Automatic backwash sprinkling system for gardens

CN224875640UActive Publication Date: 2026-10-23BINMAI WATER SUPPLY EQUIP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522321128.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-10-23
Estimated Expiration
2035-10-31

AI Technical Summary

Benefits of technology

[0005]本申请与现有技术相比,具有以下优点,进水管道、过滤装置、第一输水管道、储水器、第二输水管道以及多级出水管道呈U字形布置,使得整体结构紧凑,便于小型化,且能够通过水泵抽吸储水器中的水经过第二输水管道以及反冲洗管对过滤装置进行反冲洗,增加使用寿命。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224875640U_ABST
    Figure CN224875640U_ABST
Patent Text Reader

Abstract

The utility model provides a kind of automatic backwash sprinkling irrigation system of gardens, including inlet conduit, filter device, first water conduit, water reservoir, water pump, second water conduit, backwash conduit and multistage outlet conduit;Water pump is arranged in water reservoir;Inlet conduit, filter device, first water conduit, water reservoir, second water conduit and multistage outlet conduit are sequentially connected, and backwash conduit is connected with second water conduit and filter device respectively;Inlet conduit, filter device, first water conduit, water reservoir, second water conduit and multistage outlet conduit are arranged in U shape;The structure of the application is compact, convenient for miniaturization, and can backwash, increase service life.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of garden irrigation technology, and more specifically, to an automatic backwashing sprinkler irrigation system for gardens. Background Technology

[0002] Garden irrigation is a technical measure to supplement the soil moisture needed for the growth of garden plants, thereby improving their growing conditions. With the popularization of automation, irrigation equipment occupies most gardens. However, most irrigation equipment occupies a large area. For example, a single central-shaft sprinkler can span hundreds of meters, requiring a central location in the farmland to install the support tower. Its tire tracks crush surrounding crops, resulting in the actual occupied area far exceeding the irrigation range. Large irrigation equipment cannot be flexibly deployed in small gardens and has poor terrain adaptability. On the other hand, existing irrigation equipment directly uses reclaimed water, which contains a large amount of particulate matter or suspended solids, leading to algae and silt blockages. In severe cases, this can cause the equipment to be scrapped, while in milder cases, it requires regular disassembly and cleaning by professionals, which is cumbersome. Many farmers lack the knowledge of equipment maintenance, leading to the eventual scrapping of their equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic backwashing sprinkler irrigation system for gardens, which has a compact structure, is easy to miniaturize, and can backwash, thus increasing its service life.

[0004] This utility model provides an automatic backwashing sprinkler irrigation system for gardens, including an inlet pipe, a filter device, a first water supply pipe, a water storage tank, a water pump, a second water supply pipe, a backwashing pipe, and a multi-stage outlet pipe; the water pump is installed inside the water storage tank; the inlet pipe, filter device, first water supply pipe, water storage tank, second water supply pipe, and multi-stage outlet pipe are connected in sequence, and the backwashing pipe is connected to the second water supply pipe and the filter device respectively; the inlet pipe, filter device, first water supply pipe, water storage tank, second water supply pipe, and multi-stage outlet pipe are arranged in a U-shape.

[0005] Compared with the prior art, this application has the following advantages: the water inlet pipe, the filter device, the first water supply pipe, the water storage tank, the second water supply pipe, and the multi-stage water outlet pipe are arranged in a U-shape, which makes the overall structure compact and easy to miniaturize. Moreover, the water in the water storage tank can be drawn by the water pump and backwashed through the second water supply pipe and the backwash pipe to backwash the filter device, thereby increasing its service life.

[0006] In one possible implementation, the filtration device includes a first filter, a second filter, and a filtered water supply pipe; a first end of the first filter is connected to the outlet end of the inlet pipe; a second end of the first filter is connected to the inlet end of the filtered water supply pipe; a first end of the second filter is connected to the outlet end of the filtered water supply pipe; and a second end of the second filter is connected to the inlet end of the first water supply pipe.

[0007] Compared with existing technologies, the above-mentioned technical solution can filter water sources through two-stage filtration, removing suspended solids of different particle sizes, which facilitates irrigation.

[0008] In one possible implementation, the system also includes a pressure regulator and a pressure regulating pipeline; the pressure regulator is disposed between the water storage tank and the multi-stage water outlet pipeline; the inlet end of the pressure regulating pipeline is connected to the pressure regulator, and the outlet end of the pressure regulating pipeline is connected to the second water supply pipeline.

[0009] Compared with existing technologies, the voltage stabilizer using the above technical solution can dynamically adapt to changes in flow and pressure, ensuring system stability; eliminate water hammer, reduce vibration, and extend equipment life; and the position of the water tank and voltage stabilizer is conducive to the overall U-shaped arrangement, which is conducive to miniaturization and a more compact structure.

[0010] In one possible implementation, the backwashing pipeline includes a first backwashing pipeline and a second backwashing pipeline; the inlet ends of both the first and second backwashing pipelines are connected to the second water supply pipeline, the outlet end of the first backwashing pipeline is connected to the third end of the first filter, and the outlet end of the second backwashing pipeline is connected to the third end of the second filter.

[0011] Compared with existing technologies, the above technical solution can effectively backwash the first and second filters by drawing water from the water storage tank through the second water supply pipe, the first backwash pipe, and the second backwash pipe, thereby increasing their service life.

[0012] In one possible implementation, it further includes a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve; the first solenoid valve is connected in the water flow direction of the inlet pipe to allow or stop water flow; the second solenoid valve is connected in the water flow direction of the first water delivery pipe to allow or stop water flow; the third solenoid valve is connected in the water flow direction of the first backwash pipe to allow or stop water flow; and the fourth solenoid valve is connected in the water flow direction of the second backwash pipe to allow or stop water flow.

[0013] Compared with the existing technology, the above technical solution can close the first and second solenoid valves and open the third and fourth solenoid valves during backwashing, so that the water pump draws water from the water storage tank and backwashes the first and second filters through the second water supply pipe, the first backwash pipe and the second backwash pipe; during irrigation, the first and second solenoid valves are opened and the third and fourth solenoid valves are closed, so that the water pump draws water from the multi-stage outlet pipe for irrigation.

[0014] In one possible implementation, the multi-stage water outlet pipeline includes a first water outlet pipeline, a second water outlet pipeline, and a third water outlet pipeline arranged sequentially from top to bottom at intervals; the inlet end of the second water supply pipeline is connected to the water storage tank; the inlet ends of the first water outlet pipeline, the second water outlet pipeline, and the third water outlet pipeline are all connected to the outlet end of the second water supply pipeline; the outlet ends of the first water outlet pipeline, the second water outlet pipeline, and the third water outlet pipeline are all arranged to the right along with the inlet end of the inlet pipeline.

[0015] Compared with existing technologies, the first, second, and third water outlet pipes using the above-mentioned technical solution can meet the irrigation needs of most small gardens, such as scattering in lawn areas, micro-spraying in shrub areas, and drip irrigation in flower areas, and can also meet the needs of terraced gardens; the other end and the inlet end of the water inlet pipe are both set to the right, which can help to form a U-shaped structure, which is compact and does not occupy extra space in the base.

[0016] In one possible implementation, a fifth solenoid valve, a sixth solenoid valve, and a seventh solenoid valve are also included; the fifth solenoid valve is connected in the direction of water flow in the first outlet pipe to allow or stop water flow; the sixth solenoid valve is connected in the direction of water flow in the second outlet pipe to allow or stop water flow; and the seventh solenoid valve is connected in the direction of water flow in the third outlet pipe to allow or stop water flow.

[0017] Compared with existing technologies, the above-mentioned technical solution is conducive to timed irrigation and human control, making irrigation more intelligent. In addition, during backwashing, the fifth, sixth and seventh solenoid valves are closed, allowing the backwash water flow to directly enter the backwashing pipe for flushing.

[0018] In one possible implementation, the system also includes a base; the inlet pipe, filter device, first water supply pipe, water tank, water pump, second water supply pipe, backwash pipe, multi-stage outlet pipe, pressure stabilizer, and pressure stabilizing pipeline are all fixed to the upper surface of the base.

[0019] Compared with existing technologies, the above-mentioned technical solution has a compact structure integrated on the base, which is conducive to miniaturization. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present application;

[0021] Figure 2 This is a schematic diagram of the pipeline connection in this application;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Inlet pipe, 2-Filter device, 3-First water supply pipe, 4-Water storage tank, 5-Water pump, 6-Second water supply pipe, 7-Backwash pipe, 8-Multi-stage outlet pipe, 9-Pressure stabilizer, 10-Base, 11-First solenoid valve, 21-First filter, 22-Second filter, 23-Filtered water supply pipe, 31-Second solenoid valve, 71-First backwash pipe, 72-Second backwash pipe, 81-First outlet pipe, 82-Second outlet pipe, 83-Third outlet pipe, 91-Pressure stabilizing pipeline, 711-Third solenoid valve, 721-Fourth solenoid valve, 811-Fifth solenoid valve, 821-Sixth solenoid valve, 831-Seventh solenoid valve. Detailed Implementation

[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] This embodiment discloses an automatic backwashing sprinkler irrigation system for gardens, including an inlet pipe 1, a filter device 2, a first water supply pipe 3, a water storage tank 4, a water pump 5, a second water supply pipe 6, a backwashing pipe 7, and a multi-stage outlet pipe 8; the water pump 5 is installed inside the water storage tank 4; the inlet pipe 1, filter device 2, first water supply pipe 3, water storage tank 4, second water supply pipe 6, and multi-stage outlet pipe 8 are connected sequentially, and the backwashing pipe 7 is connected to both the second water supply pipe 6 and the filter device 2; the inlet pipe 1, filter device 2, first water supply pipe 3, water storage tank 4, second water supply pipe 6, and multi-stage outlet pipe 8 are arranged in a U-shape. The filter device 2 includes a first filter 21, a second filter 22, and a filtered water supply pipe 23; the first end of the first filter 21 is connected to the outlet end of the inlet pipe 1; the second end of the first filter 21 is connected to the inlet end of the filtered water supply pipe 23; the first end of the second filter 22 is connected to the outlet end of the filtered water supply pipe 23; and the second end of the second filter 22 is connected to the inlet end of the first water supply pipe 3. It also includes a pressure stabilizer 9 and a pressure stabilizing pipeline 91; the pressure stabilizer 9 is located between the water storage tank 4 and the multi-stage water outlet pipeline 8; the inlet end of the pressure stabilizing pipeline 91 is connected to the pressure stabilizer 9, and the outlet end of the pressure stabilizing pipeline 91 is connected to the second water supply pipeline 6. The backwash pipeline 7 includes a first backwash pipeline 71 and a second backwash pipeline 72; the inlet ends of both the first backwash pipeline 71 and the second backwash pipeline 72 are connected to the second water supply pipeline 6, the outlet end of the first backwash pipeline 71 is connected to the third end of the first filter 21, and the outlet end of the second backwash pipeline 72 is connected to the third end of the second filter 22. The multi-stage water outlet pipe 8 includes a first water outlet pipe 81, a second water outlet pipe 82, and a third water outlet pipe 83 arranged sequentially from top to bottom; the inlet end of the second water supply pipe 6 is connected to the water storage tank 4; the inlet ends of the first water outlet pipe 81, the second water outlet pipe 82, and the third water outlet pipe 83 are all connected to the outlet end of the second water supply pipe 6; the outlet ends of the first water outlet pipe 81, the second water outlet pipe 82, and the third water outlet pipe 83 are all arranged to the right of the inlet end of the inlet pipe 1. It also includes a base 10; the inlet pipe 1, the filter device 2, the first water supply pipe 3, the water storage tank 4, the water pump 5, the second water supply pipe 6, the backwash pipe 7, the multi-stage water outlet pipe 8, the pressure stabilizer 9, and the pressure stabilizing pipeline 91 are all fixed on the upper surface of the base 10.

[0029] Specifically, in this embodiment, the base 10 can be fixed in an area around a water source, such as a riverbank; as shown in the attached diagram. Figure 1 As shown, the inlet pipe 1 has a "Z"-shaped structure and is vertically positioned on the upper right side of the upper surface of the base 10. Both the first filter 21 and the second filter 22 are three-port structures. The lower inlet end of the inlet pipe 1, facing right, is used to connect to an external water source. The upper outlet end is connected to the first end of the first filter 21. The outlet end of the first water supply pipe 3 is connected to the inlet end of the water storage tank 4, and the outlet end of the water storage tank 4 is connected to the inlet end of the second water supply pipe 6. (See attached diagram) Figure 1As shown, the inlet pipe 1, filter device 2, first water supply pipe 3, water storage tank 4, second water supply pipe 6, and multi-stage outlet pipe 8 are arranged in a U-shape on the upper surface of the base 10, with the U-shaped opening facing right. Additionally, since the pressure regulator 9 is located between the water storage tank 4 and the multi-stage outlet pipe 8, the entire assembly remains in a U-shape on the upper surface of the base 10. Through the two-stage filtration of the first filter 21 and the second filter 22, the water source is thoroughly filtered, removing suspended solids of different particle sizes, facilitating irrigation. The pressure regulator 9 can dynamically adapt to changes in flow and pressure, ensuring system stability; eliminating water hammer, reducing vibration, and extending equipment life. The first outlet pipe 81, second outlet pipe 82, and third outlet pipe 83 can meet the irrigation needs of most small gardens, such as diffused irrigation in lawn areas, micro-sprinkler irrigation in shrub areas, and drip irrigation in flower areas. It can also accommodate terraced gardens, with a compact structure that does not occupy additional space on the base.

[0030] When irrigation is needed, the water pump 5 is activated to generate water flow power. The water flows sequentially through the inlet pipe 1, the first filter 21, the filtered water supply pipe 23, the second filter 22, the first water supply pipe 3, the water storage tank 4, and the second water supply pipe 6, and then flows out through the first outlet pipe 81, the second outlet pipe 82, and the third outlet pipe 83 for irrigation. When backwashing is needed, the water pump 5 is activated to generate water flow power, directly drawing water from the water storage tank 4. Part of the water flows sequentially through the second water supply pipe 6, the first backwash pipe 71, and the second backwash pipe 72 to backwash the first filter 21 and the second filter 22. Wastewater can be discharged through additional outlet holes at the lower ends of the first filter 21 and the second filter 22. In this embodiment, the space utilization of the base 10 is maximized, which is conducive to miniaturization, a more compact structure, and the ability to perform backwashing.

[0031] As attached Figure 2 As shown, in some embodiments, a first solenoid valve 11, a second solenoid valve 31, a third solenoid valve 711, and a fourth solenoid valve 721 are also included; the first solenoid valve 11 is connected in the water flow direction of the inlet pipe 1 to allow or stop water flow; the second solenoid valve 31 is connected in the water flow direction of the first water supply pipe 3 to allow or stop water flow; the third solenoid valve 711 is connected in the water flow direction of the first backwash pipe 71 to allow or stop water flow; and the fourth solenoid valve 721 is connected in the water flow direction of the second backwash pipe 72 to allow or stop water flow.

[0032] Specifically, in this embodiment, when irrigation is needed, the water pump 5 is started to generate water flow power, and the first solenoid valve 11 and the second solenoid valve 31 are opened simultaneously, while the third solenoid valve 711 and the fourth solenoid valve 721 are closed. The water flow will sequentially pass through the inlet pipe 1, the first filter 21, the filtered water supply pipe 23, the second filter 22, the first water supply pipe 3, the water storage tank 4, and the second water supply pipe 6, and then flow out through the first outlet pipe 81, the second outlet pipe 82, and the third outlet pipe 83 for irrigation. When backwashing is needed, the first solenoid valve 11 and the second solenoid valve 31 are closed simultaneously, the third solenoid valve 711 and the fourth solenoid valve 721 are opened, and the water pump 5 is started to generate water flow power, directly drawing water from the water storage tank 4. Part of the water flow will sequentially pass through the second water supply pipe 6, the first backwash pipe 71, and the second backwash pipe 72 to backwash the first filter 21 and the second filter 22. Wastewater can be discharged through additional outlet holes at the lower ends of the first filter 21 and the second filter 22.

[0033] As attached Figure 2 As shown, in some embodiments, a fifth solenoid valve 811, a sixth solenoid valve 821, and a seventh solenoid valve 831 are also included; the fifth solenoid valve 811 is connected in the water flow direction of the first water outlet pipe 81 to allow or stop water flow; the sixth solenoid valve 821 is connected in the water flow direction of the second water outlet pipe 82 to allow or stop water flow; and the seventh solenoid valve 831 is connected in the water flow direction of the third water outlet pipe 83 to allow or stop water flow.

[0034] Specifically, in this embodiment, when irrigation is required, the water pump 5 is started to generate water flow power, and the first solenoid valve 11, the second solenoid valve 31, the fifth solenoid valve 811, the sixth solenoid valve 821 and the seventh solenoid valve 831 are opened at the same time, while the third solenoid valve 711 and the fourth solenoid valve 721 are closed. The water will flow through the inlet pipe 1, the first filter 21, the filtered water supply pipe 23, the second filter 22, the first water supply pipe 3, the water storage tank 4 and the second water supply pipe 6 in sequence, and then flow out through the first outlet pipe 81, the second outlet pipe 82 and the third outlet pipe 83 for irrigation. When backwashing is required, the first solenoid valve 11, the second solenoid valve 31, the fifth solenoid valve 811, the sixth solenoid valve 821, and the seventh solenoid valve 831 are closed simultaneously, while the third solenoid valve 711 and the fourth solenoid valve 721 are opened. The water pump 5 is started to generate water flow power and directly draw water from the water storage tank 4. All the water flow is used for backwashing. The water flow passes through the second water supply pipe 6, the first backwash pipe 71, and the second backwash pipe 72 in sequence to backwash the first filter 21 and the second filter 22. Wastewater can be discharged through additional outlet holes at the lower end of the first filter 21 and the second filter 22.

[0035] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0036] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automatic backwashing sprinkler irrigation system for gardens, characterized in that, It includes an inlet pipe (1), a filter device (2), a first water supply pipe (3), a water storage tank (4), a water pump (5), a second water supply pipe (6), a backwash pipe (7), and a multi-stage outlet pipe (8); the water pump (5) is installed in the water storage tank (4); the inlet pipe (1), the filter device (2), the first water supply pipe (3), the water storage tank (4), the second water supply pipe (6), and the multi-stage outlet pipe (8) are connected in sequence, and the backwash pipe (7) is connected to the second water supply pipe (6) and the filter device (2) respectively; the inlet pipe (1), the filter device (2), the first water supply pipe (3), the water storage tank (4), the second water supply pipe (6), and the multi-stage outlet pipe (8) are arranged in a U-shape.

2. The automatic backwashing sprinkler irrigation system for gardens according to claim 1, characterized in that, The filtration device (2) includes a first filter (21), a second filter (22), and a filtration water supply pipe (23); the first end of the first filter (21) is connected to the outlet end of the water inlet pipe (1); the second end of the first filter (21) is connected to the inlet end of the filtration water supply pipe (23); the first end of the second filter (22) is connected to the outlet end of the filtration water supply pipe (23); and the second end of the second filter (22) is connected to the inlet end of the first water supply pipe (3).

3. The automatic backwashing sprinkler irrigation system for gardens according to claim 2, characterized in that, It also includes a pressure regulator (9) and a pressure regulating pipeline (91); the pressure regulator (9) is located between the water storage tank (4) and the multi-stage water outlet pipeline (8); the inlet end of the pressure regulating pipeline (91) is connected to the pressure regulator (9), and the outlet end of the pressure regulating pipeline (91) is connected to the second water supply pipeline (6).

4. The automatic backwashing sprinkler irrigation system for gardens according to claim 3, characterized in that, The backwash pipe (7) includes a first backwash pipe (71) and a second backwash pipe (72); the inlet ends of the first backwash pipe (71) and the second backwash pipe (72) are both connected to the second water supply pipe (6), the outlet end of the first backwash pipe (71) is connected to the third end of the first filter (21), and the outlet end of the second backwash pipe (72) is connected to the third end of the second filter (22).

5. The automatic backwashing sprinkler irrigation system for gardens according to claim 4, characterized in that, It also includes a first solenoid valve (11), a second solenoid valve (31), a third solenoid valve (711), and a fourth solenoid valve (721); the first solenoid valve (11) is connected in the direction of water flow in the inlet pipe (1) to allow or stop water flow; the second solenoid valve (31) is connected in the direction of water flow in the first water supply pipe (3) to allow or stop water flow; the third solenoid valve (711) is connected in the direction of water flow in the first backwash pipe (71) to allow or stop water flow; and the fourth solenoid valve (721) is connected in the direction of water flow in the second backwash pipe (72) to allow or stop water flow.

6. The automatic backwashing sprinkler irrigation system for gardens according to claim 1, 2, 3, 4 or 5, characterized in that, The multi-stage water outlet pipe (8) includes a first water outlet pipe (81), a second water outlet pipe (82), and a third water outlet pipe (83) arranged sequentially from top to bottom; the inlet end of the second water supply pipe (6) is connected to the water storage device (4); the inlet ends of the first water outlet pipe (81), the second water outlet pipe (82), and the third water outlet pipe (83) are all connected to the outlet end of the second water supply pipe (6); the outlet ends of the first water outlet pipe (81), the second water outlet pipe (82), and the third water outlet pipe (83) are all arranged to the right along with the inlet end of the water inlet pipe (1).

7. The automatic backwashing sprinkler irrigation system for gardens according to claim 6, characterized in that, It also includes a fifth solenoid valve (811), a sixth solenoid valve (821), and a seventh solenoid valve (831); the fifth solenoid valve (811) is connected to the first outlet pipe (81) in the direction of water flow to allow or stop water flow; the sixth solenoid valve (821) is connected to the second outlet pipe (82) in the direction of water flow to allow or stop water flow; and the seventh solenoid valve (831) is connected to the third outlet pipe (83) in the direction of water flow to allow or stop water flow.

8. The automatic backwashing sprinkler irrigation system for gardens according to claim 3, 4, or 5, characterized in that, It also includes a base (10); the water inlet pipe (1), filter device (2), first water supply pipe (3), water storage tank (4), water pump (5), second water supply pipe (6), backwash pipe (7), multi-stage water outlet pipe (8), pressure stabilizer (9) and pressure stabilizing pipeline (91) are all fixed on the upper surface of the base (10).