Garden water-saving sprinkling irrigation device and sprinkling irrigation method thereof

Abstract

The invention relates to the technical field of garden sprinkling irrigation devices, in particular to a garden water-saving sprinkling irrigation device and a sprinkling irrigation method thereof.The garden water-saving sprinkling irrigation device comprises a vehicle body, a water storage tank is fixed to the vehicle body, a support is fixed to the water storage tank, a water pump is fixedly installed on the support, a water inlet pipe extending into the water storage tank is fixed to a water inlet of the water pump, and a water outlet pipe is fixed to a water outlet of the water pump; a nozzle seat is rotatably mounted on the support, nozzles communicated with a water outlet pipe are fixedly mounted at the bottom of the nozzle seat, the water outlet pipe is communicated with the multiple nozzles, a valve body is fixedly mounted on a passage of the water outlet pipe, and a valve element is slidably arranged in the valve body; by effectively combining the characteristics of rotary spraying and pulse spraying, on the premise that a complex control system and extra supercharging equipment are not needed, the irrigation uniformity is remarkably improved, and the irrigation efficiency is improved. Water evaporation and drifting loss are reduced, and the purpose of efficiently saving water is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sprinkling irrigation devices, in particular to a garden water-saving sprinkling irrigation device and a sprinkling irrigation method thereof. BACKGROUND

[0002] Garden irrigation is an important link to maintain urban ecology and landscape, with the increasing shortage of water resources, developing efficient water-saving irrigation technology has become an inevitable trend in the industry, at present, the common garden sprinkling irrigation methods mainly include fixed sprinkling irrigation, rotary sprinkling irrigation and the like.

[0003] Although the fixed sprinkling irrigation has a simple structure, the spraying range is fixed, the water droplet size is small, and in the open environment, it is easy to drift due to wind force, and the unit area irrigation time is long, the surface evaporation loss is large, and the water resource utilization efficiency is not high, the rotary sprinkling irrigation expands the coverage range of single point spraying by water flow backflushing or mechanical driving to rotate the sprinkler head, and improves the uniformity to a certain extent, however, the water spraying is still continuous, when the marginal area coverage is met, the center area often has the problem of excessive water supply, and the water injection pressure is usually directly derived from the pipe network of the water supply system, and the ability to resist wind disturbance and evaporation is limited.

[0004] Therefore, how to design an irrigation device capable of synchronously realizing rotation of the sprinkler head and pulse injection of the water flow, so as to significantly improve the water-saving rate and wind resistance while expanding the coverage area, has become a technical problem to be solved in the current garden water-saving irrigation field, and therefore, the present application provides a garden water-saving sprinkling irrigation device and a sprinkling irrigation method thereof to solve the above-mentioned problems. SUMMARY

[0005] The present application aims to provide a garden water-saving sprinkling irrigation device and a sprinkling irrigation method thereof, which adopts an intermittent rotary sprinkling irrigation mode, can reduce the water output in unit time, and cooperates with the better soil permeability of the water droplets formed by the pulse, so as to effectively reduce the surface runoff and deep seepage, and the comprehensive water-saving effect is obvious, so as to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A garden water-saving sprinkling irrigation device, comprising a vehicle body, a water storage tank is fixed on the vehicle body, a support is fixed on the water storage tank, a water pump is fixedly installed on the support, a water inlet of the water pump is fixed with a water inlet pipe extending into the water storage tank, a water outlet is fixed with a water outlet pipe, a sprinkler head seat is rotatably installed on the support, a sprinkler head is fixedly installed at the bottom of the sprinkler head seat and communicated with the water outlet pipe, the water outlet pipe is communicated with a plurality of sprinkler heads, a valve body is fixedly installed on the passage of the water outlet pipe, and a valve core is slidably arranged in the valve body; The main shaft is rotatably installed on the support and connected with the water pump impeller, and the main shaft is cooperated with the nozzle holder through a first linkage mechanism. The main shaft is cooperated with the valve core through a second linkage mechanism, and the main shaft drives the valve core to slide up and down in the valve body when rotating.

[0007] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0008] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0009] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0010] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0011] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0012] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0013] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0014] The garden water-saving sprinkling irrigation device comprises a support, a motor fixedly installed on the support, a main shaft connected with the output end of the motor through a shaft coupling to drive the main shaft to rotate.

[0015] The garden water-saving sprinkling method of any one of the garden water-saving sprinkling devices comprises the following steps, S1, driving the rotation of the main shaft connected with the impeller of the water pump, starting the water pump to pump water from the water storage tank, and then flowing into the water pump through the water inlet pipe and then flowing to the water outlet pipe; S2, the rotation of the main shaft is converted into the rotary motion of the nozzle seat through the first linkage mechanism, so that the plurality of nozzles fixed on the bottom of the nozzle seat rotate at a constant speed, and uniform spraying coverage in the circumferential direction is realized; S3, the rotation of the main shaft is converted into the periodic reciprocating sliding of the valve core through the second linkage mechanism, the main shaft drives the rotation of the linkage shaft through the first worm gear mechanism, the linkage shaft drives the rotation of the cam shaft through the second worm gear mechanism, the cam on the cam shaft rotates and periodically presses the pressing block connected with the valve core, so that the valve core slides downward in the valve body to close the water path of the water outlet pipe; when the protruding part of the cam leaves the pressing block, the reset spring pushes the pressing block and the valve core to reset upward to open the water path of the water outlet pipe; S4, the continuous water flow in the water outlet pipe is modulated into high-pressure pulse water flow sprayed from the nozzle through the periodic opening and closing of the valve core in step S3, and the intermittent pulse water spraying mode is combined with the nozzle in step S2, and wide-area, high-pressure, intermittent water-saving sprinkling under low-pressure water supply condition is realized.

[0016] Compared with the prior art, the beneficial effects of the present application are: The present application converts the continuous rotation of the main shaft into the periodic rapid opening and closing of the valve core through the second linkage mechanism, so that the continuous water flow through the water outlet pipe is modulated into intermittent high-pressure pulse water flow sprayed from the nozzle, and the pulse jet has higher initial kinetic energy, which can effectively resist wind interference and reduce the drift and evaporation loss of water droplets in the air. At the same time, the first linkage mechanism drives the nozzle seat to rotate at a constant speed, ensuring that the high-pressure pulse water can uniformly cover the entire circumferential area, solving the problem of over-wetting in the central area of the traditional continuous water flow and insufficient spraying at the edge, and significantly improving the irrigation uniformity and water resource utilization rate while expanding the coverage range; In addition, the present application uses a motor as the only power source, and drives the rotation of the nozzle seat and the reciprocating motion of the valve core through the first linkage mechanism and the second linkage mechanism respectively, discarding the complex structure of the traditional scheme which needs to configure independent motors or electromagnetic valves for rotation and pulse action respectively, realizing the integration and miniaturization of the device, significantly reducing the manufacturing cost, energy consumption and failure rate, and the power transmission and action control of the entire device completely depend on mechanical components such as gears, worm gears, cams, etc. without the need for complex electronic sensors or controllers, which has strong environmental adaptability, stable and reliable operation, and easy maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a garden water-saving sprinkling device.

[0018] Figure 2 A garden water-saving type sprinkling irrigation device Figure 1 Partial exploded structure diagram.

[0019] Figure 3 A garden water-saving type sprinkling irrigation device Figure 2 Structure diagram of another view.

[0020] Figure 4 A garden water-saving type sprinkling irrigation device Figure 2 Partial exploded structure diagram.

[0021] Figure 5 A garden water-saving type sprinkling irrigation device Figure 4 Partial exploded structure diagram.

[0022] Figure 6 A garden water-saving type sprinkling irrigation device Figure 5 Partial exploded structure diagram.

[0023] Figure 7 A garden water-saving type sprinkling irrigation device Figure 5 Partial exploded structure diagram.

[0024] Figure 8 A garden water-saving type sprinkling irrigation device Figure 7 Structure diagram of A in the enlarged view.

[0025] Figure 9 A garden water-saving type sprinkling irrigation device Figure 6 Partial exploded structure diagram.

[0026] Figure 10 A garden water-saving type sprinkling irrigation device Figure 9 Partial exploded structure diagram.

[0027] In the figure: 1, vehicle body; 2, water storage tank; 3, support; 4, water pump; 5, water inlet pipe; 6, water outlet pipe; 7, nozzle seat; 8, nozzle; 9, valve body; 10, valve core; 11, main shaft; 12, motor; 13, linkage shaft; 14, first worm; 15, first worm wheel; 16, rotating shaft; 17, driving gear; 18, driven gear; 19, camshaft; 20, second worm; 21, second worm wheel; 22, guide seat; 23, ejector rod; 24, pressing block; 25, return spring; 26, cam; 27, drain valve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0029] Please see Figures 1-10 As an embodiment of the present invention, a garden water-saving sprinkler irrigation device includes a vehicle body 1, a water storage tank 2 fixed on the vehicle body 1, a bracket 3 fixed on the water storage tank 2, a water pump 4 fixedly installed on the bracket 3, an inlet pipe 5 extending into the water storage tank 2 fixed at the inlet of the water pump 4, an outlet pipe 6 fixed at the outlet, a nozzle seat 7 rotatably installed on the bracket 3, a nozzle 8 communicating with the outlet pipe 6 fixedly installed at the bottom of the nozzle seat 7, the outlet pipe 6 communicating with multiple nozzles 8, a valve body 9 fixedly installed in the passage of the outlet pipe 6, and a valve core 10 slidably disposed inside the valve body 9; A main shaft 11 connected to the impeller of the water pump 4 is rotatably mounted on the bracket 3. The main shaft 11 and the nozzle seat 7 are connected by a first linkage mechanism. When the main shaft 11 rotates, it will drive the nozzle seat 7 to rotate. The main shaft 11 and the valve core 10 are connected by a second linkage mechanism. When the main shaft 11 rotates, it drives the valve core 10 to slide up and down inside the valve body 9.

[0030] In this embodiment, the main shaft 11, which is connected to the impeller of the water pump 4, is driven to rotate, starting the water pump 4. Water is drawn from the water storage tank 2 through the inlet pipe 5 and flows out through the outlet pipe 6, finally being delivered to the nozzle 8 for spraying. The rotation of the main shaft 11 is transmitted through the first linkage mechanism, ultimately driving the nozzle seat 7 to rotate, thereby causing the nozzle 8 fixed at its bottom to perform circular motion, achieving rotational spraying. At the same time, the rotation of the same main shaft 11 is transmitted through the second linkage mechanism, which is converted into the valve core 10 sliding regularly up and down in the valve body 9. When the valve core 10 slides to the closed position, the water flow is cut off, and the outlet pipe 6 is pressurized at the same time. When the valve core 10 slides to the open position, the pressurized water in the outlet pipe 6 can pass through and flow to the nozzle 8. Therefore, this device, through the power input of the main shaft 11, simultaneously realizes the rotational coverage of the nozzle 8 and the intermittent pulse spraying of the water flow. This working mode combines the uniformity of rotational spraying with the high kinetic energy and low drift characteristics of pulse spraying, thereby achieving the purpose of efficient and water-saving irrigation.

[0031] As a further embodiment of the present invention, a motor 12 is fixedly mounted on the bracket 3, and the output end of the motor 12 is connected to the main shaft 11 through a coupling to drive the main shaft 11 to rotate.

[0032] In this embodiment, the motor 12 is electrically connected to an external power source via wires, and the motor 12 provides independent, stable and controllable rotational power to the main shaft 11.

[0033] As a further embodiment of the present invention, the number of nozzles 8 is set to multiple, and the multiple nozzles 8 are distributed circumferentially at equal angles at the bottom of the nozzle holder 7.

[0034] In this embodiment, multiple equally angled nozzles 8 can achieve a larger and denser spray coverage during each rotation of the nozzle seat 7, effectively improving the uniformity and efficiency of single-point irrigation.

[0035] As a further embodiment of the present invention, the first linkage mechanism includes a linkage shaft 13 and a rotating shaft 16 rotatably mounted on the bracket 3. The linkage shaft 13 is connected to the main shaft 11 through a first worm gear mechanism. When the main shaft 11 rotates, it drives the linkage shaft 13 to rotate. The linkage shaft 13 and the rotating shaft 16 are connected through a first gear mechanism. When the linkage shaft 13 rotates, it drives the rotating shaft 16 to rotate. The nozzle seat 7 is fixedly mounted on the rotating shaft 16.

[0036] In this embodiment, the first linkage mechanism transmits and converts the high-speed rotation of the main shaft 11 into a lower speed and a larger torque suitable for the rotation of the nozzle seat 7. The first worm gear mechanism realizes the change of power transmission direction and initial deceleration. The subsequent first gear mechanism can further decelerate and amplify the torque, thereby ensuring that the nozzle seat 7 and the nozzle 8 can rotate smoothly and at a uniform speed.

[0037] As a further embodiment of the present invention, the first worm gear mechanism includes a first worm 14 fixed on the main shaft 11 and a first worm wheel 15 fixed on the linkage shaft 13, wherein the first worm 14 meshes with the first worm wheel 15.

[0038] In this embodiment, the meshing of the first worm 14 and the first worm wheel 15 forms a reliable and self-locking speed reduction transmission pair. It can not only effectively reduce the rotational speed, but its self-locking characteristic can also prevent the nozzle seat 7 from reversing due to external forces such as wind when there is no power input, thus ensuring the stability of the irrigation angle.

[0039] As a further embodiment of the present invention, the first gear mechanism includes a driving gear 17 fixed on the linkage shaft 13 and a driven gear 18 fixed on the rotation shaft 16, wherein the driving gear 17 meshes with the driven gear 18.

[0040] In this embodiment, the meshing of the driving gear 17 and the driven gear 18 constitutes a two-stage reduction transmission. By selecting an appropriate gear ratio, the final rotation speed of the rotating shaft 16 and the nozzle seat 7 can be precisely controlled to adapt to the requirements of different irrigation scenarios on the spraying cycle.

[0041] As a further embodiment of the present invention, the second linkage mechanism includes a camshaft 19 rotatably mounted on the bracket 3. The camshaft 19 and the linkage shaft 13 are connected by a second worm gear mechanism. When the linkage shaft 13 rotates, it drives the camshaft 19 to rotate. A guide seat 22 is fixed on the valve body 9. A push rod 23 is provided through the guide seat 22. One end of the push rod 23 is fixed to the valve core 10, and the other end is fixedly connected to a pressure block 24. A return spring 25 is sleeved on the push rod 23. One end of the return spring 25 is fixed to the guide seat 22, and the other end is fixed to the pressure block 24.

[0042] In this embodiment, the second linkage mechanism draws power from the linkage shaft 13 again and drives the camshaft 19 to rotate through the second worm gear mechanism. The cam 26 mounted on the camshaft 19 rotates accordingly. When the protrusion of the cam 26 pushes the pressure block 24, it overcomes the elastic force of the return spring 25 and pushes the valve core 10 down through the push rod 23, closing the water passage of the valve body 9. When the protrusion of the cam 26 rotates away, the elastic force of the return spring 25 pushes the push rod 23 and the valve core 10 to quickly return to their original position, opening the water passage of the valve body 9. This cycle converts the continuous rotational motion into the periodic reciprocating linear motion of the valve core 10, realizing pulse control of the water flow.

[0043] As a further embodiment of the present invention, the second worm gear mechanism includes a second worm 20 fixed on the linkage shaft 13 and a second worm wheel 21 fixed on the camshaft 19, wherein the second worm 20 meshes with the second worm wheel 21.

[0044] In this embodiment, the second worm gear mechanism transmits and converts the rotational power of the linkage shaft 13 into the rotation of the camshaft 19, and provides the camshaft 19 with a precise and stable low-speed input. This ensures the stability of the opening and closing frequency of the valve core 10, thereby obtaining a well-regular pulsed water flow.

[0045] As a further embodiment of the present invention, a drain valve 27 for discharging water from the inside of the water storage tank 2 is fixedly installed on the water storage tank 2.

[0046] In this embodiment, the drain valve 27 is designed to facilitate the quick and thorough emptying of the water in the water storage tank 2 and its connected pipelines when the device needs maintenance, is idle for a long period of time, or is in the cold season to prevent freezing damage, which helps to extend the service life of the device.

[0047] The working principle of this invention is as follows: the starter motor 12 drives the main shaft 11 to start rotating. The rotation of the main shaft 11 drives the impeller of the water pump 4 to rotate, thereby starting the water pump 4. Water flows from the water storage tank 2 through the inlet pipe 5 and is drawn by the water pump 4 into the outlet pipe 6. The rotational power of the main shaft 11 is transmitted in two ways: one way is through the first linkage mechanism composed of the first worm gear mechanism and the first gear mechanism, which drives the rotating shaft 16 and the nozzle seat 7 to rotate slowly and uniformly after two stages of reduction, so as to achieve spray coverage; the other way is split off from the linkage shaft 13 and drives the camshaft 19 to rotate through the second worm gear mechanism. The cam 26 on the camshaft 19 periodically pushes the push rod 23, overcoming the elastic force of the return spring 25 to move the valve core 10 down to close the water passage. Then, under the action of the return spring 25, it quickly returns to the original position and opens the water passage, thus forming a periodic pressurization and depressurization process in the outlet pipe 6, modulating the continuous water flow into a high-pressure pulse water flow, which is then sprayed out through the rotating nozzle 8. This device achieves rotational spraying and pulse jetting simultaneously through a single power input and mechanical linkage. While ensuring irrigation uniformity, it enhances the kinetic energy of water droplets, reduces drift and evaporation losses, and achieves a significant water-saving effect.

[0048] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A water-saving sprinkler irrigation device for gardens, comprising a vehicle body (1), characterized in that, A water tank (2) is fixed on the vehicle body (1), a bracket (3) is fixed on the water tank (2), a water pump (4) is fixed on the bracket (3), an inlet pipe (5) extending into the water tank (2) is fixed at the inlet of the water pump (4), an outlet pipe (6) is fixed at the outlet, a nozzle seat (7) is rotatably mounted on the bracket (3), a nozzle (8) communicating with the outlet pipe (6) is fixedly mounted at the bottom of the nozzle seat (7), the outlet pipe (6) is connected to multiple nozzles (8), a valve body (9) is fixedly mounted on the passage of the outlet pipe (6), and a valve core (10) is slidably arranged inside the valve body (9). The bracket (3) is rotatably mounted with a main shaft (11) connected to the impeller of the water pump (4). The main shaft (11) and the nozzle seat (7) are connected by a first linkage mechanism. When the main shaft (11) rotates, it will drive the nozzle seat (7) to rotate. The main shaft (11) and the valve core (10) are connected by a second linkage mechanism. When the main shaft (11) rotates, it will drive the valve core (10) to slide up and down inside the valve body (9).

2. The garden water-saving sprinkler irrigation device according to claim 1, characterized in that, A motor (12) is fixedly installed on the bracket (3). The output end of the motor (12) is connected to the main shaft (11) through a coupling to drive the main shaft (11) to rotate.

3. A garden water-saving sprinkler irrigation device according to claim 1, characterized in that, The number of nozzles (8) is set to multiple, and the multiple nozzles (8) are distributed circumferentially at equal angles at the bottom of the nozzle seat (7).

4. A garden water-saving sprinkler irrigation device according to claim 1, characterized in that, The first linkage mechanism includes a linkage shaft (13) and a rotating shaft (16) rotatably mounted on the bracket (3). The linkage shaft (13) is connected to the main shaft (11) through a first worm gear mechanism. When the main shaft (11) rotates, it drives the linkage shaft (13) to rotate. The linkage shaft (13) and the rotating shaft (16) are connected through a first gear mechanism. When the linkage shaft (13) rotates, it drives the rotating shaft (16) to rotate. The nozzle seat (7) is fixedly mounted on the rotating shaft (16).

5. A garden water-saving sprinkler irrigation device according to claim 4, characterized in that, The first worm gear mechanism includes a first worm (14) fixed on the main shaft (11) and a first worm wheel (15) fixed on the linkage shaft (13), wherein the first worm (14) meshes with the first worm wheel (15).

6. A garden water-saving sprinkler irrigation device according to claim 4, characterized in that, The first gear mechanism includes a driving gear (17) fixed on the linkage shaft (13) and a driven gear (18) fixed on the rotation shaft (16), wherein the driving gear (17) meshes with the driven gear (18).

7. A garden water-saving sprinkler irrigation device according to claim 4, characterized in that, The second linkage mechanism includes a camshaft (19) rotatably mounted on a bracket (3). The camshaft (19) and the linkage shaft (13) are connected by a second worm gear mechanism. When the linkage shaft (13) rotates, it will drive the camshaft (19) to rotate. A guide seat (22) is fixed on the valve body (9). A push rod (23) is provided through the guide seat (22). One end of the push rod (23) is fixed to the valve core (10), and the other end is fixedly connected to a pressure block (24). A return spring (25) is sleeved on the push rod (23). One end of the return spring (25) is fixed to the guide seat (22), and the other end is fixed to the pressure block (24).

8. A garden water-saving sprinkler irrigation device according to claim 7, characterized in that, The second worm gear mechanism includes a second worm (20) fixed on the linkage shaft (13) and a second worm wheel (21) fixed on the camshaft (19), wherein the second worm (20) meshes with the second worm wheel (21).

9. A garden water-saving sprinkler irrigation device according to claim 1, characterized in that, A drain valve (27) for discharging water from the inside of the water storage tank (2) is fixedly installed on the water storage tank (2).

10. A sprinkler irrigation method for a garden water-saving sprinkler irrigation device as described in any one of claims 1-9, characterized in that, Includes the following steps, S1, drive the main shaft (11) connected to the impeller of the water pump (4) to rotate, the water pump (4) starts to draw water from the water storage tank (2), the water flows through the inlet pipe (5) into the water pump (4), and then flows to the outlet pipe (6). S2, the rotation of the main shaft (11) is converted into the rotation of the nozzle seat (7) through the first linkage mechanism, so that the multiple nozzles (8) fixed at the bottom of the nozzle seat (7) rotate at a constant speed to achieve uniform spraying coverage in the circumferential direction. S3, the rotation of the main shaft (11) is converted into the periodic reciprocating sliding of the valve core (10) through the second linkage mechanism. The main shaft (11) drives the linkage shaft (13) to rotate through the first worm gear mechanism. The linkage shaft (13) drives the cam shaft (19) to rotate through the second worm gear mechanism. The cam (26) on the cam shaft (19) rotates and periodically presses down the pressure block (24) connected to the valve core (10), so that the valve core (10) slides down in the valve body (9) to close the water passage of the outlet pipe (6). When the protruding part of the cam (26) leaves the pressure block (24), the return spring (25) pushes the pressure block (24) and the valve core (10) to return to the top, opening the water passage of the outlet pipe (6). S4, through the periodic opening and closing of the valve core (10) in step S3, the continuous water flow in the outlet pipe (6) is modulated into a high-pressure pulse water flow sprayed from the nozzle (8). This intermittent pulse water spraying mode is combined with the nozzle (8) in step S2 to achieve wide-area, high-pressure, intermittent water-saving irrigation under low-pressure water supply conditions.

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