Energy-saving irrigation method for hydraulic engineering

Abstract

The invention relates to the technical field of water conservancy irrigation devices, in particular to an energy-saving irrigation method for a water conservancy project, which comprises the following steps: S1, water flow flows in through a water spraying pipeline, a plurality of groups of mounting pipes are uniformly arranged on the water spraying pipeline, and when the water flow passes through the mounting pipes, the water flow obliquely upwards sprays a tank through an upper spraying assembly, so that the upper spraying assembly forms rotating power; meanwhile, water flow upwards sprayed by the upper spraying assembly is scattered to the periphery; s2, a water spraying pipe is arranged on the water spraying pipeline and located under the mounting pipe, a water spraying mechanism is arranged under the water spraying pipe, and when water flow flows through the water spraying pipe, rotation of an upper spraying assembly controls the water spraying mechanism to conduct sprinkling irrigation; s3, when the upper spraying assembly rotates, the water spraying mechanism sequentially carries out transverse spray irrigation, obliquely downward spray irrigation and vertically downward mist spray irrigation, and by means of ingenious cooperation of a valve ring and a water spraying ring, the spray irrigation requirements of different distances of far, middle and near are met.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy irrigation devices, and in particular to an energy-saving irrigation method for water conservancy projects. Background Art

[0002] The construction of water conservancy projects can effectively regulate the supply of water resources and improve the utilization rate of water sources. Through the use of water conservancy projects, rainwater can be stored, water can be stored, and water resources can be dispatched to solve the water shortage problem and ensure the irrigation needs of farmland.

[0003] After searching, it was found that an assembled irrigation device for water conservancy projects disclosed in publication number CN217160674U includes a rotating sprinkler head for aerial jet irrigation, a ground-penetrating irrigation seat for underground irrigation, and a plurality of sections of extended water pipes connected end to end for connecting the ground-penetrating irrigation seat and the rotating sprinkler head. The lower end of the ground-penetrating irrigation seat is cooperated to be connected to a conical drill bit or an irrigation head. The ground-penetrating irrigation seat includes a conical conduit. The lower end of the conical conduit is provided with a first threaded inner hole threadedly connected to the conical drill bit or the irrigation head.

[0004] The above patent still has some shortcomings in actual use. When the irrigation device is in use, the spray device of the nozzle pipe is often scattered in a circular shape. Therefore, the position close to the nozzle may not be sprayed, thereby affecting the irrigation effect.

[0005] Based on this, the invention discloses an energy-saving irrigation method for water conservancy projects. Summary of the invention

[0006] In order to solve the problems raised in the background technology, the present invention provides an energy-saving irrigation method for water conservancy projects, comprising the following steps: S1. Water flows in through a water spray pipe, and several groups of installation pipes are evenly arranged on the water spray pipe. When the water flows through the installation pipe, it passes through the upper spray assembly and sprays the tank obliquely upward, so that the upper spray assembly forms a rotating force, and at the same time, the water sprayed upward by the upper spray assembly is dispersed to the surroundings; S2. A water spray pipe is arranged on the water spray pipeline directly below the installation pipe, and a water spray mechanism is arranged directly below the water spray pipe. When water flows through the water spray pipe, the rotation of the upper spray assembly controls the water spray mechanism to perform sprinkler irrigation; S3. When the upper spray assembly rotates, the water spray mechanism performs horizontal spraying, oblique downward spraying and vertical downward spraying in a mist form in sequence.

[0007] As a further improvement of the technical solution, the upper spray assembly includes a rotating rod, which is rotatably connected to the mounting tube, one end of the rotating rod extends outside the mounting tube and is fixedly connected to a driving impeller, and the other end extends to the bottom end of the water spray mechanism, and the top of the mounting tube is connected to a first nozzle, and the first nozzle sprays in an obliquely upward direction and is arranged opposite to the driving impeller blade area, so as to drive the driving impeller to rotate; Preferably, the upper spray assembly includes a rotating rod, which is rotatably connected to the mounting tube, one end of the rotating rod extends outside the mounting tube and is fixedly connected to a driving impeller, and the other end extends to the bottom end of the water spraying mechanism. A first nozzle is connected to the top of the mounting tube, and the first nozzle is arranged to spray in an obliquely upward direction and opposite to the driving impeller blade area, so as to drive the driving impeller to rotate.

[0008] As a further improvement of the present technical solution, the water spray mechanism includes a first water spray assembly, which is fixedly connected to the bottom end of the water spray pipe and communicated with the water spray pipe, a second water spray assembly is fixedly arranged below the first water spray assembly, a third water spray assembly is fixedly arranged below the second water spray assembly, and the first water spray assembly, the second water spray assembly and the third water spray assembly are all communicated with the water spray pipe.

[0009] As a further improvement of the present technical solution, the first water spray assembly includes a first water spray ring fixedly connected to the bottom end of the water spray pipe, the inner ring of the first water spray ring is connected to the water spray pipe, a plurality of second nozzles are evenly connected to the periphery of the first water spray ring, the spraying direction of the second nozzles is parallel to the horizontal plane, and a first water inlet is opened on the inner wall of the inner ring of the first water spray ring.

[0010] As a further improvement of the present technical solution, the first water spray assembly also includes a first valve ring, which is fixedly connected to the rotating rod, and the first valve ring is located in the inner ring of the first water spray ring and fits with the outer wall of the inner ring of the first water spray ring. A first opening is opened on the first valve ring, and the height of the first opening is adapted to the height of the first water inlet.

[0011] Preferably, the second water spray assembly includes a second water spray ring, the inner ring of the second water spray ring is connected to the water spray pipe, the outer periphery of the second water spray ring is evenly connected to a plurality of third nozzles, the spraying direction of the third nozzles is inclined downward, and a second water inlet is opened on the inner wall of the inner ring of the second water spray ring.

[0012] As a further improvement of the present technical solution, the second water spray assembly also includes a second valve ring, which is fixedly connected to the third water spray ring, the second valve ring is located in the inner ring of the second water spray ring, and is in contact with the outer wall of the inner ring of the second water spray ring, and a second opening is provided on the second valve ring, and the height of the second opening is adapted to the height of the second water inlet.

[0013] Preferably, the third water spray assembly includes a third water spray ring, the third water spray ring is fixedly connected to the bottom of the second water spray ring, the inner ring of the third water spray ring is connected to the water spray pipe, the bottom of the third water spray ring is connected to a flow pipe, the bottom of the flow pipe is connected to a fourth nozzle, the spraying direction of the fourth nozzle is set vertically downward, and the fourth nozzle sprays in a mist form; a third water inlet is opened on the inner wall of the inner ring of the third water spray ring.

[0014] As a further improvement of the present technical solution, the third water spray assembly also includes a third valve ring, which is fixedly connected to the rotating rod, and is located in the inner ring of the third water spray ring and fits with the outer wall of the inner ring of the third water spray ring. A third opening is provided on the third valve ring, and the height of the third opening is adapted to the height of the third water inlet.

[0015] Preferably, the radii of the first water spray ring, the second water spray ring and the third water spray ring are successively larger, the opening area of ​​the first opening is smaller than the opening area of ​​the second opening, and the second opening and the third opening are located on the same vertical line; When the first through opening is in contact with the first water inlet, the second through opening is not in contact with the second water inlet; When the first through opening is not in contact with the first water inlet, the second through opening is in contact with the second water inlet; When the first opening is completely separated from the first water inlet, the second opening is about to be fitted with the second water inlet, and at this time, the third opening is fitted with the third water inlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the energy-saving irrigation method for water conservancy projects, through the cooperation of the upper spray assembly and the water spray pipe, the first nozzle in the upper spray assembly always sprays obliquely upward, drives the impeller to rotate, and then drives the rotating rod to rotate, which is conducive to breaking up the water flow to the surroundings of the water spray mechanism, increasing the coverage of the sprinkler irrigation, thereby reducing the dead angle of sprinkler irrigation in a larger range and improving the efficiency of sprinkler irrigation; secondly, by setting a water spray mechanism and its multi-level water spray assembly, the water spray mechanism includes a first water spray assembly, a second water spray assembly and a third water spray assembly, which respectively realize horizontal, oblique downward and vertical downward sprinkler irrigation. This multi-level design facilitates the adjustment of the sprinkler irrigation direction and angle according to actual needs, ensuring that the sprinkler irrigation needs in all directions are met, thereby achieving all-round sprinkler irrigation coverage and improving the uniformity and effect of irrigation.

[0017] 2. In the energy-saving irrigation method for water conservancy projects, the first valve ring, the second valve ring and the third valve ring respectively control the on and off of the first water spray ring, the second water spray ring and the third water spray ring through the clever cooperation of the valve ring and the water spray ring, which is conducive to the spraying of different water spray components in sequence during the rotation of the rotating rod, avoiding the waste of resources caused by simultaneous spraying, thereby realizing on-demand spraying and improving the utilization efficiency of water resources; secondly, through the design of different water spray ring radii and opening areas, the radii of the first water spray ring, the second water spray ring and the third water spray ring become larger in sequence, and the opening area of ​​the first opening is smaller than the opening area of ​​the second opening, so that the water pressure in the first water spray ring is the largest and the spraying distance is the farthest, the second water spray ring is second, and the third water spray ring is the smallest but sufficient to cover the area directly below, thereby realizing the spraying needs of different distances, such as far, medium and near, and improving the flexibility and adaptability of spraying.

[0018] 3. In this energy-saving irrigation method for water conservancy projects, through a reciprocating sprinkler irrigation method, the rotating rod drives the valve ring to rotate continuously, so as to realize the sequential sprinkler irrigation of different water spray components. This reciprocating sprinkler irrigation method is conducive to continuous and uniform coverage of the entire irrigation area, avoiding the phenomenon of local over-wetting or over-drying, thereby achieving efficient and energy-saving irrigation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial structural schematic diagram of the water spray pipeline of the present invention; Figure 3 It is a partial structural cross-sectional view of the water spray pipe of the present invention; Figure 4 It is a partial structural schematic diagram of the sprinkler irrigation mechanism of the present invention; Figure 5 It is a schematic diagram of the internal structure of the nozzle mechanism of the present invention; Figure 6A top view of a local structure of the nozzle mechanism of the present invention; Figure 7 This is a state schematic diagram of the nozzle mechanism of the present invention; Figure 8 The second state schematic diagram of the nozzle mechanism of the present invention; Fig. 9 The third state schematic diagram of the nozzle mechanism of the present invention; Fig.10 The fourth state schematic diagram of the nozzle mechanism of the present invention.

[0020] The meaning of each number in the figure is: 1. Water spray pipe; 2. Mounting pipe; 3. Top spray assembly; 4. Water spray pipe; 5. Water spray mechanism; 31. Rotating rod; 32. Driving impeller; 33. First nozzle; 51. First water spray assembly; 52. Second water spray assembly; 53. Third water spray assembly; 511, first water spray ring; 512, second nozzle; 513, first valve ring; 514, first opening; 515, first water inlet; 521, second water spray ring; 522, third nozzle; 523, second valve ring; 524, second opening; 525, second water inlet; 531, third water spray ring; 532, flow pipe; 533, fourth nozzle; 534, third valve ring; 535, third port; 536, third water inlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The existing sprinkler pipes of irrigation devices have the problem that the sprinkler cannot spray at a relatively stiff position during sprinkler irrigation.

[0023] To this end, the present invention provides an energy-saving irrigation method for water conservancy projects. Figure 1-Figure 4 As shown, the following steps are included: S1. Water flows in through the water spray pipe 1. Several groups of installation pipes 2 are evenly arranged on the water spray pipe 1. When the water flows through the installation pipe 2, it sprays the tank obliquely upward through the upper spray assembly 3, so that the upper spray assembly 3 forms a rotating force, and at the same time, the water sprayed upward by the upper spray assembly 3 is dispersed to the surroundings; S2. A water spray pipe 4 is arranged on the water spray pipe 1 directly below the mounting pipe 2, and a water spray mechanism 5 is arranged directly below the water spray pipe 4. When water flows through the water spray pipe 4, the upper spray assembly 3 rotates to control the water spray mechanism 5 to perform spray irrigation; S3, when the upper spray assembly 3 rotates, the water spray mechanism 5 performs horizontal spraying, oblique downward spraying and vertical downward spraying in a mist form in sequence.

[0024] For details, see Figure 2 and Figure 3 As shown, the upper spray assembly 3 includes a rotating rod 31, which is rotatably connected to the mounting tube 2, one end of the rotating rod 31 extends to the outside of the mounting tube 2 and is fixedly connected to a driving impeller 32, and the other end extends to the bottom end of the water spraying mechanism 5, and the top of the mounting tube 2 is connected to a first nozzle 33, and the first nozzle 33 sprays in an irrigation direction obliquely upward and is arranged opposite to the fan blade area of ​​the driving impeller 32, so as to drive the driving impeller 32 to rotate; that is, the first nozzle 33 always sprays obliquely upward, and then drives the fan blades of the impeller 32 by spraying, and then drives the rotation of the rotating rod 31, and at the same time, the rotation of the driving impeller 32 can also disperse the water sprayed by the first nozzle 33, so that the water spraying mechanism 5 can be sprayed in a large range with the dispersed water around it, and then cooperate with the lateral, oblique downward and vertical downward spraying of the water spraying mechanism 5 to achieve the effect of reducing dead corners in a larger range and improve the efficiency of spraying.

[0025] Among them, see Figure 2 and Figure 3 As shown, the water spray mechanism 5 includes a first water spray component 51, which is fixedly connected to the bottom end of the water spray pipe 4 and communicated with the water spray pipe 4, a second water spray component 52 is fixedly arranged below the first water spray component 51, a third water spray component 53 is fixedly arranged below the second water spray component 52, and the first water spray component 51, the second water spray component 52 and the third water spray component 53 are all communicated with the water spray pipe 4.

[0026] For further information, see Figure 4-Figure 6 As shown, the first water spray assembly 51 includes a first water spray ring 511 fixedly connected to the bottom end of the water spray pipe 4, the inner circle of the first water spray ring 511 is connected to the water spray pipe 4, and the outer periphery of the first water spray ring 511 is evenly connected to a plurality of second nozzles 512, the spraying direction of the second nozzles 512 is parallel to the horizontal plane, and a first water inlet 515 is provided on the inner wall of the inner circle of the first water spray ring 511; secondly, the first water spray assembly 51 also includes a first valve ring 513, the first valve ring 513 is fixedly connected to the rotating rod 31, the first valve ring 513 is located in the inner circle of the first water spray ring 511, and fits with the outer wall of the inner circle of the first water spray ring 511, and a first opening 514 is provided on the first valve ring 513, and the height of the first opening 514 is adapted to the height of the first water inlet 515.

[0027] For further information, see Figure 4-Figure 6 As shown, the second water spray assembly 52 includes a second water spray ring 521, the inner circle of the second water spray ring 521 is connected to the water spray pipe 4, and the outer periphery of the second water spray ring 521 is evenly connected to a plurality of third nozzles 522, and the spraying direction of the third nozzles 522 is inclined downward, and a second water inlet 525 is provided on the inner wall of the inner circle of the second water spray ring 521; secondly, the second water spray assembly 52 also includes a second valve ring 523, and the second valve ring 523 is fixedly connected to the third water spray ring 531, the second valve ring 523 is located in the inner circle of the second water spray ring 521, and fits with the outer wall of the inner circle of the second water spray ring 521, and a second opening 524 is provided on the second valve ring 523, and the height of the second opening 524 is adapted to the height of the second water inlet 525.

[0028] In addition, see Figure 3-Figure 6 As shown, the third water spray assembly 53 includes a third water spray ring 531, which is fixedly connected to the bottom of the second water spray ring 521, the inner circle of the third water spray ring 531 is connected to the water spray pipe 4, the bottom of the third water spray ring 531 is connected to a flow pipe 532, the bottom of the flow pipe 532 is connected to a fourth nozzle 533, the spraying direction of the fourth nozzle 533 is vertically downward, and the fourth nozzle 533 sprays in a mist form; a third water inlet 536 is provided on the inner wall of the inner circle of the third water spray ring 531, and secondly, the third water spray assembly 53 also includes a third valve ring 534, the third valve ring 534 is fixedly connected to the rotating rod 31, the third valve ring 534 is located in the inner circle of the third water spray ring 531, and fits with the outer wall of the inner circle of the third water spray ring 531, and a third opening 535 is provided on the third valve ring 534, and the height of the third opening 535 is adapted to the height of the third water inlet 536.

[0029] In addition, see Figure 4 As shown, the radii of the first water spray ring 511, the second water spray ring 521 and the third water spray ring 531 are successively larger, and the opening area of ​​the first opening 514 is smaller than the opening area of ​​the second opening 524. In this way, when the first water spray ring 511 is connected to the water spray pipe 4, the water pressure in the first water spray ring 511 will be greater than the water pressure when the second water spray ring 521 or the third water spray ring 531 is connected to the water spray pipe 4. Because the radius of the first water spray ring 511 is small, the volume is small, and the first opening 514 has a small diameter and a large water flow rate. Therefore, the water pressure sprayed by the second nozzle 512 is high, and it can be sprayed farther. With the horizontally arranged second nozzle 512, a larger range of sprinkler irrigation can be performed; secondly, the second opening 524 and the third opening 535 are located on the same vertical line, so that the timing of the connection of each opening that will be detailed in the working principle can be matched; When the first through opening 514 is in contact with the first water inlet 515 , the second through opening 524 is not in contact with the second water inlet 525 ; When the first through opening 514 is not in contact with the first water inlet 515 , the second through opening 524 is in contact with the second water inlet 525 ; When the first opening 514 is completely separated from the first water inlet 515 , the second opening 524 is about to be fitted with the second water inlet 525 , and at this time, the third opening 535 is fitted with the third water inlet 536 .

[0030] Working principle: First of all, it should be noted that Figure 6 Only the top view structure of the water spray mechanism 5 is shown, and the black area is the corresponding opening area. Since the central areas of the first water spray ring 511, the second water spray ring 521 and the third water spray ring 531 are interconnected with the water spray pipe 4, Figure 7-10 Considering the convenience of showing the details of the figure, Figure 6 The second water spray ring 521 and the third water spray ring 531 with larger radius are removed, and only a part of the first water spray ring 511 is shown. Similarly, the black area is the corresponding opening area; Initial state, see Figure 6 As shown, the first opening 514 on the first valve ring 513 is located on one side of the first water inlet 515 on the inner circle of the first water spray ring 511, and is about to be fitted with the first water inlet 515 to form a passage, while the second opening 524 on the second valve ring 523 and the third opening 535 on the third valve ring 534 located in the same vertical direction are located on one side of the second water inlet 525 on the inner circle of the second water spray ring 521, wherein the second opening 524 is about to be completely separated from the second water inlet 525 to form a closed area for the second water spray ring 521, but the third opening 535 is in the stage of fitting with the third water inlet 536 on the inner circle of the third water spray ring 531, that is, at this time, the water spray pipe 4 and the third water spray ring 531 are connected through the third opening 535 and the third water inlet 536 fit together to form a passage, at which time the water pressure in the water spray pipe 1 will be pressurized in the third water spray ring 531, and then sprayed down in the form of mist through the fourth nozzle 533 to the area directly below the nozzle, so that it can be ensured that the area directly below the nozzle can also be sprinkled; it is worth mentioning that the area of ​​the third water inlet 536 is smaller because the fourth nozzle 533 is sprinkled vertically downward, firstly, the sprinkler area is small, and secondly, no high water pressure is required. Therefore, when the rotating rod 31 rotates, only a small part of the area is overlapped by the third opening 535 and the third water inlet 536, so that the fourth nozzle 533 will not obtain a large water pressure and more sprinkler time, and can also meet the requirements of the small sprinkler area below the entire water spray mechanism 5 and no need for a large water pressure.

[0031] See next Figure 7As shown, when the rotating rod 31 rotates and drives the first valve ring 513, the second valve ring 523 and the third valve ring 534 to continue to rotate, the first valve ring 513 drives the first opening 514 to overlap with the first water inlet 515 to form a passage, and at this time, the second opening 524 and the third opening 535 are respectively overlapped with the areas without opening positions of the second water spray ring 521 and the third water spray ring 531, that is, the second opening 524 does not overlap with the area of ​​the second water inlet 525, and the third opening 535 does not overlap with the area of ​​the third water inlet 536. That is to say, at this time, only the first water spray ring 511 is connected with the water spray pipe 4 to form a passage, and the water pressure in the water spray pipe 1 is pressurized in the first water spray ring 511, and then sprayed horizontally to the surroundings through the plurality of second nozzles 512 outside the first water spray ring 511, so that the water pressure in the first water spray ring 511 is large enough, and because the radius of the first water spray ring 511 is the smallest, and the diameter of the first opening 514 is also the smallest, the water pressure in the first water spray ring 511 will be greater than the water pressure when a passage is formed in the second water spray ring 521 or the third water spray ring 531, so that the combination of the horizontally arranged second nozzles 512 allows water to be sprayed to a farther range; Then see Figure 8 As shown, when the rotating rod 31 drives the first opening 514 to rotate out of the first water inlet 515 area, that is, the first water spray ring 511 is no longer connected to the water spray pipe 4, then the second opening 524 is about to be connected to the second water inlet 525, so in the next part of the time, see Fig. 9 As shown, only the second water spray ring 521 is connected to the water spray pipe 4, and at this stage the first water spray ring 511 and the third water spray ring 531 are both in a closed state, so the water pressure in the water spray pipe 1 will be pressurized into the second water spray ring 521, and then sprayed obliquely downward to the surroundings of the water spray mechanism 5 through the third nozzle 522. Considering that the second nozzle 512 is horizontally arranged, the oblique downward spraying arrangement of the third nozzle 522 can make up for the area that is located far from the water spray mechanism 5 and cannot be sprayed by the second nozzle 512; Then, the second opening 524 is about to be completely separated from the second water inlet 525. Fig.10 As shown, at this time, the third opening 535 overlaps with the third water inlet 536, and then the first opening 514 is about to overlap with the first water inlet 515, and it returns to the initial state, and this cycle is repeated. The second nozzle 512 can be used to spray to the area farther away from the water spraying mechanism 5, and the third nozzle 522 that sprays obliquely downward can be used to spray to the area closer to the water spraying mechanism 5. At the same time, the fourth nozzle 533 that sprays vertically downward in a mist form is used to spray the area directly below the water spraying mechanism 5. In addition, the first nozzle 33 sprays vertically upward and then is broken up by the driven impeller 32 to spray around the water spraying mechanism 5. This effectively solves the problem that the nozzle pipes of the existing irrigation device cannot spray at the closer positions of the nozzles during spraying.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An energy-saving irrigation method for water conservancy projects, characterized in that: The steps include: S1. Water flows in through a water spray pipe (1), and a plurality of mounting pipes (2) are evenly arranged on the water spray pipe (1). When the water flows through the mounting pipes (2), it sprays the tank obliquely upward through an upper spray assembly (3), so that the upper spray assembly (3) generates a rotating force, and at the same time, the water sprayed upward by the upper spray assembly (3) is dispersed to the surroundings; S2, a water spray pipe (4) is provided on the water spray pipe (1) directly below the mounting pipe (2), and a water spray mechanism (5) is provided directly below the water spray pipe (4). When water flows through the water spray pipe (4), the upper spray assembly (3) rotates to control the water spray mechanism (5) to perform spray irrigation; S3. When the upper spray assembly (3) rotates, the water spray mechanism (5) sequentially performs horizontal spraying, oblique downward spraying, and vertical downward spraying in the form of mist.

2. The energy-saving irrigation method for water conservancy projects according to claim 1, characterized in that: The upper spray assembly (3) comprises a rotating rod (31), the rotating rod (31) being rotatably connected to the mounting tube (2), one end of the rotating rod (31) extending outside the mounting tube (2) and being fixedly connected to a driving impeller (32), and the other end extending to the bottom end of the water spray mechanism (5), the top of the mounting tube (2) being connected to a first spray head (33), the first spray head (33) being arranged in a spraying direction obliquely upward and facing a blade area of ​​the driving impeller (32), for driving the driving impeller (32) to rotate.

3. The energy-saving irrigation method for water conservancy projects according to claim 1, characterized in that: The water spray mechanism (5) comprises a first water spray assembly (51), the first water spray assembly (51) being fixedly connected to the bottom end of the water spray pipe (4) and being in communication with the water spray pipe (4), a second water spray assembly (52) being fixedly arranged below the first water spray assembly (51), a third water spray assembly (53) being fixedly arranged below the second water spray assembly (52), and the first water spray assembly (51), the second water spray assembly (52) and the third water spray assembly (53) being all in communication with the water spray pipe (4).

4. The energy-saving irrigation method for water conservancy projects according to claim 3 is characterized in that: The first water spray assembly (51) comprises a first water spray ring (511) fixedly connected to the bottom end of the water spray pipe (4); the inner ring of the first water spray ring (511) is connected to the water spray pipe (4); a plurality of second spray heads (512) are evenly connected to the periphery of the first water spray ring (511); the spraying direction of the second spray heads (512) is parallel to the horizontal plane; and a first water inlet (515) is provided on the inner wall of the inner ring of the first water spray ring (511).

5. The energy-saving irrigation method for water conservancy projects according to claim 4 is characterized in that: The first water spray assembly (51) further comprises a first valve ring (513), the first valve ring (513) being fixedly connected to the rotating rod (31), the first valve ring (513) being located inside the inner ring of the first water spray ring (511) and being in contact with the outer wall of the inner ring of the first water spray ring (511), and the first valve ring (513) being provided with a first opening (514), the height of the first opening (514) being adapted to the height of the first water inlet (515).

6. The energy-saving irrigation method for water conservancy projects according to claim 5, characterized in that: The second water spray assembly (52) comprises a second water spray ring (521), the inner ring of the second water spray ring (521) is connected to the water spray pipe (4), the outer periphery of the second water spray ring (521) is evenly connected to a plurality of third spray heads (522), the spraying direction of the third spray heads (522) is inclined downward, and a second water inlet (525) is provided on the inner wall of the inner ring of the second water spray ring (521).

7. The energy-saving irrigation method for water conservancy projects according to claim 6, characterized in that: The second water spray assembly (52) further comprises a second valve ring (523), the second valve ring (523) being fixedly connected to the third water spray ring (531), the second valve ring (523) being located inside the inner ring of the second water spray ring (521) and being in contact with the outer wall of the inner ring of the second water spray ring (521), and the second valve ring (523) being provided with a second opening (524), the height of the second opening (524) being adapted to the height of the second water inlet (525).

8. The energy-saving irrigation method for water conservancy projects according to claim 7, characterized in that: The third water spray assembly (53) comprises a third water spray ring (531), the third water spray ring (531) is fixedly connected to the bottom of the second water spray ring (521), the inner ring of the third water spray ring (531) is connected to the water spray pipe (4), the bottom of the third water spray ring (531) is connected to a flow pipe (532), the bottom of the flow pipe (532) is connected to a fourth nozzle (533), the spraying direction of the fourth nozzle (533) is vertically downward, and the fourth nozzle (533) sprays in a mist form; a third water inlet (536) is provided on the inner wall of the inner ring of the third water spray ring (531).

9. The energy-saving irrigation method for water conservancy projects according to claim 8, characterized in that: The third water spray assembly (53) further comprises a third valve ring (534), the third valve ring (534) being fixedly connected to the rotating rod (31), the third valve ring (534) being located within the inner ring of the third water spray ring (531) and being in contact with the outer wall of the inner ring of the third water spray ring (531), and the third valve ring (534) being provided with a third opening (535), the height of the third opening (535) being adapted to the height of the third water inlet (536).

10. The energy-saving irrigation method for water conservancy projects according to claim 9, characterized in that: The radii of the first water spray ring (511), the second water spray ring (521) and the third water spray ring (531) increase in sequence, the opening area of ​​the first opening (514) is smaller than the opening area of ​​the second opening (524), and the second opening (524) and the third opening (535) are located on the same vertical line; When the first through opening (514) is in contact with the first water inlet (515), the second through opening (524) is not in contact with the second water inlet (525); When the first through opening (514) is not in contact with the first water inlet (515), the second through opening (524) is in contact with the second water inlet (525); When the first opening (514) is completely separated from the first water inlet (515), the second opening (524) is about to be in contact with the second water inlet (525), and at this time, the third opening (535) is in contact with the third water inlet (536).

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