A multi-functional sprinkler control apparatus and method for large sprinkler systems

Abstract

The application discloses a multifunctional nozzle control device and method for a large-scale sprinkling irrigation machine, and relates to the technical field of agricultural equipment.The multifunctional nozzle control device comprises a main pipeline, a joint is communicated with the upper surface of the main pipeline, a water pipe is connected to the joint through a three-way pipe, a winding mechanism for winding the water pipe is fixed to the surface of the main pipeline, the winding mechanism comprises a fixed frame fixed to the surface of the main pipeline, and a winding wheel is rotatably arranged on the upper surface of the fixed frame.The multifunctional nozzle control device and method for the large-scale sprinkling irrigation machine can wind and release the water pipe through the winding wheel, so that the height of the nozzle spraying is controlled, irrigation of different crops, fertilization of different types of fertilizers, spraying of the front and back surfaces of leaves and other functions are realized, the multifunctional nozzle control device and method are flexible and applicable in actual application, and the mainstream trend of the development of the sprinkling irrigation machine is adapted.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, and in particular to a multifunctional sprinkler head control device and method for large sprinkler irrigation machines. Background Technology

[0002] Currently, large-scale sprinkler irrigation machines mainly include: pointer sprinkler irrigation machines and translational sprinkler irrigation machines. Pointer sprinkler irrigation machines are large-scale sprinkler irrigation machines with nozzles mounted on pipes supported on automatically moving supports, rotating around a center point equipped with a water supply system while spraying water. Translational sprinkler irrigation machines are large-scale sprinkler irrigation machines that move in one direction, and their pipe supports are divided into multiple groups that need to be assembled and spliced.

[0003] Current large-scale sprinkler irrigation machines are typically equipped with multiple nozzles. These nozzles are connected to a support frame via water pipes, and the nozzles are suspended in the air to spray irrigation onto the land. However, aerial sprinkler irrigation has certain drawbacks. Some of the water evaporates as it falls to the ground, reducing water utilization. Furthermore, aerial sprinkler irrigation presents problems when used for fertilization or pesticide application. Firstly, when used for fertilization, some types of fertilizers applied directly to the leaves may cause leaf burn. Secondly, when used for pesticide application, the pesticide solution only reaches the front of the leaves, making it difficult to cover the back. When spraying on the back of the leaves, manual adjustment of the nozzle position is required, which is cumbersome.

[0004] In recent years, with the development trend of sprinkler irrigation machines, multi-functionality has become the mainstream trend. However, the existing sprinkler irrigation machines have limited functions in the nozzle control equipment, which makes it difficult to meet the multi-functional needs of sprinkler irrigation machines when they are actually applied to irrigate different crops, apply different types of fertilizers, and spray pesticides on both sides of the leaves. Summary of the Invention

[0005] This invention discloses a multi-functional sprinkler head control device and method for large sprinkler irrigation machines, aiming to solve the technical problem of limited functions of sprinkler heads in existing sprinkler irrigation machines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-functional sprinkler head control device for a large sprinkler irrigation machine includes a main pipe with a connector on its upper surface. The connector is connected to a water pipe via a tee pipe. A winding mechanism for winding the water pipe is fixed to the surface of the main pipe. The winding mechanism includes a fixed frame fixed to the surface of the main pipe, a winding wheel rotatably mounted on the upper surface of the fixed frame, and a limiting mechanism fixed to the outer wall of the fixed frame. The limiting mechanism is used to evenly wind the water pipe around the surface of the winding wheel. A sprinkler head is connected to the lower end of the water pipe, and a nozzle is formed on the outer surface of the lower end of the water pipe. A pipe-pressing mechanism is mounted on the upper surface of the fixed frame in a height-adjustable manner. The pipe-pressing mechanism is located below the winding reel. During the winding process, the outer surface of the water pipe contacts the pipe-pressing mechanism, preventing water from spraying from the nozzle but allowing water to spray from the spray head. When the winding reel completely releases the water pipe, the water pipe does not contact the pipe-pressing mechanism, and the lower end of the water pipe lies flat on the ground, allowing water to spray from the nozzle. A drain valve assembly is provided at the connection between the water pipe and the spray head. The drain valve assembly closes during the spraying process to prevent water from spraying from the spray head.

[0008] The water hose is shortened by winding up the reel, allowing the nozzle to spray while suspended in the air. Alternatively, the reel can be used to loosen the hose, allowing the end of the hose to contact the ground. Combined with the hose pressing mechanism, the hose can be sprayed while suspended in the water spraying state, or sprayed through the nozzle when in contact with the ground, thus achieving two forms of spraying operations.

[0009] In a preferred embodiment, the winding mechanism further includes support frames fixed to both sides of the fixed frame surface, a telescopic plate elastically connected to the upper end of the support frame, a second spring provided between the telescopic plate and the support frame, a first motor fixedly provided on the outer wall of the telescopic plate, and the output end of the first motor fixedly connected to one side of the winding wheel.

[0010] The first motor drives the winding wheel to wind and unwind the water pipe. After the water pipe is wound up, the weight of the winding wheel increases, and it moves downward along the support frame through the telescopic plate, thus contacting the pipe pressing mechanism below, thereby squeezing the water pipe and preventing water from spraying out of the nozzle.

[0011] In a preferred embodiment, the winding reel has an internal groove with an "L"-shaped cross-section, and one end of the water pipe is rotatably connected to a T-joint to ensure that the water pipe does not twist during the winding process.

[0012] In a preferred embodiment, the limiting mechanism includes a second motor fixedly mounted on the outer wall of the fixed frame. The output end of the second motor is fixedly connected to a threaded rod. A movable plate is threadedly connected to the outer wall of the threaded rod. A limiting groove is formed on the surface of the movable plate. The movable plate is slidably connected to the outer wall of the fixed frame.

[0013] By setting a second motor to drive the moving plate on the threaded rod to move back and forth, the water pipe is evenly wound on the surface of the take-up wheel.

[0014] In a preferred embodiment, the pressing mechanism includes a mounting plate fixedly disposed on the inner wall of the support frame. The mounting plate is fixedly fixed to the support frame by bolts. Two sets of side plates are fixedly disposed on the surface of the mounting plate. Several sets of pressure rollers are rotatably disposed between the two sets of side plates. The upper surface of the side plate is an arc surface, and the several sets of pressure rollers are arranged along the arc surface.

[0015] By setting pressure rollers to contact the water pipe in the winding state, the channel connecting the nozzle inside the water pipe will be blocked as the two squeeze each other, thus ensuring that no water will come out of the nozzle during the suspended irrigation process. In addition, several sets of pressure rollers are arranged along the arc surface, which helps to increase the contact surface and force surface between the pressure rollers and the water pipe in the winding state, ensuring the effect of pressing the pipe.

[0016] In a preferred embodiment, the upper part of the water pipe is a thick pipe, and the lower part is a thin pipe. A main passage cavity is opened at the center of both the thick and thin pipes. A secondary passage cavity is opened at a position away from the main passage cavity in both the thick and thin pipes. There are two secondary passage cavities distributed vertically in the thick pipe and two secondary passage cavities distributed horizontally in the thin pipe. The secondary passage cavities are connected to the nozzles. The main passage cavity is not connected to the secondary passage cavity. The main passage cavity is connected to the nozzle. The tee pipe is connected to both the main passage cavity and the secondary passage cavity. The nozzles are equally spaced on both sides of the thin pipe.

[0017] In a preferred embodiment, the relief valve assembly includes a fixing frame disposed inside the lower end of the thin tube. The fixing frame is fixedly disposed inside the lower end of the thin tube. A sealing plate is connected to the lower surface of the fixing frame by a first spring. The outer opening size of the sealing plate matches the inner opening size of the main passage cavity. An overflow cavity is opened at the lower end of the main passage cavity. The inner opening size of the overflow cavity is larger than the inner opening size of the main passage cavity.

[0018] By setting up a sealing plate and a first spring, water can be sprayed out only from the nozzle during ground irrigation, instead of spraying water from the sprinkler head, ensuring water application accuracy while also saving water resources.

[0019] A method of using a multi-functional sprinkler head control device for a large sprinkler irrigation machine includes the following steps.

[0020] S1. Suspended irrigation water source: The water pump supplies water to the main pipeline, and each main pipeline will distribute the water to the water pipe and spray it outward along the nozzle at the lower end, irrigating the crops from top to bottom.

[0021] S2. Applying ground fertilizer: Based on S1, the water pump introduces the water source for the mixed fertilizer into the main pipeline. The height of the nozzle is adjusted by the reel to make the nozzle contact the ground, so that the sprayed fertilizer contacts the ground and not the leaf surface, thus preventing leaf burn.

[0022] S3, All-round foliar spraying: Based on S1, the water pump introduces the water source mixed with pesticides into the main pipeline. The retractor reciprocates to retract and release, causing the nozzle to move up and down, ensuring that the nozzle repeatedly moves to spray above and below the leaf surface, achieving all-round spraying of the leaves.

[0023] S4. Irrigation Water Source: Based on S1, the reel is completely released from the water pipe, and a portion of the water in the pipe will be diverted and sprayed out from the nozzle, thus changing the sprinkler irrigation method to ground sprinkler irrigation. As the truss moves, the water pipe will move between the crops to sprinkle, reducing water loss.

[0024] As can be seen from the above, the multifunctional sprinkler head control device and method for large sprinkler irrigation machines provided by the present invention have the following technical effects.

[0025] Firstly, the water pipe is wound and unwound using a retractor in the sprinkler control device, thereby controlling the spray height of the sprinkler to adapt to irrigation of crops at different heights. When the water pipe is fully unwound, the end of the pipe will touch the ground, allowing the nozzles to spray water to both sides for precise irrigation of the crop roots. Additionally, a sealing plate can prevent the sprinkler from spraying water, thus saving water resources. This invention can be provided in two forms for use on large sprinkler irrigation machines, effectively increasing crop yields and saving water resources.

[0026] Secondly, the height of the sprinkler head can be changed by the rewind wheel in the sprinkler head control device, so that the sprinkler irrigation machine can be adjusted accordingly when applied to different scenarios to be suitable for suspended sprinkler irrigation, application of ground fertilizer, and spraying pesticides below the leaf surface, thus enabling the sprinkler head to better meet the functional requirements of different scenarios.

[0027] Thirdly, several pressure rollers of the pipe pressing mechanism can contact the water pipe in the winding state. As the two squeeze each other, the channel connecting the nozzle inside the water pipe will be blocked, thus ensuring that no water will come out of the nozzle during the suspended irrigation process. Several sets of pressure rollers are arranged along the arc surface, which helps to increase the contact surface and force surface between the pressure rollers and the water pipe in the winding state, ensuring the effect of pipe pressing.

[0028] Fourthly, the second motor of the limiting mechanism can drive the threaded rod to rotate in both directions, thereby driving the moving plate to move back and forth. Since the water pipe passes through the limiting groove of the moving plate, the reciprocating moving plate can make the water pipe evenly wound on the surface of the winding wheel. Attached Figure Description

[0029] Figure 1This is an isometric structural diagram of a multifunctional sprinkler head control device for a large sprinkler irrigation machine proposed in this invention.

[0030] Figure 2 This is a schematic diagram of the threaded rod structure of a multi-functional sprinkler head control device for a large sprinkler irrigation machine, as proposed in this invention.

[0031] Figure 3 This is a schematic diagram of the second spring structure of a multi-functional sprinkler head control device for a large sprinkler irrigation machine proposed in this invention.

[0032] Figure 4 This is a schematic diagram of the pressure roller structure of a multi-functional sprinkler head control device for a large sprinkler irrigation machine, as proposed in this invention.

[0033] Figure 5 This is a schematic diagram of the thick pipe structure of a multi-functional sprinkler head control device for a large sprinkler irrigation machine proposed in this invention.

[0034] Figure 6 This is a schematic diagram of the exploded structure of the thick and thin pipes of a multi-functional sprinkler head control device for a large sprinkler irrigation machine proposed in this invention.

[0035] Figure 7 This invention proposes a multi-functional sprinkler head control device for large sprinkler irrigation machines. Figure 6 Enlarged structural diagram at point A in the middle.

[0036] Figure 8 This invention proposes a multi-functional sprinkler head control device for large sprinkler irrigation machines. Figure 6 Enlarged structural diagram at point B.

[0037] Figure 9 This is a cross-sectional view of the lower end of the thin tube of a multi-functional sprinkler head control device for a large sprinkler irrigation machine proposed in this invention.

[0038] In the diagram: 1. Main pipe; 2. Connector; 3. Water pipe; 301. Thick pipe; 302. Thin pipe; 303. Nozzle; 304. Main passage cavity; 305. Secondary passage cavity; 306. Nozzle; 307. Overflow cavity; 308. Fixing frame; 309. First spring; 310. Sealing plate; 4. Winding mechanism; 401. Fixing frame; 402. Support frame; 403. Telescopic plate; 404. Second spring; 405. First motor; 406. Winding wheel; 407. Through groove; 5. Limiting mechanism; 501. Second motor; 502. Threaded rod; 503. Moving plate; 504. Limiting groove; 6. Pipe pressing mechanism; 601. Mounting plate; 602. Bolt; 603. Side plate; 604. Pressure roller. Detailed Implementation

[0039] 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.

[0040] The invention discloses a multi-functional sprinkler head control device and method for large sprinkler irrigation machines, which is mainly applied to scenarios where pipe irrigation and sprinkler irrigation are combined with large sprinkler irrigation machines.

[0041] Reference Figures 1-4 A multi-functional sprinkler head control device for a large sprinkler irrigation machine includes a main pipe 1, a connector 2 connected to the upper surface of the main pipe 1, a water pipe 3 connected to the connector 2 via a tee pipe, a winding mechanism 4 for winding the water pipe 3 fixed to the surface of the main pipe 1, the winding mechanism 4 including a fixing frame 401 fixed to the surface of the main pipe 1, a winding wheel 406 rotatably mounted on the upper surface of the fixing frame 401, and a limiting mechanism 5 fixed to the outer wall of the fixing frame 401 for evenly winding the water pipe 3 around the surface of the winding wheel 406, the lower end of the water pipe 3 being connected to a sprinkler head. 303. A nozzle 306 is provided on the outer surface of the lower end of the water pipe 3. A pipe pressing mechanism 6 is installed on the upper surface of the fixed frame 401. The pipe pressing mechanism 6 is located below the winding wheel 406. During the winding process of the winding wheel 406 winding the water pipe 3, the outer surface of the water pipe 3 will contact the pipe pressing mechanism 6, so that the nozzle 306 will not spray water, but the nozzle 303 will spray water. When the winding wheel 406 completely releases the water pipe 3, the water pipe 3 will not contact the pipe pressing mechanism 6. At this time, the lower end of the water pipe 3 will lie flat on the ground, the nozzle 306 will spray water, but the nozzle 303 will not spray water.

[0042] In this embodiment, the main pipes 1 can be extended by connecting with each other and installed on the truss of a large sprinkler irrigation machine. As the water pump supplies water to the main pipes 1, each main pipe 1 will divert the water to the water pipe 3 and spray it outward along the nozzle 303 at the lower end. The set winding wheel 406 can be rotated to wind and shorten the water pipe 3, so that the nozzle 303 sprays water in a suspended state. At the same time as the water pipe 3 is winding, the outer surface of the water pipe 3 will contact the pipe pressing mechanism 6, thereby squeezing the water pipe 3 so that the nozzle 306 at the lower end will not spray water, but only spray water through the nozzle 303. During this process, the height of the nozzle 303 can be adjusted to adapt to crops of different heights.

[0043] In addition, during the early irrigation of crops, due to the small size of the crop seedlings, the water loss from irrigation through the nozzles 303 at high altitudes is significant. Therefore, by rotating the reel 406, the water pipe 3 can be completely loosened, allowing the end of the water pipe 3 to contact the ground. At this time, the water pipe 3 does not contact the pipe pressing mechanism 6, ensuring that a portion of the water in the water pipe 3 is diverted and sprayed outward from the nozzles 306. This adjusts the irrigation method. As the truss moves, the water pipe 3 moves between the crops for irrigation, reducing water loss and shortening the contact distance between the water source and the roots, resulting in better irrigation.

[0044] In addition to watering, sprinkler irrigation machines can also fertilize and spray pesticides. The following is a detailed description of the fertilization and pesticide spraying scenarios.

[0045] During fertilization, the sprinkler head 303 can be adjusted to prevent direct contact between the fertilizer and the leaves when applying fertilizers that may cause leaf burn. This avoids the risk of fertilizer burning and makes direct application of fertilizer to the ground safer. Furthermore, during pesticide application, the sprinkler head 303 can be lowered below the leaf surface to spray the underside of the leaves, avoiding the limitation of traditional sprinklers that can only spray the front side. This results in better pest control. Therefore, this application is applicable to suspended sprinkler irrigation, application of ground fertilizer, and spraying pesticides below the leaf surface, offering more comprehensive functionality.

[0046] Specifically, when applying ground fertilizer, a water pump supplies water for the fertilizer mixture into the main pipe. The nozzle height is adjusted using a reel to ensure the nozzle contacts the ground, allowing the sprayed fertilizer to contact the ground but not the leaves, thus preventing leaf burn. "Fertilizer leaf burn" refers to: 1. Excessive fertilizer concentration: When too much fertilizer is applied or the concentration is too high, nutrients accumulate on the leaves, causing burns and leading to leaf drying; 2. Excessive temperature: High temperatures cause rapid water evaporation from plants. Combined with the high concentration of nutrients after fertilization, the increased heat leads to leaf burn; 3. High humidity: High temperature and high humidity create ideal conditions for plant growth but also for pathogens. In such environments, nitrogen fertilizers decompose rapidly, releasing large amounts of ammonia gas, which directly burns the plant leaves.

[0047] When performing all-around foliar spraying, the water pump first introduces the pesticide-mixed water into the main pipeline. The retractor reciprocates, winding and unwinding the nozzle, causing it to move up and down. This ensures the nozzle repeatedly sprays both above and below the leaf surface, achieving comprehensive coverage. This also covers the undersides of leaves, areas difficult to reach with existing techniques, reducing the probability of pest infestations.

[0048] In the above technical solution, when the nozzle 303 touches the ground, the water pipe 3 is not completely released, and the nozzle 306 will not spray water.

[0049] Reference Figures 1-3 In a preferred embodiment, the winding mechanism 4 further includes support frames 402 fixed on both sides of the surface of the fixed frame 401. A telescopic plate 403 is elastically connected to the upper end of the support frame 402. A second spring 404 is provided between the telescopic plate 403 and the support frame 402. A first motor 405 is fixedly provided on the outer wall of the telescopic plate 403. The output end of the first motor 405 is fixedly connected to one side of the winding wheel 406.

[0050] In this embodiment, the first motor 405 of the winding mechanism 4 can drive the winding wheel 406 to wind and unwind the water pipe 3. After winding the water pipe 3, the weight of the winding wheel 406 increases, and it will move downward along the support frame 402 through the telescopic plate 403, thereby contacting the pipe pressing mechanism 6 below, thereby squeezing the water pipe 3 and preventing the nozzle 306 from spraying water outward.

[0051] like Figure 3 Specifically, the take-up reel 406 has a through groove 407 inside, and the cross section of the through groove 407 is "L" shaped. One end of the water pipe 3 is rotatably connected to the tee pipe to ensure that the water pipe 3 will not twist during the process of the take-up reel 406 taking up the water pipe 3, and to ensure the winding effect.

[0052] To improve the winding effect of the water pipe 3, the limiting mechanism 5 further includes a second motor 501 fixedly installed on the outer wall of the fixed frame 401. The output end of the second motor 501 is fixedly connected to a threaded rod 502. A movable plate 503 is threadedly connected to the outer wall of the threaded rod 502. A limiting groove 504 is opened on the surface of the movable plate 503. The movable plate 503 is slidably connected to the outer wall of the fixed frame 401.

[0053] In this embodiment, the second motor 501 of the limiting mechanism 5 can drive the threaded rod 502 to rotate in both directions, thereby driving the moving plate 503 to move back and forth. Since the water pipe 3 passes through the limiting groove 504 of the moving plate 503, the reciprocating moving plate 503 can make the water pipe 3 evenly wound on the surface of the take-up wheel 406.

[0054] Reference Figures 2-4 In a preferred embodiment, the pressing mechanism 6 includes a mounting plate 601 fixedly disposed on the inner wall of the support frame 402. The mounting plate 601 is fixed to the support frame 402 by bolts 602. Two sets of side plates 603 are fixedly disposed on the surface of the mounting plate 601. Several sets of pressing rollers 604 are rotatably disposed between the two sets of side plates 603.

[0055] In this embodiment, several pressure rollers 604 of the pipe pressing mechanism 6 can contact the water pipe 3 in the winding state. As the two are squeezed against each other, the channel connecting the nozzle 306 inside the water pipe 3 will be blocked, thereby ensuring that the nozzle 306 will not spray water during the suspended irrigation process.

[0056] Specifically, the upper surface of the side plate 603 is an arc surface, and several sets of pressure rollers 604 are arranged along the arc surface, which helps to improve the contact surface and force-bearing surface between the pressure rollers 604 and the water pipe 3 in the winding state, and ensure the effect of pressing the pipe.

[0057] Reference Figures 5-9 In a preferred embodiment, the upper part of the water pipe 3 is a thick pipe 301, and the lower part is a thin pipe 302. A main passage 304 is provided at the center of the interior of both the thick pipe 301 and the thin pipe 302. A secondary passage 305 is provided at a position away from the main passage 304 in the interior of both the thick pipe 301 and the thin pipe 302. There are two secondary passages 305 located in the thin pipe 302 along the horizontal line. The secondary passages 305 are connected to the nozzles 306. The main passage 304 is not connected to the secondary passages 305. The main passage 304 is connected to the nozzle 303. The tee pipe is connected to both the main passage 304 and the secondary passages 305. The nozzles 306 are equally spaced on both sides of the thin pipe 302.

[0058] In this embodiment, during the winding process of the water pipe 3 being wound by the winding wheel 406, the upper part of the thick pipe 301 will come into contact with and squeeze the lower pressure roller 604, causing the secondary passage 305 inside the thick pipe 301 to be squeezed, thereby blocking the water source in the secondary passage 305 from flowing to the nozzle 303, so that the water source can only flow from the main passage 304 to the nozzle 303 for irrigation. During the process of the water pipe 3 being released by the winding wheel 406, all the main passage 304 and secondary passage 305 will be connected to the water source, so that the water source can be sprayed outward from the nozzle 306, thereby spraying the water source to the roots of the crops on both sides.

[0059] Among them, there are two secondary passages 305 located in the coarse pipe 301 along the vertical line, which ensures that the secondary passages 305 in the vertical direction are more easily squeezed and blocked from the water source during the winding process of the coarse pipe 301.

[0060] In the above technical solution, the ground sprinkler irrigation does not require the sprinkler head 303 to spray water outwards. To avoid the sprinkler head 303 spraying water outwards, the specific solution is as follows.

[0061] like Figures 6-9 As shown, in a preferred embodiment, a drain valve assembly is provided at the connection between the water pipe 3 and the nozzle 303. The drain valve assembly closes during the spraying of water from the nozzle 306 to prevent the nozzle 303 from spraying water. The drain valve assembly includes a fixing frame 308 disposed inside the lower end of the thin pipe 302. A sealing plate 310 is connected to the lower surface of the fixing frame 308 by a first spring 309. The outer opening size of the sealing plate 310 matches the inner opening size of the main passage 304. An overflow cavity 307 is provided at the lower end of the main passage 304. The inner opening size of the overflow cavity 307 is larger than the inner opening size of the main passage 304.

[0062] In this embodiment, during ground sprinkler irrigation, the secondary passage 305 is connected to the water source, which reduces the water pressure in the main passage 304. This causes the sealing plate 310 to retract elastically through the first spring 309, thereby blocking the main passage 304. This prevents the nozzle 303 from spraying water, ensuring that the nozzle 306 sprays water to both sides. This ensures water application accuracy while also saving water resources. During suspended sprinkler irrigation, the secondary passage 305 is blocked, and the water pressure in the main passage 304 increases. This causes the sealing plate 310 to overcome the elasticity of the first spring 309 and move downward to the overflow chamber 307, ensuring that water can flow from the overflow chamber 307 to the nozzle 303 for spraying.

[0063] 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 multi-functional sprinkler head control device for large sprinkler irrigation machines, characterized in that, Includes a main pipe (1), the upper surface of the main pipe (1) is connected to a connector (2), the connector (2) is connected to a water pipe (3) through a tee pipe, the surface of the main pipe (1) is fixed with a winding mechanism (4), the winding mechanism (4) includes a fixed frame (401) fixed to the surface of the main pipe (1), and a winding wheel (406) is rotatably arranged on the upper surface of the fixed frame (401). The outer wall of the fixed frame (401) is fixedly provided with a limiting mechanism (5) that can evenly wind the water pipe (3) around the surface of the winding wheel (406); The lower end of the water pipe (3) is connected to a nozzle (303), which can rotate to spray water. The lower end of the water pipe (3) has a nozzle (306) on its outer surface. A pipe pressing mechanism (6) is installed on the upper surface of the fixed frame (401). The pipe pressing mechanism (6) is located below the winding wheel (406). During the winding process of the winding wheel (406) winding the water pipe (3), the outer surface of the water pipe (3) will contact the pipe pressing mechanism (6), so that the nozzle (306) will not spray water, but the nozzle (303) will spray water. When the winding wheel (406) completely releases the water pipe (3), the water pipe (3) will not contact the pipe pressing mechanism (6). At this time, the lower end of the water pipe (3) will lie flat on the ground, and the nozzle (306) will spray water. A drain valve assembly is provided at the connection between the water pipe (3) and the nozzle (303). The drain valve assembly will close during the spraying of water from the nozzle (306) to prevent the nozzle (303) from spraying water. The pressing mechanism (6) is provided with several sets of pressing rollers (604). The upper part of the water pipe (3) is a thick pipe (301) and the lower part is a thin pipe (302). A main passage cavity (304) is opened at the center of the inside of both the thick pipe (301) and the thin pipe (302). A secondary passage cavity (305) is opened at a position away from the main passage cavity (304) inside the thick pipe (301) and the thin pipe (302). There are two secondary passages (305) located in the thick tube (301) along the vertical line, and two secondary passages (305) located in the thin tube (302) along the vertical line. The secondary passages (305) are connected to the nozzle (306). The main passage (304) is not connected to the secondary passages (305). The main passage (304) is connected to the nozzle (303). The tee pipe is connected to both the main passage (304) and the secondary passages (305). The drain valve assembly includes a fixing frame (308) disposed inside the lower end of the thin tube (302). A sealing plate (310) is connected to the lower surface of the fixing frame (308) by a first spring (309). The outer opening size of the sealing plate (310) matches the inner opening size of the main passage cavity (304) of the thin tube (302). An overflow cavity (307) is provided at the lower end of the main passage cavity (304) of the thin tube (302). The inner opening size of the overflow cavity (307) is larger than the inner opening size of the main passage cavity (304) of the thin tube (302).

2. The multi-functional sprinkler head control device for a large sprinkler irrigation machine according to claim 1, characterized in that, The winding mechanism (4) further includes a support frame (402) fixed on both sides of the surface of the fixed frame (401). A telescopic plate (403) is elastically connected to the upper end of the support frame (402). A second spring (404) is provided between the telescopic plate (403) and the support frame (402). A first motor (405) is fixedly provided on the outer wall of the telescopic plate (403). The output end of the first motor (405) is fixedly connected to one side of the winding wheel (406).

3. A multi-functional sprinkler head control device for a large sprinkler irrigation machine according to claim 2, characterized in that, The winding reel (406) has a through groove (407) inside, and the through groove (407) has an "L" shaped cross section. One end of the water pipe (3) is rotatably connected to the tee pipe.

4. A multi-functional sprinkler head control device for a large sprinkler irrigation machine according to claim 3, characterized in that, The limiting mechanism (5) includes a second motor (501) fixedly installed on the outer wall of the fixed frame (401). The output end of the second motor (501) is fixedly connected to a threaded rod (502). A movable plate (503) is threadedly connected to the outer wall of the threaded rod (502). A limiting groove (504) is opened on the surface of the movable plate (503). The movable plate (503) is slidably connected to the outer wall of the fixed frame (401).

5. A multi-functional sprinkler head control device for a large sprinkler irrigation machine according to claim 4, characterized in that, The pressing mechanism (6) includes a mounting plate (601) fixedly installed on the inner wall of the support frame (402). The mounting plate (601) is fixed to the support frame (402) by bolts (602). Two sets of side plates (603) are fixedly installed on the surface of the mounting plate (601). Several sets of pressure rollers (604) are rotatably installed between the two sets of side plates (603). The upper surface of the side plate (603) is an arc surface, and the several sets of pressure rollers (604) are arranged along the arc surface.

6. The method of using a multi-functional sprinkler head control device for a large sprinkler irrigation machine according to claim 5, characterized in that, Includes the following steps: S1, Suspended irrigation water source: The water pump delivers water to the main pipe (1), and each main pipe (1) will divert the water source to the water pipe (3) and spray it outward along the nozzle (303) at the lower end, irrigating the crops from top to bottom; S2, Apply ground fertilizer: Based on S1, the water pump introduces the water source of the mixed fertilizer into the main pipe (1), and adjusts the height of the nozzle (303) by the take-up wheel (406) so that the nozzle (303) contacts the ground, so that the sprayed fertilizer contacts the ground and does not contact the leaf surface, thus preventing leaf burn. S3, All-round spraying of leaves: Based on S1, the water pump introduces the water source mixed with pesticide into the main pipe (1), and the retractor (406) reciprocates to retract and release, so that the nozzle (303) moves up and down, ensuring that the nozzle (303) repeatedly moves to the top and bottom of the leaf surface for spraying, so as to spray the leaves in an all-round way. S4, Dragging pipe irrigation water source: Based on S1, the reel (406) completely loosens the water pipe (3), and the water source in the water pipe (3) will spray out from the nozzle (306), thereby changing the irrigation method to dragging pipe irrigation. As the truss moves, the water pipe (3) will move between crops for irrigation, reducing water loss.

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