Plant root zone infiltrating irrigation device

Abstract

The invention belongs to the technical field of agricultural irrigation, and provides a plant root zone infiltrating irrigation device which comprises a water supply pipeline, the position, close to a water inlet, of the water supply pipeline is connected with an internally-communicated mounting ring in a sealed mode, filter screen sets distributed at intervals are arranged in the mounting ring, and flexible hoses distributed at intervals are symmetrically arranged on the water supply pipeline. A main infiltrating irrigation pipe is arranged at the other end of the flexible hose; the branch pipes are communicated with the main infiltrating irrigation pipe and are arranged in an up-down layered mode, the branch pipes are obliquely arranged downwards, the head portions of the branch pipes are provided with infiltrating irrigation heads, and anti-blocking filter screens are arranged in the infiltrating irrigation heads; through the designed anti-blocking device, the situation that the infiltrating irrigation pipe is blocked can be effectively avoided, and the effect of infiltrating irrigation on plant roots is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural irrigation, in particular to a plant root zone infiltration irrigation device. Background Art

[0002] Infiltration irrigation, also known as underground irrigation, is an irrigation method in which infiltration pipes are buried in the soil, and low-pressure water is supplied to evenly infiltrate and directly deliver water to the plant root zone. Its core advantages are:

[0003] Water-saving and efficient: Water diffuses slowly through the capillary action of the soil, reducing surface evaporation and deep seepage, and the irrigation water utilization rate is increased by 50% to 70% compared with traditional flooding.

[0004] Precision irrigation: Water acts directly on the root zone to avoid wetting the leaves and reduce the occurrence of diseases and pests. It can be combined with water-fertilizer integration technology to transport liquid fertilizer to the roots through infiltration pipes, thereby increasing the utilization rate of chemical fertilizers by 30% to 50%.

[0005] Improve the soil environment by irrigating evenly and slowly without destroying the soil structure, maintaining the coordination of water, air and heat, and promoting deep rooting. Long-term use can loosen compacted soil and achieve no-till planting.

[0006] However, during the process of burying the irrigation pipe underground, water impurities (such as silt and organic matter) may enter the pipe or silt in the soil may enter the irrigation head, which may easily cause blockage, resulting in uneven or complete interruption of water seepage, causing water shortage in some areas or damage to the root system. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides a plant root zone infiltration irrigation device to solve the problem that the infiltration irrigation pipe in the prior art is easily blocked.

[0008] A plant root zone infiltration irrigation device includes a water supply pipeline, wherein the water supply pipeline is sealed and connected to an internally interconnected mounting ring near a water inlet, wherein filter screen groups are arranged at intervals within the mounting ring, and flexible hoses are symmetrically arranged at intervals on the water supply pipeline, and a main infiltration irrigation pipe is provided at the other end of each flexible hose;

[0009] It also includes a bifurcated branch pipe, which is interconnected with the main irrigation pipe and is arranged in upper and lower layers. The bifurcated branch pipe is arranged tilted downward and an irrigation head is installed at the head. An anti-blocking filter is provided inside the irrigation head.

[0010] Preferably, a raising block is provided on the outer wall of the water supply pipeline and at the bottom position. The raising blocks are distributed at intervals on the water supply pipeline and the bottom is in contact with the ground. The inner wall of the mounting ring is provided with positioning rings distributed at intervals. The filter screen group is arranged between two adjacent positioning rings. The filter screen group adopts a sand and gravel filter screen and a mesh filter screen that are alternately distributed.

[0011] Preferably, the main irrigation pipe is made of corrosion-resistant material, and the main irrigation pipe is a hollow tube body. A mounting interface is provided on the side wall of the main irrigation pipe, and the flexible hose is plugged into the mounting interface. The outer wall of the flexible hose close to the mounting interface is provided with multiple turns of binding wire.

[0012] Preferably, the forked branch pipes are distributed in a circular shape on the upper and lower layers, and the number of branch pipes provided on each layer is not less than two. The forked branch pipes on the upper layer are located above the roots of the plants, and the forked branch pipes on the lower layer are located below the roots of the plants. The inner diameter of the forked branch pipes on the upper layer is larger than the inner diameter of the forked branch pipes on the lower layer.

[0013] Preferably, a fixedly connected mounting plate is provided on the outer wall of the bifurcated branch pipe, and an annularly distributed sealing screw is provided on the mounting plate. After the bifurcated branch pipe is inserted into the main irrigation pipe, the mounting plate and the main irrigation pipe fit together, and the sealing screw is locked into the annular wall of the main irrigation pipe. The bifurcated branch pipe is arranged to be tilted downward at 45 degrees.

[0014] Preferably, rubber sealing rings are provided at intervals on the outer wall of the bifurcated branch pipe close to the irrigation head, the inner wall of the irrigation head consists of two sections with different inner diameters, and the anti-blocking filter is installed in the small inner diameter section of the irrigation head. After the bifurcated branch pipe is inserted into the small inner diameter section, the rubber sealing ring fits the inner diameter of the irrigation head and the head of the irrigation head and the anti-blocking filter abut against each other.

[0015] Preferably, the top and bottom of the main irrigation pipe are respectively provided with an upper cover plate and a lower cover plate, and the upper cover plate and the lower cover plate are detachably connected to the main irrigation pipe by means of threads, the bottom surface of the lower cover plate is conical with the pointed cone facing downward, and the interior of the main irrigation pipe is provided with a movably connected blocking disk, the outer wall of the blocking disk is provided with a sealing ring movably fitted with the inner wall of the main irrigation pipe, and the top of the blocking disk is provided with an adjusting rod for vertical detachable connection.

[0016] Preferably, the adjusting rod is provided with positioning holes distributed vertically at intervals, and the number of the positioning holes is three. When the blocking plate is located at the bottom of the main irrigation pipe, the positioning holes in the bottom layer are located below the water inlet of the lower forked branch pipe, the positioning holes in the middle layer are located between the upper and lower forked branch pipes, and the positioning holes in the top layer are located above the upper cover plate. Fixedly connected limiting strips are symmetrically provided on the outer wall of the adjusting rod, and guide blocks that cooperate with the limiting strips are symmetrically provided on the inner wall of the main irrigation pipe.

[0017] Preferably, a vertical plate is provided at the bottom of the upper cover plate, a movably connected plug rod is provided on the vertical plate, a return spring is sleeved on the plug rod, and the return spring drives the plug rod to pass through the positioning hole of the uppermost layer, and an outlet pipe is provided on the main irrigation pipe and above the forked branch pipe on the upper layer, and a switch valve is provided on the outlet pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a water supply pipeline with a mounting ring near the water inlet, and a filter group is provided in the mounting ring, so that the water is first filtered by the filter group during the water transportation process to intercept impurities in the water, thereby preventing impurities from adhering to the inner wall of the water supply pipeline for a long time and causing blockage;

[0020] In addition, a bifurcated branch pipe is designed on the main infiltration irrigation pipe, and the bifurcated branch pipe is arranged at an angle downward, which is not only conducive to the water in the bifurcated branch pipe to flow out from the infiltration irrigation head, thereby improving the infiltration irrigation efficiency, but also an anti-blocking filter is installed between the infiltration irrigation head and the bifurcated branch pipe to prevent soil or impurities from entering the bifurcated branch pipe, further improving the anti-blocking effect and ensuring the infiltration irrigation efficiency for plants.

[0021] 2. The present invention designs the bifurcated branch pipes into two layers, with the number of bifurcated branch pipes in the upper layer being no less than two, so that infiltration irrigation can be carried out downward from multiple reverse directions, which makes it easier for the plant roots to absorb water and improves the uniformity of infiltration irrigation. Moreover, the bifurcated branch pipes in the upper layer are designed above the plant roots. After the water comes out of the infiltration irrigation head, the water gradually penetrates downward to form a moist area, which can be better absorbed by the plant roots. The area below the plant roots is a dry area. The bifurcated branch pipes in the lower layer are designed below the plant roots, so that water gradually moistens the dry area, which is more conducive to the downward extension of the plant roots. This not only achieves the effect of infiltration irrigation, but also is more conducive to plant development. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the plant root zone infiltration irrigation device of the present invention;

[0023] Figure 2 This is a cross-sectional view of the internal structure of the water supply pipeline and the mounting ring of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the main irrigation pipe and bifurcated branch pipes of the present invention;

[0025] Figure 4 This is a cross-sectional view of the structure of the irrigation head and bifurcated branch pipe components of the present invention;

[0026] Figure 5 This is a cross-sectional view of the internal structure of the main irrigation pipe of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the components such as the adjusting rod and the upper cover plate of the present invention.

[0028] In the picture:

[0029] 1. Water supply pipeline; 2. Mounting ring; 3. Filter assembly; 4. Flexible hose; 5. Main infiltration irrigation pipe; 6. Branch pipe; 7. Infiltration head; 8. Anti-blocking filter; 9. Heightening block; 10. Positioning ring; 11. Mounting interface; 12. Binding wire; 13. Mounting plate; 14. Sealing screw; 15. Rubber sealing ring; 16. Upper cover; 17. Lower cover; 18. Blocking plate; 19. Sealing ring; 20. Adjusting rod; 21. Positioning hole; 22. Limiting strip; 23. Guide block; 24. Vertical plate; 25. Connecting rod; 26. Return spring; 27. Outlet pipe; 28. Switch valve. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] As attached Figure 1 To the attached Figure 6 As shown:

[0034] Example 1: The present invention provides a plant root zone infiltration irrigation device, including a water supply pipeline 1, the water supply pipeline 1 is sealed and connected to an internally interconnected mounting ring 2 near the water inlet, and the mounting ring 2 is provided with a filter group 3 distributed at intervals inside. Flexible hoses 4 are symmetrically provided at intervals on the water supply pipeline 1, and the other end of the flexible hose 4 is provided with a main infiltration irrigation pipe 5;

[0035] The bifurcated branch pipe 6 is interconnected with the main irrigation pipe 5 and is arranged in upper and lower layers. The bifurcated branch pipe 6 is arranged downwardly and an irrigation head 7 is installed at the head. An anti-blocking filter screen 8 is provided inside the irrigation head 7.

[0036] It should be noted that, through the water supply pipe 1, a mounting ring 2 is provided near the water inlet of the water supply pipe 1, and a filter group 3 is provided in the mounting ring 2, so that the water is first filtered by the filter group 3 during the water transportation process to intercept impurities in the water, thereby preventing the impurities from adhering to the inner wall of the water supply pipe 1 for a long time and causing blockage;

[0037] In addition, a bifurcated branch pipe 6 is designed on the main infiltration irrigation pipe 5, and the bifurcated branch pipe 6 is arranged to be inclined downward, which is not only conducive to the water in the bifurcated branch pipe 6 to flow out from the infiltration irrigation head 7, thereby improving the infiltration irrigation efficiency, but also an anti-blocking filter 8 is installed between the infiltration irrigation head 7 and the bifurcated branch pipe 6, which can prevent soil or impurities from entering the bifurcated branch pipe 6, further improving the anti-blocking effect and ensuring the infiltration irrigation efficiency of the plants.

[0038] In this embodiment, a raising block 9 is provided on the outer wall of the water supply pipe 1 and at the bottom position. The raising blocks 9 are distributed at intervals on the water supply pipe 1 and the bottom is in contact with the ground. The inner wall of the mounting ring 2 is provided with positioning rings 10 distributed at intervals. The filter group 3 is arranged between two adjacent positioning rings 10. The filter group 3 adopts a sand and gravel filter and a mesh filter that are alternately distributed.

[0039] It should be noted that by arranging a raising block 9 on the bottom wall of the water supply pipe 1, the raising block 9 can lift the water supply pipe 1 during the infiltration irrigation process to prevent the water supply pipe 1 from being placed directly on the ground. The positioning ring 10 is fixed in the mounting ring 2, and the filter group 3 adopts an alternating distribution of sand and gravel filters and mesh filters to intercept and filter impurities in the water, thereby preventing them from entering the main infiltration irrigation pipe 5 and the branch pipe 6, ensuring the continuous and stable operation of the infiltration irrigation system.

[0040] In this embodiment, the main irrigation pipe 5 is made of a corrosion-resistant material. The main irrigation pipe 5 is a hollow tube body. A mounting interface 11 is provided on the side wall of the main irrigation pipe 5. The flexible hose 4 is plugged into the mounting interface 11. The outer wall of the end of the flexible hose 4 close to the mounting interface 11 is provided with multiple turns of binding wire 12.

[0041] It should be noted that by designing the main irrigation pipe 5 to be made of corrosion-resistant material, the service life of the main irrigation pipe 5 is improved, and a mutual mounting interface 11 is provided on the outer wall of the main irrigation pipe 5. The flexible hose 4 is plugged into the mounting interface 11 and fixed by binding the iron wire 12, so that it is designed to be detachable, which facilitates the later separation of the main irrigation pipe 5 and its cleaning.

[0042] In this embodiment, the bifurcated branch pipes 6 are distributed in a circular shape on the upper and lower layers, and the number of bifurcated branch pipes 6 set on each layer is not less than two. The bifurcated branch pipes 6 on the upper layer are located above the roots of the plants, and the bifurcated branch pipes 6 on the lower layer are located below the roots of the plants. The inner diameter of the bifurcated branch pipes 6 on the upper layer is larger than the inner diameter of the bifurcated branch pipes 6 on the lower layer.

[0043] It should be noted that the bifurcated branch pipes 6 are designed to be in two layers, with no less than two bifurcated branch pipes 6 in the upper layer, so that infiltration irrigation can be carried out downward from multiple reverse directions, which makes it easier for the plant roots to absorb water and improves the uniformity of infiltration irrigation. Moreover, the bifurcated branch pipes 6 in the upper layer are designed to be above the plant roots. After the water comes out of the infiltration irrigation head 7, the water gradually penetrates downward to form a moist area, which can be better absorbed by the plant roots. The area below the plant roots is a dry area. The bifurcated branch pipes 6 in the lower layer are designed to be below the plant roots, so that water gradually moistens the dry area, which is more conducive to the downward extension of the plant roots, thereby not only achieving the effect of infiltration irrigation, but also being more conducive to plant development.

[0044] In this embodiment, a fixedly connected mounting plate 13 is provided on the outer wall of the bifurcated branch pipe 6, and a ring-shaped sealing screw 14 is provided on the mounting plate 13. After the bifurcated branch pipe 6 is inserted into the main irrigation pipe 5, the mounting plate 13 and the main irrigation pipe 5 fit together, and the sealing screw 14 is locked into the annular wall of the main irrigation pipe 5. The bifurcated branch pipe 6 is set to be tilted downward at 45 degrees.

[0045] It should be noted that the inner diameter of the upper bifurcated branch pipe 6 is larger than that of the lower bifurcated branch pipe 6, so that the amount of water flowing out of the upper infiltration irrigation head 7 is greater than that of the lower infiltration irrigation head 7, first ensuring absorption by the plant roots. The length of the lower bifurcated branch pipe 6 is greater than that of the upper bifurcated branch pipe 6, thereby increasing the moistening area of ​​the soil below the plant roots and facilitating better root growth.

[0046] A mounting plate 13 is provided on the bifurcated branch pipe 6, and a sealing screw 14 is provided on the mounting plate 13. The bifurcated branch pipe 6 and the main irrigation pipe 5 are designed to be detachable, which is convenient for disassembly. After disassembly, the main irrigation pipe 5 and the bifurcated branch pipe 6 can be cleaned separately.

[0047] In this embodiment, rubber sealing rings 15 are provided on the outer wall of the bifurcated branch pipe 6 on the side close to the irrigation head 7. The inner wall of the irrigation head 7 is composed of two sections with different inner diameters. The anti-blocking filter 8 is installed in the small inner diameter section of the irrigation head 7. After the bifurcated branch pipe 6 is inserted into the small inner diameter section, the rubber sealing ring 15 fits the inner diameter of the irrigation head 7 and the head of the irrigation head 7 and the anti-blocking filter 8 abut against each other.

[0048] It should be noted that the interior of the irrigation head 7 is composed of two sections with different inner diameters, so that when the anti-blocking filter 8 is inserted from the large inner diameter section at the tail of the irrigation head 7, it will eventually fit together with the small inner diameter section and abut against each other, which is convenient for the installation of the anti-blocking filter 8. The outer wall of the bifurcated branch pipe 6 is fixedly connected with rubber sealing rings 15 distributed at intervals. The irrigation head 7 is connected to the bifurcated branch pipe 6 by plugging. When the plugging is completed, the rubber sealing ring 15 is located between the two, which ensures the sealing between the two and facilitates the cleaning of the anti-blocking filter 8 in the irrigation head 7 after disassembly.

[0049] In this embodiment, the top and bottom of the main irrigation pipe 5 are respectively provided with an upper cover plate 16 and a lower cover plate 17, the upper cover plate 16 and the lower cover plate 17 are detachably connected to the main irrigation pipe 5 by means of threads, the bottom surface of the lower cover plate 17 is conical and the tip of the cone faces downward, the interior of the main irrigation pipe 5 is provided with a movable blocking disk 18, the outer wall of the blocking disk 18 is provided with a sealing ring 19 that is movably fitted with the inner wall of the main irrigation pipe 5, and the top of the blocking disk 18 is provided with an adjusting rod 20 for vertical disassembly connection.

[0050] It should be noted that a detachable upper cover plate 16 and a lower cover plate 17 are designed at the top and bottom of the main irrigation pipe 5. After disassembly, it is convenient to flush and clean the inside of the main irrigation pipe 5. The bottom surface of the lower cover plate 17 is designed to be conical, so that the main irrigation pipe 5 is conveniently placed under the ground. If the main irrigation pipe 5 needs to be installed, a hole can be dug at a suitable location next to the plant, and then the main irrigation pipe 5 and the bifurcated branch pipe 6 are buried in the hole.

[0051] A blocking disk 18 is provided inside the main infiltration irrigation pipe 5. A detachable adjusting rod 20 is designed on the top of the blocking disk 18. The top of the adjusting rod 20 passes through the upper cover plate 16. When the adjusting rod 20 is pulled, the adjusting rod 20 will drive the blocking disk 18 to move. When it moves above the forked branch pipe 6 of the lower layer, after water enters the main infiltration irrigation pipe 5, it is blocked by the blocking disk 18 and will not flow out from the forked branch pipe 6 below. All water will flow out from the infiltration irrigation head 7 of the upper layer. When the roots of plants are in a state of water shortage, their roots can be concentratedly irrigated. After the blocking disk 18 rises again and exceeds the forked branch pipe 6 of the upper layer, the roots of plants will no longer be irrigated. If it is necessary to clean the inside of the water supply pipe 1, the cleaning agent will be transported into the water supply pipe 1 to flush it, which can prevent the cleaning agent from flowing into the soil through the infiltration irrigation head 7.

[0052] In this embodiment, the adjusting rod 20 is provided with positioning holes 21 distributed vertically at intervals, and the number of the positioning holes 21 is three. When the blocking plate 18 is located at the bottom of the main seepage irrigation pipe 5, the positioning holes 21 of the bottom layer are located below the water inlet of the lower bifurcated branch pipe 6, the positioning holes 21 of the middle layer are located between the upper and lower bifurcated branch pipes 6, and the positioning holes 21 of the top layer are located above the upper cover plate 16. The outer wall of the adjusting rod 20 is symmetrically provided with fixedly connected limit strips 22, and the inner wall of the main seepage irrigation pipe 5 is symmetrically provided with guide blocks 23 that cooperate with the limit strips 22.

[0053] It should be noted that, by providing a limiting strip 22 on the outer wall of the adjusting rod 20 , the limiting strip 22 cooperates with the guide block 23 , thereby ensuring the stability of the movement of the adjusting rod 20 .

[0054] In this embodiment, a vertical plate 24 is provided at the bottom of the upper cover plate 16, and a movably connected plug rod 25 is provided on the vertical plate 24. A return spring 26 is sleeved on the plug rod 25, and the return spring 26 drives the plug rod 25 to pass through the uppermost positioning hole 21. An outlet pipe 27 is provided on the main irrigation pipe 5 and above the upper bifurcated branch pipe 6, and a switch valve 28 is provided on the outlet pipe 27.

[0055] It should be noted that positioning holes 21 of different heights are provided on the adjusting rod 20. After the adjusting rod 20 drives the blocking disk 18 to move to a suitable position, the plug-in rod 25 is released. Under the action of the return spring 26, the plug-in rod 25 is driven to move forward, thereby entering the positioning hole 21 and fixing the blocking disk 18 at a suitable height.

[0056] An outlet pipe 27 is provided on the main infiltration irrigation pipe 5. When the blocking disk 18 is located above the bifurcated branch pipe 6 on the upper layer, the switch valve 28 on the outlet pipe 27 can be opened during the cleaning process of the inside of the water supply pipeline 1 using a cleaning liquid, so that the cleaning liquid can flow out of the outlet pipe 27 after entering the main infiltration irrigation pipe 5. The water supply pipeline 1 can be cleaned quickly and conveniently without disassembling the entire device.

[0057] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A plant root zone infiltration irrigation device, characterized in that: include: A water supply pipeline (1) is provided with an internally interconnected mounting ring (2) in a sealed connection near a water inlet, a filter mesh group (3) is provided inside the mounting ring (2), flexible hoses (4) are symmetrically provided on the water supply pipeline (1), and a main infiltration irrigation pipe (5) is provided at the other end of the flexible hose (4); The invention also comprises a bifurcated branch pipe (6), the bifurcated branch pipe (6) is interconnected with the main irrigation pipe (5) and is arranged in upper and lower layers. The bifurcated branch pipe (6) is arranged tilted downward and an irrigation head (7) is installed at the head. An anti-blocking filter (8) is provided inside the irrigation head (7).

2. The plant root zone infiltration irrigation device according to claim 1, characterized in that: A padding block (9) is provided on the outer wall of the water supply pipe (1) and at the bottom thereof. The padding blocks (9) are spaced apart on the water supply pipe (1) and the bottom thereof is in contact with the ground. Positioning rings (10) are spaced apart on the inner wall of the mounting ring (2). The filter screen group (3) is arranged between two adjacent positioning rings (10). The filter screen group (3) adopts a sand and gravel filter screen and a mesh filter screen that are alternately distributed.

3. The plant root zone infiltration irrigation device according to claim 1, characterized in that: The main irrigation pipe (5) is a component made of corrosion-resistant material. The main irrigation pipe (5) is a hollow pipe body. A mounting interface (11) is provided on the side wall of the main irrigation pipe (5). The flexible hose (4) is plugged into the mounting interface (11). A plurality of winding binding wires (12) are provided on the outer wall of one end of the flexible hose (4) close to the mounting interface (11).

4. The plant root zone infiltration irrigation device according to claim 1, characterized in that: The bifurcated branch pipes (6) are distributed in an annular manner on the upper and lower layers, and the number of bifurcated branch pipes (6) provided on each layer is not less than two. The bifurcated branch pipes (6) on the upper layer are located above the plant roots, and the bifurcated branch pipes (6) on the lower layer are located below the plant roots. The inner diameter of the bifurcated branch pipes (6) on the upper layer is larger than the inner diameter of the bifurcated branch pipes (6) on the lower layer.

5. The plant root zone infiltration irrigation device according to claim 4, characterized in that: A fixedly connected mounting plate (13) is provided on the outer wall of the bifurcated branch pipe (6), and an annularly distributed sealing screw (14) is provided on the mounting plate (13). After the bifurcated branch pipe (6) is inserted into the main infiltration irrigation pipe (5), the mounting plate (13) and the main infiltration irrigation pipe (5) are fitted with each other, and the sealing screw (14) is locked into the annular wall of the main infiltration irrigation pipe (5). The bifurcated branch pipe (6) is arranged to be tilted downward at 45 degrees.

6. The plant root zone infiltration irrigation device according to claim 5, characterized in that: The outer wall of the bifurcated branch pipe (6) close to the irrigation head (7) is provided with spaced apart rubber sealing rings (15); the inner wall of the irrigation head (7) is composed of two sections with different inner diameters; the anti-blocking filter (8) is installed in the small inner diameter section of the irrigation head (7); after the bifurcated branch pipe (6) is inserted into the small inner diameter section, the rubber sealing ring (15) and the inner diameter of the irrigation head (7) are fitted to each other, and the head of the irrigation head (7) and the anti-blocking filter (8) are in contact with each other.

7. The plant root zone infiltration irrigation device according to claim 1, characterized in that: The top and bottom of the main irrigation pipe (5) are respectively provided with an upper cover plate (16) and a lower cover plate (17), and the upper cover plate (16) and the lower cover plate (17) are detachably connected to the main irrigation pipe (5) by means of threads. The bottom surface of the lower cover plate (17) is conical with the tip facing downward. A movably connected blocking disk (18) is provided inside the main irrigation pipe (5), and the outer wall of the blocking disk (18) is provided with a sealing ring (19) movably fitted with the inner wall of the main irrigation pipe (5). The top of the blocking disk (18) is provided with an adjusting rod (20) for vertical detachable connection.

8. The plant root zone infiltration irrigation device according to claim 7, characterized in that: The regulating rod (20) is provided with positioning holes (21) distributed at intervals in a vertical direction. The number of the positioning holes (21) is three. When the blocking plate (18) is located at the bottom of the main seepage irrigation pipe (5), the positioning holes (21) at the bottom layer are located below the water inlet of the lower layer of the bifurcated branch pipe (6), the positioning holes (21) at the middle layer are located between the upper and lower layers of the bifurcated branch pipe (6), and the positioning holes (21) at the top layer are located above the upper cover plate (16). The outer wall of the regulating rod (20) is symmetrically provided with fixedly connected limiting strips (22), and the inner wall of the main seepage irrigation pipe (5) is symmetrically provided with guide blocks (23) that cooperate with the limiting strips (22).

9. The plant root zone infiltration irrigation device according to claim 8, characterized in that: A vertical plate (24) is provided at the bottom of the upper cover plate (16), a movably connected plug rod (25) is provided on the vertical plate (24), a return spring (26) is sleeved on the plug rod (25), and the return spring (26) drives the plug rod (25) to pass through the positioning hole (21) of the uppermost layer. A water outlet pipe (27) is provided on the main infiltration irrigation pipe (5) and above the bifurcated branch pipe (6) of the upper layer, and a switch valve (28) is provided on the water outlet pipe (27).

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