Hexagonal conjugate double-circulation labyrinth type drip irrigation tape

Abstract

The utility model discloses a hexagonal conjugate double-circulation labyrinth drip irrigation tape which is characterized in that two flow channels are symmetrically arranged on the outer side of a drip irrigation tape body, each flow channel is composed of a first branch pipe, a second branch pipe, a third branch pipe, a hexagonal branch pipe, a fourth branch pipe, a fifth branch pipe and a sixth branch pipe which are communicated in sequence, and the included angle between specific branch pipes is smaller than 90 degrees. And two sides of the two hexagonal branch pipes are communicated. According to the design, flow velocity distribution can be optimized, impurity deposition can be reduced, reverse flushing and flow distribution balancing can be achieved through the middle communication structure, and water flow can automatically bypass when local blockage occurs. The device is mainly used for agricultural irrigation and can effectively improve the irrigation effect, reduce blockage of a drip irrigation belt and guarantee stable operation of an irrigation system.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment technology. More specifically, this utility model relates to a hexagonal conjugate double-flow labyrinth drip irrigation tape. Background Technology

[0002] In the field of modern agricultural irrigation, drip irrigation technology has become an important direction for agricultural irrigation development due to its advantages of high efficiency, water saving, and precise irrigation. As a key component of the drip irrigation system, the performance of drip tape directly affects the irrigation effect. However, existing drip tapes have many problems in practical applications, seriously restricting the promotion and effectiveness of drip irrigation technology. Drip tape lacks effective self-regulation capabilities when dealing with localized blockages. Once a blockage occurs in a section of the channel, the flow rate and pressure of the entire drip irrigation system will be affected, making it difficult to maintain a stable irrigation state. If the blockage is not detected and cleared in time, it may lead to insufficient irrigation in some areas, or even paralysis of the entire drip irrigation system. In the past, simple measures such as widening or changing the shape of the drip tape channels to solve these problems have caused new problems. For example, while widening the channel can reduce the chance of blockage, it reduces the water flow velocity, further aggravating the problem of uneven flow velocity and resulting in even worse irrigation effects.

[0003] Existing drip irrigation tapes have significant shortcomings in terms of clogging, flow velocity distribution, and self-regulation capabilities. These problems urgently need to be addressed to improve the overall performance of drip irrigation technology and meet the needs of modern agriculture for efficient and stable irrigation. Utility Model Content

[0004] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0005] Another objective of this invention is to provide a hexagonal conjugate double-flow labyrinth drip irrigation tape, which optimizes the flow velocity distribution of water within the drip irrigation tape through the flow channel angle design and hexagonal branch pipe connection structure, avoiding the formation of low-speed "dead zones" and reducing the occurrence of impurity deposition and blockage of the flow channels.

[0006] To achieve these objectives and other advantages of this utility model, a hexagonal conjugate double-flow labyrinth drip irrigation tape is provided, comprising:

[0007] The drip irrigation tape itself;

[0008] Two flow channels are connected to the drip irrigation tape body and are symmetrically arranged. Each flow channel includes two first branch pipes connected to the drip irrigation tape body, a second branch pipe connected to the end of the first branch pipe, a third branch pipe connected to the end of the second branch pipe, and a hexagonal branch pipe connected to the end of the third branch pipe. Two sides of the two hexagonal branch pipes are connected. The outlet end of the hexagonal branch pipe is connected to a fourth branch pipe. The end of the fourth branch pipe is connected to a fifth branch pipe. The end of the fifth branch pipe is connected to a sixth branch pipe. The angles between the second branch pipe and the first branch pipe, the second branch pipe and the third branch pipe, the fourth branch pipe and the fifth branch pipe, and the fifth branch pipe and the sixth branch pipe are all less than 90°.

[0009] Preferably, it further includes: an inlet pipe connected to the drip irrigation tape body, the end of the inlet pipe being connected to a seventh branch pipe, the end of the seventh branch pipe being connected to the first branch pipe, wherein the included angle between the inlet pipe and the seventh branch pipe and the included angle between the seventh branch pipe and the first branch pipe are both less than 90°.

[0010] Preferably, the end of the sixth branch pipe is connected to an eighth branch pipe, and the end of the eighth branch pipe is connected to a water outlet pipe. The angle between the sixth branch pipe and the eighth branch pipe, and the angle between the eighth branch pipe and the water outlet pipe are both less than 90°.

[0011] Preferably, the hexagonal branch pipe includes two branch pipes connected to the end of the third branch pipe. The end of one branch pipe is connected to a flow pipe, and the end of the flow pipe is connected to a first branch pipe. The ends of the remaining two branch pipes in the two hexagonal branch pipes are connected to a manifold. The end of the manifold is connected to two second branch pipes. In the same hexagonal branch pipe, the ends of the first branch pipe and the second branch pipe are both connected to the fourth branch pipe, and the branch pipe, the manifold, the flow pipe, the first branch pipe, and the second branch pipe together form a hexagon. The ratio of the diameter of the manifold to the diameter of the flow pipe is 2:1.

[0012] Preferably, in each hexagonal branch pipe, the length ratio of the flow pipe to the branch pipe, the first branch pipe, and the second branch pipe is 7:4, wherein the length of the manifold is equal to the length of the flow pipe.

[0013] Preferably, in the two flow channels, the two first branch pipes are connected by multiple first through holes, and the two sixth branch pipes are connected by multiple second through holes.

[0014] Preferably, the lengths of the inlet pipe, the first branch pipe, the third branch pipe, the fourth branch pipe, the sixth branch pipe, and the outlet pipe are all equal to the length of the flow pipe.

[0015] Preferably, the diameters of the inlet pipe, the seventh branch pipe, the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe, the fifth branch pipe, the sixth branch pipe, the eighth branch pipe, and the outlet pipe are all equal to the diameter of the flow pipe.

[0016] Preferably, the ratio of the distance h between the first branch pipe and the third branch pipe to the diameter of the flow pipe is 1.4:1.

[0017] Preferably, the angle between the water inlet pipe and the seventh branch pipe, and the angle between the seventh branch pipe and the first branch pipe are both 45° to 60°.

[0018] The angle between the sixth branch pipe and the eighth branch pipe, and the angle between the eighth branch pipe and the outlet pipe are both 45° to 60°.

[0019] Preferably, the manifold is provided with a spiral guide vane, the ratio of the pitch of the spiral guide vane to the diameter of the manifold is 1:4, and the inclination angle of the spiral guide vane is 18-20°.

[0020] Multiple hemispherical turbulence protrusions are spaced apart inside the flow tube. The ratio of the distance between any two adjacent turbulence protrusions to the diameter of the flow tube is 1:1.7, and the ratio of the height of the turbulence protrusions to the diameter of the flow tube is 1:8.

[0021] This utility model has at least the following beneficial effects:

[0022] This invention's channel angle design and hexagonal branch pipe connection structure optimize the flow velocity distribution within the drip irrigation tape, avoiding the formation of low-velocity "dead zones" and reducing the occurrence of impurity deposition and channel blockage. The symmetrically arranged channels ensure continuous irrigation even when one channel experiences partial blockage, allowing the other channel to maintain a partial water supply. The opposing flows on both sides create a shear layer and intersecting vortices in the central connecting zone (where the two hexagonal branch pipes intersect). When pressure drop increases on one side due to particle accumulation, the central connecting zone guides some fluid to flow in the opposite direction, creating a "self-flushing" effect. The vortices at the backwater corners on both sides converge in the central area (vortex synergy), forming secondary flows (such as spiral flows), enhancing wall shear force and inhibiting sediment adhesion.

[0023] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the flow channel structure according to one of the technical solutions of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the edge-conjugate double-flow labyrinth drip irrigation tape described in one of the technical solutions of this utility model. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] like Figure 1 and Figure 2 As shown, this utility model provides a hexagonal conjugate double-flow labyrinth drip irrigation tape, comprising:

[0028] The drip irrigation tape body 14 is the basic structure of the entire drip irrigation tape.

[0029] Two flow channels are connected to the drip irrigation tape body 14 and are symmetrically arranged. Each flow channel includes two first branch pipes 3 connected to the drip irrigation tape body 14, a second branch pipe 4 connected to the end of the first branch pipe 3, a third branch pipe 5 connected to the end of the second branch pipe 4, and a hexagonal branch pipe 6 connected to the end of the third branch pipe 5. Two sides of the two hexagonal branch pipes 6 are connected. The outlet end of the hexagonal branch pipe 6 is connected to a fourth branch pipe 7. The end of the fourth branch pipe 7 is connected to a fifth branch pipe 8. The end of the fifth branch pipe 8 is connected to a sixth branch pipe 9. The angles between the second branch pipe 4 and the first branch pipe 3, the second branch pipe 4 and the third branch pipe 5, the fourth branch pipe 7 and the fifth branch pipe 8, and the fifth branch pipe 8 and the sixth branch pipe 9 are all less than 90°.

[0030] In this technical solution, two flow channels are inserted on the outer side of the drip irrigation tape body 14. In each flow channel, the first branch pipe 3 serves as the initial entry point for water flow and connects to the drip irrigation tape body 14, providing initial guidance for subsequent water flow. The second branch pipe 4 connects to the end of the first branch pipe 3, and the angle between the second and third branch pipes is less than 90°. This causes a change in the speed and direction of the water flow when passing through this connection point, creating a certain turbulence effect, preventing the water flow from concentrating on one side, helping to disperse impurities, and reducing the risk of clogging. The third branch pipe 5 connects to the end of the second branch pipe 4, and the angle between the second and third branch pipes is less than 90°, further altering the water flow state. Hexagonal branch pipe 6 is connected to the third branch pipe 5. The two hexagonal branch pipes 6 have two sides connected. This connection method ensures that the water flow can flow between each other, while also forming a unique water flow circulation and exchange, improving the mixing effect of the water flow and enhancing the ability to carry impurities. The fourth branch pipe 7, the fifth branch pipe 8, and the sixth branch pipe 9 are connected in sequence, and the included angle between the fourth branch pipe 7 and the fifth branch pipe 8, and between the fifth branch pipe 8 and the sixth branch pipe 9 is less than 90°. These included angle designs further optimize the flow of water at the end of the channel. Two channels form a group, and multiple groups are provided on the drip irrigation tape body 14.

[0031] This technical solution, employing the channel angle design and hexagonal branch pipe 6-connection structure, optimizes the flow velocity distribution within the drip irrigation tape, avoiding the formation of low-velocity "dead zones" and reducing the occurrence of impurity deposition and channel blockage. The symmetrically arranged channels ensure continuous irrigation even when one channel experiences partial blockage, maintaining a partial water supply on the other. The opposing flows on both sides form a shear layer and intersecting vortices in the central confluence area (where the two hexagonal branch pipes 6 intersect). When pressure drop increases on one side due to particle accumulation, the central connection area guides some fluid to flow in the opposite direction, creating a "self-flushing" effect. The vortices at the backwater corners converge in the central area (vortex synergy), forming secondary flows (such as spiral flows) that suppress sediment buildup. When water flows through a narrow cross-section, the flow velocity increases, and the high-speed flow can carry particles through the narrow area, avoiding particle deposition caused by low flow velocity. When the water flows into the backwater bend, due to inertia and the separation effect of the wall, a reverse pressure gradient is generated, forming a local vortex. The secondary flow of the vortex continuously disturbs the wall boundary layer, destroys the conditions for particle deposition, and removes the deposited particles. At the confluence of the two hexagonal branch pipes 6, the change in the front and rear flow channels and the widening of the flow channels reduce the resistance, forming local turbulence, destroying the sediment adhesion layer, and reducing water flow blockage.

[0032] In another technical solution, it further includes: a water inlet pipe 1, which is connected to the drip irrigation tape body 14. The end of the water inlet pipe 1 is connected to a seventh branch pipe 2, and the end of the seventh branch pipe 2 is connected to the first branch pipe 3. The angle between the water inlet pipe 1 and the seventh branch pipe 2, and the angle between the seventh branch pipe 2 and the first branch pipe 3 are both less than 90°. The water inlet pipe 1 introduces water from the drip irrigation tape body 14 into the flow channel. The seventh branch pipe 2 is a transition pipe connecting the water inlet pipe 1 and the first branch pipe 3. Multiple water guide pipes 15 are connected to the water inlet pipe. The water guide pipes 15 are perpendicular to the water inlet pipe and are connected to the drip irrigation tape body 14 to introduce water from the drip irrigation tape body 14 into the water inlet pipe 1. With this technical solution, the angle between the inlet pipe 1 and the seventh branch pipe 2 is less than 90°, and the angle between the seventh branch pipe 2 and the first branch pipe 3 is also less than 90°. When the water flows from the inlet pipe 1 into the seventh branch pipe 2, the water flows through the backwater angle and generates a reverse pressure gradient due to inertia and wall separation effect, forming a local backflow zone (vortex).

[0033] In another technical solution, the end of the sixth branch pipe 9 is connected to the eighth branch pipe 10, and the end of the eighth branch pipe 10 is connected to the outlet pipe 11 (the outlet pipe is connected to multiple drain pipes 16, which are perpendicular to the outlet pipe). The angle between the sixth branch pipe 9 and the eighth branch pipe 10, and the angle between the eighth branch pipe 10 and the outlet pipe 11, are both less than 90°. The eighth branch pipe 10 is an intermediate pipe connecting the sixth branch pipe 9 and the outlet pipe 11, used to transfer the water flowing out of the sixth branch pipe 9 to the outlet pipe 11. The outlet pipe is connected to multiple drain pipes 16, and the end of the outlet pipe 11 is closed. This utility model, by setting an angle of less than 90°, causes the water flow to generate a reverse pressure gradient due to inertia and wall separation effect when passing through the backwater angle, forming a local backflow zone (vortex), effectively carrying impurities in the water and reducing the possibility of impurities depositing in the pipe. Similarly, the angle between the eighth branch pipe 10 and the outlet pipe 11 is also less than 90°. The angle between the two pipes is less than 90°, which greatly reduces the risk of clogging. Using this technical solution, the present invention, through the design of two angles less than 90°, creates a reverse pressure gradient when water flows through the backwater angle due to inertia and separation from the wall, forming a local backflow zone (vortex). This effectively carries away impurities in the water, reducing the possibility of impurities depositing in the pipe and effectively improving irrigation quality.

[0034] In another technical solution, the hexagonal branch pipe 6 includes two branch pipes 601 connected to the end of the third branch pipe 5. One branch pipe 601 is connected to a flow pipe 602 at its end, and the flow pipe 602 is connected to a first branch pipe 604 at its end. The remaining two branch pipes 601 in the two hexagonal branch pipes 6 are connected to a manifold 603 at their ends. The manifold 603 is connected to two second branch pipes 605 at its ends. In the same hexagonal branch pipe 6, the ends of the first branch pipe 604 and the second branch pipes 605 are both connected to the fourth branch pipe 7. The branch pipes 601, the manifold 603, the flow pipe 602, the first branch pipe 604, and the second branch pipes 605 together form a hexagon. The diameter ratio of the manifold 603 to the flow pipe 602 is 2:1. Using this technical solution, the hexagonal branch pipe 6 structure design in this utility model further optimizes the distribution and mixing of water flow within the drip irrigation tape. The use of pipes with different diameters creates varying flow velocities within the channels, resulting in localized turbulence and mixing. This helps disperse and carry away impurities, reducing blockages. Furthermore, when blockages occur in certain channels, the water can bypass the blockages through other pathways, enhancing the drip irrigation tape's ability to cope with blockages, ensuring the continuity and stability of irrigation, and improving the overall performance of the drip irrigation tape.

[0035] In another technical solution, in each hexagonal branch pipe 6, the length ratio of the flow pipe 602 to the branch pipe 601, the first branch pipe 604, and the second branch pipe 605 is 7:4 (i.e., the lengths of the branch pipe 601, the first branch pipe 604, and the second branch pipe 605 are equal, and the length ratio of the flow pipe 602 to the branch pipe 601 is 7:4). The length of the manifold 603 is equal to the length of the flow pipe 602. Using this technical solution, this invention further optimizes the flow state of water within the hexagonal branch pipe 6 by adjusting its dimensions. The different pipe lengths allow for a more reasonable distribution of water velocity and pressure at different locations, which helps to enhance the mixing effect of the water flow, improve the ability to carry impurities, and reduce the occurrence of blockages.

[0036] In another technical solution, the lengths of the first branch pipe 3, the third branch pipe 5, the fourth branch pipe 7, and the sixth branch pipe 9 are all equal to the length of the flow pipe 602 (i.e., the lengths of the first branch pipe 3, the third branch pipe 5, the fourth branch pipe 7, the sixth branch pipe 9, and the flow pipe 602 are equal). This design reduces the deposition of impurities within the pipes, further improving the anti-clogging performance of the drip irrigation tape and providing a more reliable guarantee for agricultural irrigation.

[0037] In another technical solution, the two first branch pipes 3 are connected by multiple first through holes 12, and the two sixth branch pipes 9 are connected by multiple second through holes 13. This technical solution, by setting the first and second through holes, helps to disturb the water flow in the first and sixth branch pipes, reducing blockages.

[0038] In another technical solution, the diameters of the inlet pipe 1, the seventh branch pipe 2, the first branch pipe 3, the second branch pipe 4, the third branch pipe 5, the fourth branch pipe 7, the fifth branch pipe 8, the sixth branch pipe 9, the eighth branch pipe 10, and the outlet pipe 11 are all equal to the diameter of the flow pipe 602. This design reduces localized buildup, enhances the anti-clogging ability of the drip irrigation tape, and ensures the long-term stable operation of the irrigation system.

[0039] In another technical solution, the ratio of the distance h between the first branch pipe 3 and the third branch pipe 5 (h is the distance between the first branch pipe 3 and the third branch pipe 5) to the diameter of the flow pipe is 1.4:1. This technical solution facilitates the dispersion and flow of impurities in this area, reduces the risk of impurities clogging the flow channel, and improves the anti-clogging performance of the drip irrigation tape.

[0040] In another technical solution, the angle between the water inlet pipe 1 and the seventh branch pipe 2, and the angle between the seventh branch pipe 2 and the first branch pipe 3 are both 45~60°;

[0041] The angles between the sixth branch pipe and the eighth branch pipe 10, and the angle between the eighth branch pipe 10 and the outlet pipe 11, are both 45° to 60°. This design reduces the accumulation and blockage of impurities at pipe connections.

[0042] In another technical solution, a spiral guide vane is a structure installed inside the manifold 603. Its pitch is 1:4 of the diameter of the manifold 603, and its inclination angle is 18-20°. Its function is to guide the water flow into a spiral pattern within the manifold 603, changing the flow pattern and distribution of the water. A hemispherical turbulence protrusion is a structure installed inside the flow pipe 602. The distance between two adjacent turbulence protrusions is 1:1.7 of the diameter of the flow pipe 602, and the height is 1:8 of the diameter of the flow pipe 602. Its function is to disrupt the water flow and enhance the mixing effect.

[0043] The manifold 603 is provided with a spiral guide vane. The ratio of the pitch of the spiral guide vane to the diameter of the manifold 603 is 1:4, and the inclination angle of the spiral guide vane is 18-20°.

[0044] Multiple hemispherical turbulence protrusions are spaced apart within the flow pipe 602. The ratio of the distance between any two adjacent turbulence protrusions to the diameter of the flow pipe 602 is 1:1.7, and the ratio of the height of the turbulence protrusion to the diameter of the flow pipe 602 is 1:8. This technical solution significantly improves the anti-clogging performance of the drip irrigation tape by incorporating spiral guide vanes and hemispherical turbulence protrusions. The spiral guide vanes ensure uniform distribution and mixing of water flow within the manifold 603, reducing the possibility of impurity deposition. The hemispherical turbulence protrusions enhance the turbulence of the water flow within the flow pipe 602, making it difficult for impurities to adhere to the pipe wall, further reducing the risk of clogging. Simultaneously, these structures optimize the flow state of water within the drip irrigation tape, improving the uniformity and stability of irrigation, and providing a more efficient and reliable drip irrigation device for agricultural irrigation.

[0045] The number of devices and processing capacity described herein are for simplification. Applications, modifications, and variations of the hexagonal conjugate double-flow labyrinth drip irrigation tape of this invention will be readily apparent to those skilled in the art.

[0046] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A hexagonal conjugate double-flow labyrinth drip irrigation tape, characterized in that, include: The drip irrigation tape itself; Two flow channels are connected to the drip irrigation tape body and are symmetrically arranged. Each flow channel includes two first branch pipes connected to the drip irrigation tape body, a second branch pipe connected to the end of the first branch pipe, a third branch pipe connected to the end of the second branch pipe, and a hexagonal branch pipe connected to the end of the third branch pipe. Two sides of the two hexagonal branch pipes are connected. The outlet end of the hexagonal branch pipe is connected to a fourth branch pipe. The end of the fourth branch pipe is connected to a fifth branch pipe. The end of the fifth branch pipe is connected to a sixth branch pipe. The angles between the second branch pipe and the first branch pipe, the second branch pipe and the third branch pipe, the fourth branch pipe and the fifth branch pipe, and the fifth branch pipe and the sixth branch pipe are all less than 90°.

2. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 1, characterized in that, Also includes: The inlet pipe is connected to the drip irrigation tape body, and the end of the inlet pipe is connected to a seventh branch pipe. The end of the seventh branch pipe is connected to the first branch pipe. The angle between the inlet pipe and the seventh branch pipe and the angle between the seventh branch pipe and the first branch pipe are both less than 90°.

3. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 2, characterized in that, The sixth branch pipe is connected to the eighth branch pipe at its end, and the eighth branch pipe is connected to the outlet pipe at its end. The angle between the sixth branch pipe and the eighth branch pipe, and the angle between the eighth branch pipe and the outlet pipe are both less than 90°.

4. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 3, characterized in that, The hexagonal branch pipe includes two branch pipes connected to the end of the third branch pipe. The end of one branch pipe is connected to a flow pipe, and the end of the flow pipe is connected to a first branch pipe. The ends of the remaining two branch pipes in the two hexagonal branch pipes are connected to a manifold. The end of the manifold is connected to two second branch pipes. In the same hexagonal branch pipe, the ends of the first branch pipe and the second branch pipe are both connected to the fourth branch pipe. The branch pipe, the manifold, the flow pipe, the first branch pipe, and the second branch pipe together form a hexagon. The diameter ratio of the manifold to the diameter of the flow pipe is 2:

1.

5. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 4, characterized in that, In each hexagonal branch pipe, the length ratio of the flow pipe to the branch pipe, the first branch pipe, and the second branch pipe is 7:4, wherein the length of the manifold is equal to the length of the flow pipe.

6. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 5, characterized in that, In the two flow channels, the two first branch pipes are connected by multiple first through holes, and the two sixth branch pipes are connected by multiple second through holes.

7. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 6, characterized in that, The diameters of the inlet pipe, the seventh branch pipe, the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe, the fifth branch pipe, the sixth branch pipe, the eighth branch pipe, and the outlet pipe are all equal to the diameter of the flow pipe.

8. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 7, characterized in that, The ratio of the distance h between the first branch pipe and the third branch pipe to the diameter of the flow pipe is 1.4:

1.

9. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 7, characterized in that, The angle between the inlet pipe and the seventh branch pipe, and the angle between the seventh branch pipe and the first branch pipe are both 45~60°; The angle between the sixth branch pipe and the eighth branch pipe, and the angle between the eighth branch pipe and the outlet pipe are both 45° to 60°.

10. The hexagonal conjugate double-flow labyrinth drip irrigation tape as described in claim 6, characterized in that, The manifold is equipped with a spiral guide vane, the ratio of the spiral guide vane's pitch to the diameter of the manifold is 1:4, and the inclination angle of the spiral guide vane is 18-20°. Multiple hemispherical turbulence protrusions are spaced apart inside the flow tube. The ratio of the distance between any two adjacent turbulence protrusions to the diameter of the flow tube is 1:1.7, and the ratio of the height of the turbulence protrusions to the diameter of the flow tube is 1:8.

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