teeth abut against each other.

[0009] Preferably, a fixed cylinder is slidably installed inside the nozzle, the rotating ring is movably installed inside the fixed cylinder, and a bracket is integrally formed inside the nozzle, the bracket being located between the fixed cylinder and the impeller.

[0010] Preferably, the support rod inside the fixed cylinder is located below the rotating ring, and the support rod inside the fixed cylinder and the support rod inside the rotating ring abut against each other. The top of the bracket is integrally formed with a limiting rod, which passes through the fixed cylinder and abuts against the support rod inside the rotating ring.

[0011] Preferably, a spring is provided between the top of the fixed cylinder and the inner wall of the nozzle, and a top ring is integrally formed on the side wall of the rotating rod, the top ring being located between the fixed cylinder and the bracket.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: 1. By rotating the lever up and down, the water mist sprayed from the nozzle is finer when the wind is weak and finer when the wind is strong. This allows the atomization degree of the sprinkler to be adaptively adjusted according to the wind force, avoiding excessive diffusion of water mist under strong wind conditions or uneven irrigation under weak wind conditions. It ensures that a stable sprinkler range and uniformity of atomized water droplets can be maintained under different wind conditions, while reducing water waste and drift loss, and further improving water-saving efficiency.

[0013] 2. During the process of water impacting the hydrophobic membrane, larger air bubbles in the water source pass through the hydrophobic membrane and enter the interior of the spiral shell. The hydrophobic membrane filters the air bubbles in the water source, which can effectively remove the air entrained in the water source during the sprinkler irrigation process, avoid uneven atomization caused by the bursting of air bubbles during the sprinkler irrigation process, and improve the uniformity of sprinkler irrigation.

[0014] 3. During the process of the rotating disc driving the convex and concave teeth to mesh, the rotating cylinder drives the rotating ring and the fixed cylinder to vibrate at high frequency through the concave teeth and the spring. This causes smaller air bubbles in the water source to gather at the position of the rotating ring. Through the vibration of the rotating ring and the wake of the spiral shell, the air bubbles can more easily detach from the water source and pass through the hydrophobic membrane, improving the gas-liquid separation efficiency. At the same time, it avoids the long-term retention of air bubbles in the water, which affects the spraying effect, effectively improves the stability of the water flow in the nozzle, and ensures uniform and continuous spraying.

[0015] 4. After the rotating rod moves upward, the nozzle of the spray head increases in size. At this time, the rotating ring rotates at high speed, which enables the rotating ring to self-clean the dirt inside the spray pipe. This effectively prevents impurities from clogging the nozzle of the spray head and causing water flow turbulence, thus improving the spray head's applicability to water sources, its anti-clogging performance, and its long-term operational stability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the nozzle and rotating frame in this invention; Figure 3 This is a cross-sectional view of the nozzle and rotating frame in this invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a cross-sectional view of the nozzle structure in this invention; Figure 6 This is a schematic diagram of the structure of the fog control assembly and the exhaust assembly in this invention; Figure 7 This is a schematic diagram of the rotating disk in this invention; Figure 8 This is a disassembly diagram of the rotating ring and the fixed cylinder in this invention; Figure 9This is a disassembly diagram of the rotating rod and the inner ratchet in this invention.

[0017] In the diagram: 1. Support frame; 11. Main pipe; 12. Inlet pipe; 13. Branch pipe; 14. Spray pipe; 141. Nozzle; 142. Rotating frame; 143. Air cup; 144. Exhaust port; 145. Cavity; 146. Limiting rod; 147. Bracket; 21. Rotating rod; 211. Impeller; 212. Support ring; 213. Inner ratchet; 214. Outer ratchet; 215. Top ring; 216. Groove; 22. Rotating disk; 221. Spiral shell; 222. Hydrophobic membrane; 223. Air groove; 224. Convex tooth; 231. Rotating ring; 232. Fixed cylinder; 233. Spring 1; 234. Rotating cylinder; 235. Concave tooth. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Reference Figure 1 - Figure 9 As shown, a water-saving spray device for ground irrigation includes a support frame 1 and a main pipe 11. The main pipe 11 is fixedly installed above the support frame 1. A water inlet pipe 12 is fixedly connected to the bottom of the main pipe 11. Several evenly arranged branch pipes 13 are fixedly installed on the side wall of the main pipe 11. A spray pipe 14 is fixedly installed at the end of the branch pipe 13. A nozzle 141 is rotatably installed at the bottom of the spray pipe 14. A mist adjustment component is movably installed inside the spray pipe 14. The mist adjustment component includes a rotating frame 142 and a rotating rod 21. The rotating rod 21 is rotatably installed inside the spray pipe 14. An impeller 211 is integrally formed on the outer peripheral wall of the rotating rod 21. The rotating frame 142 is rotatably installed on the top of the spray pipe 14. The nozzle 14 has a cavity 145 inside, and an exhaust assembly is movably installed below the cavity 145. The exhaust assembly includes a rotating disk 22 and a rotating ring 231. The rotating disk 22 is movably installed inside the cavity 145 and is fixedly fitted onto the outside of the rotating rod 21. The bottom of the rotating disk 22 has several evenly distributed spiral shells 221 integrally formed. A hydrophobic film 222 is fixedly installed on the side wall of the spiral shell 221. The rotating ring 231 is movably installed inside the nozzle 14 and is located below the spiral shell 221.

[0021] The inlet pipe 12 is connected to the water pump inside the external water source, so that when the farmland is being irrigated, the water pump inside the external water source is activated and the water source is discharged through the inlet pipe 12 into the inside of the main pipe 11. The main pipe 11 discharges the water source to the inside of the nozzle 141 through the branch pipe 13 and the spray pipe 14. The nozzle of the nozzle 141 is tangent to the nozzle 141, so that the nozzle 141 rotates to irrigate the farmland. The hydrophobic membrane 222 is a microporous membrane made of expanded polytetrafluoroethylene, which has a three-dimensional microporous network evenly distributed inside, allowing gas to permeate freely while blocking liquid.

[0022] like Figure 3 , Figure 6 and Figure 9 As shown, the impeller 211 is located below the rotating ring 231. The helical direction of the impeller 211 blades is the same as that of the helical shell 221. An outer ratchet 214 is fixedly installed at the bottom of the rotating frame 142. An inner ratchet 213 is slidably installed at the top of the rotating rod 21. The inner ratchet 213 is rotatably installed inside the outer ratchet 214. A support ring 212 is welded to the bottom of the rotating rod 21. The support ring 212 is slidably installed inside the nozzle 14. Several evenly distributed grooves 216 are opened at the bottom of the support ring 212. Several evenly distributed wind cups 143 are integrally formed on the outer peripheral wall of the rotating frame 142.

[0023] During sprinkler irrigation of farmland, when the external wind force is low, the rotating frame 142 rotates slowly. When the water source from the branch pipe 13 enters the interior of the nozzle 14, it impacts the hydrophobic membrane 222, causing the hydrophobic membrane 222 and the spiral shell 221 to drive the rotating rod 21 to rotate. The impeller 211 follows the rotating rod 21 to rotate. At this time, the rotational speed of the rotating rod 21 is greater than the rotational speed of the rotating frame 142, and the rotational speed of the inner ratchet 213 is greater than the rotational speed of the outer ratchet 214, so that the rotation of the rotating frame 142 and the rotating rod 21 do not interfere with each other. Interference occurs when the support ring 212 intercepts the nozzle of the nozzle 141, allowing water from the inside of the nozzle 141 to enter the nozzle through the groove 216 for irrigation. During the process of water impacting the hydrophobic membrane 222, larger air bubbles in the water pass through the hydrophobic membrane 222 and enter the interior of the spiral shell 221. The hydrophobic membrane 222 filters the air bubbles in the water, effectively removing air entrained in the water during irrigation and preventing uneven atomization caused by air bubble rupture, thus improving irrigation uniformity. When the outside wind is strong, the rotating frame 142 rotates rapidly. At this time, the rotational speed of the rotating rod 21 is less than that of the rotating frame 142, and the rotational speed of the inner ratchet 213 is less than that of the outer ratchet 214. This causes the rotating frame 142 to drive the rotating rod 21 to rotate rapidly, and the impeller 211 follows the rotating rod 21 to rotate rapidly. This causes the impeller 211 to drive the rotating rod 21 to move upward, and the support ring 212 to move upward and remove its obstruction at the nozzle of the nozzle 141, allowing the water source to pass directly through the nozzle 141. The water is discharged from the nozzle for irrigation. By moving the rotating rod 21 up and down, the water mist sprayed by the nozzle 141 is finer when the wind is weak and finer when the wind is strong. This allows the degree of atomization to be adaptively adjusted according to the wind force, avoiding excessive diffusion of water mist under strong wind conditions or uneven irrigation under weak wind conditions. It ensures that a stable irrigation range and uniformity of atomized water droplets can be maintained under different wind conditions, while reducing water waste and drift loss, and further improving water-saving efficiency.

[0024] like Figure 3 , Figure 6 and Figure 7 As shown, the side wall of the rotating disk 22 is provided with an air groove 223. The two ends of the air groove 223 are connected to the interior of the spiral shell 221 and the cavity 145, respectively. The side wall of the cavity 145 is provided with a number of evenly distributed exhaust holes 144.

[0025] The nozzle 14 is under high pressure, while the cavity 145, which is connected to the outside through the exhaust port 144, is under normal pressure. This allows the bubbles to pass through the hydrophobic membrane 222 and enter the interior of the spiral shell 221, then enter the interior of the cavity 145, and finally be discharged to the outside through the exhaust port 144.

[0026] like Figure 4 , Figure 7 and Figure 8 As shown, the bottom of the rotating disk 22 is integrally formed with several evenly distributed protruding teeth 224, and the side wall of the rotating ring 231 is integrally formed with a rotating cylinder 234. The protruding teeth 224 are located inside the rotating cylinder 234, and the inner wall of the rotating cylinder 234 is provided with several evenly distributed concave teeth 235, which abut against the protruding teeth 224.

[0027] like Figures 3-6 and Figure 8 As shown, a fixed cylinder 232 is slidably installed inside the nozzle 14, and a rotating ring 231 is movably installed inside the fixed cylinder 232. A bracket 147 is integrally formed inside the nozzle 14, and the bracket 147 is located between the fixed cylinder 232 and the impeller 211.

[0028] like Figure 4 and Figure 8 As shown, the support rod inside the fixed cylinder 232 is located below the rotating ring 231. The support rod inside the fixed cylinder 232 and the support rod inside the rotating ring 231 abut against each other. The top of the bracket 147 is integrally formed with a limiting rod 146, which passes through the fixed cylinder 232 and abuts against the support rod inside the rotating ring 231. A spring 233 is provided between the top of the fixed cylinder 232 and the inner wall of the nozzle 14. The side wall of the rotating rod 21 is integrally formed with a top ring 215, which is located between the fixed cylinder 232 and the bracket 147.

[0029] When the rotational speed of the rotating rod 21 is greater than that of the rotating frame 142, the limiting rod 146 and the support rod inside the rotating ring 231 abut against each other. At this time, during the process of the rotating disk 22 driving the convex tooth 224 and concave tooth 235 to mesh, the rotating cylinder 234 drives the rotating ring 231 and the fixed cylinder 232 to vibrate at high frequency through the concave tooth 235 and the spring 233. This causes smaller bubbles in the water source to gather at the position of the rotating ring 231. During the rotation of the spiral shell 221, the spiral shell 221 uses the wake generated by the rotation to roll the gathered bubbles toward the direction of the hydrophobic membrane 222, so that the bubbles collide with the hydrophobic membrane 222 and enter the cavity 145. Through the vibration of the rotating ring 231 and the wake of the spiral shell 221, the bubbles are more likely to detach from the water source and pass through the hydrophobic membrane 222, improving the gas-liquid separation efficiency. At the same time, it avoids the bubbles from staying in the water for a long time and affecting the spraying effect, effectively improving the stability of the water flow in the nozzle 14 and ensuring uniform and continuous spraying.

[0030] Further reference Figure 2 and Figures 4-7To explain, the diameter of the exhaust port 144 is much smaller than the size of the air groove 223. When the rotational speed of the rotating rod 21 is less than the rotational speed of the rotating frame 142, the impeller 211 drives the rotating rod 21 to move upward. The rotating rod 21 drives the rotating disk 22 to compress the cavity 145, causing the air inside the cavity 145 to be compressed and move towards the exhaust port 144 and the hydrophobic film 222. This causes the dirt on the surface of the hydrophobic film 222 to detach and fall above the rotating ring 231. When the rotating rod 21 moves upward, it abuts against and drives the fixed cylinder 232 and the rotating ring 231 to move upward through the top ring 215, thus limiting... The support rod on the inner side of the positioning rod 146 and the rotating ring 231 separates. At this time, the high-speed rotating disk 22 drives the rotating ring 231 to rotate at high speed through the convex teeth 224 and concave teeth 235. This causes the rotating ring 231 to break up the accumulated and residual dirt on the top and discharge it to the outside through the enlarged nozzle of the nozzle 141. The upward movement of the rotating rod 21 enables the rotating ring 231 to perform self-cleaning treatment on the dirt inside the nozzle 14, effectively preventing impurities from clogging the nozzle of the nozzle 141 and causing water flow turbulence. This improves the applicability of the nozzle 141 to water sources, its anti-clogging performance, and its long-term operational stability.

[0031] The working principle and usage of this invention are explained in detail below: When irrigating farmland, the water pump inside the external water source is activated, and water is discharged into the main pipe 11 through the inlet pipe 12. The main pipe 11 discharges water to the inside of the nozzle 141 through the branch pipe 13 and the spray pipe 14, causing the nozzle 141 to rotate and irrigate the farmland. When the water from the branch pipe 13 enters the inside of the spray pipe 14, it impacts the hydrophobic membrane 222, causing the hydrophobic membrane 222 and the spiral shell 221 to drive the rotating rod 21 to rotate. When the external wind force is small, the rotation speed of the rotating rod 21 is greater than the rotation speed of the rotating frame 142. The support ring 212 intercepts the nozzle of the nozzle 141, and the limiting rod 146 abuts against the support rod inside the rotating ring 231, causing the spray... Water from the inner side of the head 141 enters the nozzle of the nozzle 141 through the groove 216 for irrigation. During the process of water impacting the hydrophobic membrane 222, larger air bubbles in the water pass through the hydrophobic membrane 222 and enter the interior of the spiral shell 221, and are discharged to the outside through the vent 144. The hydrophobic membrane 222 filters the air bubbles in the water, effectively removing air entrained in the water during irrigation, preventing uneven atomization caused by bubble bursts, and improving irrigation uniformity. Meanwhile, as the rotating disk 22 rotates, the rotating cylinder 234, through the convex teeth 224, concave teeth 235, and spring 233, drives the rotating ring 231 and the fixed cylinder 232 to vibrate at high frequency, causing smaller air bubbles in the water to accumulate at the position of the rotating ring 231. The wake generated by the rotation of the spiral shell 221 draws the gathered bubbles toward the hydrophobic membrane 222, causing the bubbles to collide with the membrane and enter the cavity 145. The vibration of the rotating ring 231 and the wake of the spiral shell 221 facilitate the detachment of bubbles from the water source and their passage through the hydrophobic membrane 222, improving gas-liquid separation efficiency. This also prevents bubbles from remaining in the water for extended periods, thus avoiding interference with the spraying effect and effectively improving the stability of the water flow within the nozzle 14, ensuring uniform and continuous spraying. When the external wind is strong, the rotating frame 142 drives the rotating rod 21 to rotate rapidly, and the impeller 211 follows suit, causing the rod to move upwards. This causes the support ring 212 to move upwards and remove its obstruction at the nozzle 141, allowing the water to flow more evenly. The water source is directly discharged through the nozzle of the sprinkler head 141 for irrigation. The up-and-down movement of the rotating rod 21 allows the water mist sprayed from the sprinkler head 141 to be finer when the wind is weak and finer when the wind is strong. This achieves adaptive adjustment of the atomization degree according to the wind force, avoiding excessive water mist diffusion in strong winds or uneven irrigation in weak winds. It ensures a stable irrigation range and uniformity of atomized water droplets under different wind conditions, while reducing water waste and drift loss, further improving water-saving efficiency. When the rotating rod 21 moves upward, it drives the rotating disk 22, fixed cylinder 232, and rotating ring 231 to move upward. The rotating disk 22 compresses the air inside the cavity 145.The rotating ring 231 moves towards the vent 144 and the hydrophobic film 222, causing dirt on the surface of the hydrophobic film 222 to detach and fall onto the rotating ring 231. After the fixed cylinder 232 and the rotating ring 231 move upward and separate from the limiting rod 146, the high-speed rotating disk 22 drives the rotating ring 231 to rotate at high speed through the convex teeth 224 and concave teeth 235. This causes the rotating ring 231 to break up the accumulated and residual dirt on top and discharge it to the outside through the enlarged nozzle of the nozzle 141. The upward movement of the rotating rod 21 causes the rotating ring 231 to self-clean the dirt inside the nozzle 14, effectively preventing impurities from clogging the nozzle of the nozzle 141 and causing water flow turbulence. This improves the applicability of the nozzle 141 to water sources, its anti-clogging performance, and its long-term operational stability.

[0032] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water-saving spray device for surface irrigation, comprising a support frame (1) and a main pipe (11), characterized in that: The main pipe (11) is fixedly installed above the support frame (1). The bottom of the main pipe (11) is fixedly connected to the water inlet pipe (12). Several evenly arranged branch pipes (13) are fixedly installed on the side wall of the main pipe (11). The end of the branch pipe (13) is fixedly installed with a spray pipe (14). The spray pipe (14) is movably installed with a mist adjustment component. The mist adjustment component includes a rotating frame (142) and a rotating rod (21). The rotating rod (21) is rotatably installed inside the spray pipe (14). The outer peripheral wall of the rotating rod (21) is integrally formed with an impeller (211). The rotating frame (142) is rotatably installed on the top of the spray pipe (14). The nozzle (14) has a cavity (145) inside. An exhaust assembly is movably installed below the cavity (145). The exhaust assembly includes a rotating disk (22) and a rotating ring (231). The rotating disk (22) is movably installed inside the cavity (145). The rotating disk (22) is fixedly fitted on the outside of the rotating rod (21). The bottom of the rotating disk (22) is integrally formed with several evenly distributed spiral shells (221). A hydrophobic film (222) is fixedly installed on the side wall of the spiral shell (221). The rotating ring (231) is movably installed inside the nozzle (14) and is located below the spiral shell (221).

2. The water-saving spray device for surface irrigation according to claim 1, characterized in that: The impeller (211) is located below the rotating ring (231). The helical direction of the impeller (211) blades is the same as the helical direction of the spiral shell (221). An outer ratchet (214) is fixedly installed at the bottom of the rotating frame (142). An inner ratchet (213) is slidably installed at the top of the rotating rod (21). The inner ratchet (213) is rotatably installed inside the outer ratchet (214).

3. The water-saving spray device for surface irrigation according to claim 1, characterized in that: The nozzle (141) is rotatably mounted on the bottom of the nozzle (14), and a support ring (212) is welded to the bottom of the rotating rod (21). The support ring (212) is slidably mounted on the inner side of the nozzle (14). Several evenly distributed grooves (216) are opened at the bottom of the support ring (212). Several evenly distributed wind cups (143) are integrally formed on the outer peripheral wall of the rotating frame (142).

4. The water-saving spray device for surface irrigation according to claim 1, characterized in that: The rotating disk (22) has an air groove (223) on its side wall. The two ends of the air groove (223) are connected to the interior of the spiral shell (221) and the cavity (145) respectively. The cavity (145) has a number of evenly distributed exhaust holes (144) on its side wall.

5. The water-saving spray device for surface irrigation according to claim 1, characterized in that: The bottom of the rotating disk (22) is integrally formed with several evenly distributed convex teeth (224), and the side wall of the rotating ring (231) is integrally formed with a rotating cylinder (234). The convex teeth (224) are located inside the rotating cylinder (234), and the inner wall of the rotating cylinder (234) is provided with several evenly distributed concave teeth (235). The concave teeth (235) and the convex teeth (224) abut against each other.

6. The water-saving spray device for surface irrigation according to claim 1, characterized in that: The nozzle (14) has a fixed cylinder (232) slidably installed inside, and the rotating ring (231) is movably installed inside the fixed cylinder (232). The nozzle (14) has a bracket (147) integrally formed inside, and the bracket (147) is located between the fixed cylinder (232) and the impeller (211).

7. A water-saving spray device for surface irrigation according to claim 6, characterized in that: The support rod inside the fixed cylinder (232) is located below the rotating ring (231). The support rod inside the fixed cylinder (232) and the support rod inside the rotating ring (231) abut against each other. The top of the bracket (147) is integrally formed with a limiting rod (146). The limiting rod (146) passes through the fixed cylinder (232) and abuts against the support rod inside the rotating ring (231).

8. The water-saving spray device for surface irrigation according to claim 6, characterized in that: A spring (233) is provided between the top of the fixed cylinder (232) and the inner wall of the nozzle (14), and a top ring (215) is integrally formed on the side wall of the rotating rod (21). The top ring (215) is located between the fixed cylinder (232) and the bracket (147).

Images