Agricultural irrigation underground drip irrigation pipe

Abstract

The application provides an agricultural irrigation underground drip irrigation pipe, which comprises a main pipe body, an embedded drip head arranged in the main pipe body, a water inlet arranged on the embedded drip head, a first energy dissipation structure arranged in the embedded drip head, an outer inlaid sheath arranged outside the main pipe body, a water outlet arranged on the outer inlaid sheath, a second energy dissipation structure arranged on the inner side of the outer inlaid sheath, the embedded drip head is in a circular arc pipe shape, two mounting holes are arranged on the pipe wall of the main pipe body, the two ends of the embedded drip head pass through the two mounting holes respectively, a soft rubber ring is arranged on the outer wall of the end part, the soft rubber ring can be clamped on the outer side wall of the main pipe body, a plurality of pressing feet are arranged on the inner side wall of the outer inlaid sheath and correspond to the position of the soft rubber ring, the plurality of pressing feet are annularly and intervally distributed and can press the soft rubber ring on the outer side wall of the main pipe body, and the embedded drip head is communicated with the second energy dissipation structure through the gap between the pressing feet. The pipe can replace the embedded drip head alone, has low maintenance cost, good sealing performance and is suitable for underground irrigation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation technology, specifically to a buried drip irrigation pipe for agricultural irrigation. Background Technology

[0002] Drip irrigation technology, as a highly efficient and water-saving irrigation method, has been widely used in agricultural production. The product implementing this technology is the drip irrigation pipe, which is typically laid either above ground or buried underground. Buried drip irrigation pipes often use rigid materials such as PVC to withstand soil pressure. Common drip irrigation pipes are classified into embedded and external types based on the location of the drippers. Currently, an external-embedded drip irrigation pipe has also appeared on the market. This type of drip irrigation pipe not only combines the advantages of the embedded type (flow and pressure equalization) and the external type (anti-clogging), but also extends the water flow path through the combined flow channels of the embedded dripper and the external sheath, enhancing the effects of flow equalization, pressure equalization, and pressure compensation, or reducing the complexity of the flow channel design for both the embedded dripper and the external sheath.

[0003] However, the embedded drippers in this type of drip irrigation pipe are still pre-embedded inside the pipe wall during manufacturing, becoming part of the pipe wall. Once an embedded dripper becomes blocked or damaged, it cannot be replaced individually. Users can only take emergency measures such as blocking the section of pipe, which leads to water shortage in the irrigated area and affects the uniform growth of crops; or they can choose to replace the entire section or even the entire roll of drip irrigation pipe. This not only greatly increases maintenance costs and material waste, but also violates the original intention of water-saving irrigation technology to save energy and protect the environment. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a buried drip irrigation pipe for agricultural irrigation.

[0005] The technical solution of this utility model is as follows: An agricultural irrigation buried drip irrigation pipe includes a main pipe body with an embedded dripper inside. The embedded dripper has an inlet and a first energy dissipation structure inside. The main pipe body is covered with an outer sheath with an outlet and a second energy dissipation structure on its inner side. The embedded dripper is an arc-shaped tube. The main pipe body has two mounting holes on its wall. The two ends of the embedded dripper pass through the two mounting holes respectively, and the outer wall of the end is provided with a soft rubber ring that can be locked onto the outer wall of the main pipe body. The inner wall of the outer sheath is provided with multiple clamping feet corresponding to the position of the soft rubber ring. The multiple clamping feet are distributed in a ring-shaped interval and can press the soft rubber ring tightly onto the outer wall of the main pipe body. The embedded dripper is connected to the second energy dissipation structure through the gap between the clamping feet.

[0006] In the above scheme, the two mounting holes are spaced apart along the axial direction of the main body.

[0007] Furthermore, the embedded drip tip is a semi-circular tubular shape.

[0008] Furthermore, the curved middle section of the embedded drip tip abuts against the inner wall of the main tube.

[0009] In the above scheme, a frustum-shaped hole boss is provided on the outer side wall of the main body corresponding to the mounting hole position.

[0010] Furthermore, the soft rubber ring is a conical cap shape, and its inner side mates with the conical surface of the hole boss.

[0011] In the above scheme, a water-swellable adhesive is applied between the soft rubber ring and the outer wall of the embedded dropper end.

[0012] In the above scheme, the first energy dissipation structure is set in the pipe between the inlet and the end of the embedded dripper. The first energy dissipation structure includes a flow equalization section near the inlet and a flow disturbance section near the end of the embedded dripper. The flow equalization section is arrayed with columns, and the flow disturbance section is provided with multiple flow disturbance plates distributed in a toothed manner. The multiple flow disturbance plates are distributed along the extension direction of the pipe of the embedded dripper.

[0013] In the above scheme, the second energy dissipation structure includes two water inlet tanks, which are respectively set with two mounting holes. The clamping foot is set in the two water inlet tanks. The two water inlet tanks are connected by a connecting groove. The energy dissipation water flow tank connects the water inlet tanks and the water outlet.

[0014] Furthermore, the outer sheath is composed of two semi-circular tubular permeable parts joined together.

[0015] This utility model provides a buried drip irrigation pipe for agricultural irrigation, which includes an embedded dripper in an arc-shaped tubular form. The embedded dripper is inserted into the main pipe through an installation hole from the outside, and then continuously rotated until the inserted end of the dripper emerges from another installation hole. The embedded dripper is then secured by a clamping foot on an outer sheath, which presses down on a soft rubber ring, completing the installation. When replacement is needed, the outer sheath is removed, and the embedded dripper is extracted by rotating it by removing or breaking the soft rubber ring, allowing for individual maintenance or replacement of a single embedded dripper. Attached Figure Description

[0016] In the attached diagram: Figure 1 A cross-sectional schematic diagram of an externally mounted and internally embedded underground drip irrigation pipe; Figure 2 A schematic diagram of the main body and the embedded dripper; Figure 3 This is a schematic diagram of the flattened inner side of a leaking component.

[0017] The components represented by the various reference numerals in the diagram are: 1. Main pipe; 11. Mounting hole; 12. Hole boss; 2. Embedded dripper; 21. Inlet; 22. Soft rubber ring; 23. Glue tank; 24. Flow equalization section; 241. Column; 25. Turbulence section; 251. Bumper plate; 3. Outer sheath; 31. Outlet; 32. Pressing foot; 33. Water seepage component; 34. Inlet groove; 35. Energy dissipation flow groove; 36. Connecting groove. Detailed Implementation

[0018] like Figure 1 As shown, this utility model embodiment provides an agricultural irrigation buried drip irrigation pipe, which includes a main body 1, an embedded dripper 2 inside the main body 1, an inlet 21 on the embedded dripper 2, and a first energy dissipation structure inside the embedded dripper 2. An outer sheath 3 is provided outside the main body 1, and an outlet 31 is provided on the outer sheath 3. A second energy dissipation structure is provided on the inner side of the outer sheath 3. The embedded dripper 2 is an arc-shaped tube. Two mounting holes 11 are provided on the wall of the main body 1. The two ends of the embedded dripper 2 pass through the two mounting holes 11 respectively, and a soft rubber ring 22 is provided on the outer wall of the end. The soft rubber ring 22 can be locked on the outer wall of the main body 1. Multiple clamping feet 32 ​​are provided on the inner wall of the outer sheath 3 corresponding to the position of the soft rubber ring 22. The multiple clamping feet 32 ​​are distributed in a ring at intervals and can press the soft rubber ring 22 tightly on the outer wall of the main body 1. The embedded dripper 2 communicates with the second energy dissipation structure through the gap between the clamping feet 32.

[0019] During installation, insert one end of the embedded dripper 2 into the main body 1 through a mounting hole 11 outside the main body 1, and then rotate and continue to insert until the inserted end of the embedded dripper 2 passes through another mounting hole 11. Then, press the soft rubber ring 22 with the clamping foot 32 of the outer sleeve 3 to fix the embedded dripper 2, thus completing the installation.

[0020] When replacement is needed, remove the outer sheath 3, and pull out the inner dripper 2 by forcefully pulling or breaking the soft rubber ring 22. This allows for individual maintenance or replacement of a single inner dripper 2, improving the economic efficiency of drip irrigation pipe maintenance.

[0021] The technical solution of this embodiment is described in detail below.

[0022] The main pipe 1 is a rigid pipe with a certain degree of hardness, such as PVC or PE pipe. Two mounting holes 11 are formed on the wall of the main pipe 1, spaced apart along the axial direction of the main pipe 1 and located on the same generatrix of the pipe wall. The spacing between the two mounting holes 11 is set according to the spacing between the two ends of the embedded drip tip 2. Additionally, a frustum-shaped boss 12 is provided on the outer wall of the main pipe 1 corresponding to the mounting hole 11. The boss 12 surrounds the mounting hole 11 and is integrally formed with the main pipe 1. Figure 2 As shown.

[0023] The protrusion 12 can enhance the structural strength of the pipe wall at the edge of the mounting hole 11, prevent the edge of the mounting hole 11 from cracking, and at the same time, it can easily cooperate with the soft rubber ring 22 to form a seal.

[0024] The soft rubber ring 22 is a conical cap shape and its inner side fits against the conical surface of the hole boss 12 to form a conical cover, thereby improving the sealing performance.

[0025] like Figure 1 As shown, the outer edge of the soft rubber ring 22 extends inclined towards the hole boss 12, so that the soft rubber ring 22 can hook the hole boss 12. This serves three purposes: first, to seal the hole and prevent water from seeping into the mounting hole 11; second, to fix the embedded dripper 2; and third, to make it easier for the end of the embedded dripper 2 to retract inward when it passes through the mounting hole 11, making it easier and smoother for the end of the embedded dripper 2 to pass through the mounting hole 11.

[0026] The inner edge of the soft rubber ring 22 is connected to the outer side of the end of the embedded dropper 2, and the thickness of the inner edge of the soft rubber ring 22 is greater than the thickness of the outer edge, which improves the strength of the soft rubber ring 22 against reverse folding, thereby increasing the fit with the hole boss 12 and improving the fixing effect of the embedded dropper 2.

[0027] In this embodiment, the soft rubber ring 22 is fixed to the end of the embedded dripper 2 by heat fusion or bonding, making the soft rubber ring 22 and the embedded dripper 2 an integral unit, improving sealing and connection strength. When it is necessary to disassemble the embedded dripper 2, the embedded dripper 2 can be pulled out by cutting or breaking the soft rubber ring 22 at one end, and then a new embedded dripper 2 can be replaced, or a new soft rubber ring 22 can be heat-fused or bonded to the embedded dripper 2 after repair. This avoids the need to replace the entire section or even the entire roll of drip irrigation tubing due to the damage of a single embedded dripper 2, improving the economy of drip irrigation tubing use.

[0028] Furthermore, a sealant can be applied between the soft rubber ring 22 and the outer wall of the end of the embedded dripper 2, that is, a sealant can be applied to the inner conical surface of the soft rubber ring 22 and / or the outer wall of the embedded dripper 2 opposite to the inner wall of the mounting hole 11, to improve the sealing of the connection position of the embedded dripper 2 to the main body 1 and prevent water leakage or seepage. The sealant is preferably a water-swellable adhesive.

[0029] Furthermore, in this embodiment, annular adhesive grooves 23 are provided on the inner conical surface of the soft rubber ring 22 and on the outer side wall opposite to the inner wall of the mounting hole 11 of the embedded dropper 2. The adhesive grooves 23 are pre-filled with water-swellable adhesive to prevent the sealant applied by the embedded dropper 2 from being scraped off by the mounting hole 11 when it passes through the mounting hole 11, thus ensuring the sealing performance.

[0030] like Figure 1 and Figure 2As shown, the embedded dripper 2 is a semi-circular arc-shaped tube, and the outermost arc radius is equal to the diameter of the inner hole of the main tube 1, so that the arc-shaped middle section of the embedded dripper 2 abuts against the inner side wall of the main tube 1, forming a fixation and support.

[0031] For ease of understanding, the main pipe body 1 is placed horizontally, with two mounting holes 11 located at the frontmost side of the main pipe body 1, both situated on a horizontal plane passing through the central axis of the main pipe body 1. The embedded dripper 2 extends in an arc shape on the horizontal plane passing through the central axis of the main pipe body 1. Therefore, since the radius of the arc of the embedded dripper 2 is equal to the diameter of the inner hole of the main pipe body 1, the middle arc of the embedded dripper 2 abuts against the rearmost position of the inner wall of the main pipe body 1, thereby providing support for the middle arc of the embedded dripper 2 and improving the stability of the embedded dripper 2 within the main pipe body 1.

[0032] like Figure 2 As shown, when installing the embedded dripper 2, both ends are horizontally aligned with the two mounting holes 11. Insert one end of the embedded dripper 2 into one mounting hole 11, and then rotate the embedded dripper 2 around the center of the arc of the embedded dripper 2 as the axis to gradually insert the embedded dripper 2 into the main pipe until it passes through the other mounting hole 11, thus completing the installation of the embedded dripper 2.

[0033] like Figure 1 As shown, the inlet 21 is located in the middle of the arc-shaped section of the embedded dripper 2, and is either mesh-like or single-hole-like. A first energy dissipation structure is provided in both sections of the pipe between the inlet 21 and the two ends of the embedded dripper 2. The first energy dissipation structure includes a flow equalization section 24 near the inlet 21 and a flow turbulence section 25 near the end of the embedded dripper 2. The flow equalization section 24 contains an array of columns 241, and the flow turbulence section 25 contains multiple baffles 251 arranged in a toothed pattern, with the multiple baffles 251 distributed along the extension direction of the pipe of the embedded dripper 2.

[0034] Column forest 241 is formed by multiple parallel and staggered cylindrical columns, such as Figure 1 As shown, when the water flows through the column forest 241, it collides with the cylinder, causing diversion and changing the flow direction. Through multiple diversions and changes in flow direction, the energy of the water flow is consumed, thereby playing a role in equalizing the flow and reducing the flow velocity and water pressure.

[0035] Multiple baffles 251 are connected to the inner wall of the embedded dripper 2 and extend towards the center of the pipe. The multiple baffles 251 are interlocked and distributed along the extension direction of the embedded dripper 2, forming a... Figure 1 The distribution pattern shown creates a serpentine flow channel. Furthermore, all the baffles 251 are inclined in the direction of water flow. When water flows through the baffle section 25, the baffles 251 further deplete the water's energy, reducing its velocity. Additionally, eddies are generated, further hindering water flow and reducing its velocity.

[0036] The embedded drip head 2 can be formed by joining two arc-shaped half-tubes together through hot-melt welding, bonding or snap-fit, so as to facilitate the production of the inner column forest 241 and the baffle 251.

[0037] The outer sheath 3 can be made by adding a clamping foot 32 to the inner water flow groove on the basis of the existing sheath. Therefore, this application does not further limit the specific shape of the sheath and the specific composition of the second energy dissipation structure, as long as the clamping foot 32 can be set in the water flow groove to clamp the soft rubber ring 22.

[0038] In this embodiment, an outer sheath 3 is provided, which is composed of two semi-circular tubular water-permeable parts 33 with semi-circular cross sections. The outer sheath 3 is tubular and sleeved on the outer wall of the main body 1. The two water-permeable parts 33 are connected by snap-fit ​​or adhesive process.

[0039] The two seepage components have basically the same structure, and both have a second energy dissipation structure on the inside. The second energy dissipation structure includes two water inlet tanks 34 and several energy dissipation water flow tanks 35.

[0040] like Figure 3 As shown, two water inlet grooves 34 on the same seepage component are respectively provided with two mounting holes 11 in the axial direction of the main body 1, and the water inlet grooves 34 extend circumferentially along the main body 1, respectively communicating with two water inlet grooves 34 of another seepage component. Furthermore, the two water inlet grooves 34 on the same seepage component are connected by an axially extending connecting groove 36.

[0041] The energy dissipation water channel 35 is a diamond-shaped mesh channel with multiple channels, distributed on both sides of the inlet channel 34, connecting the inlet channel 34 and the outlet 31.

[0042] Please see details Figure 3 As shown, a portion of the energy-dissipating water channels 35 are located at both ends of the seepage component, extending axially in a bent manner. They connect inward to the inlet channel 34 and extend outward through the end of the seepage component, with the outer port being the outlet 31. Multiple energy-dissipating water channels 35 are provided at the end of the seepage component, evenly arranged along its circumference.

[0043] Another portion of the energy-dissipating water flow channel 35 is located between the two inlet channels 34 of the same seepage component and distributed on both sides of the connecting channel 36. This portion of the energy-dissipating water flow channel 35 extends circumferentially along the seepage component, connects inward to the connecting channel 36, extends outward to the mating edge of the two seepage components, and bends through the outer side of the outer sheath 3. This outer port is the outlet 31. Multiple energy-dissipating water flow channels 35 are provided between the two inlet channels 34, and are evenly arranged along the axial direction of the seepage component.

[0044] The various tank structures of the second energy dissipation structure cooperate with the outer wall of the main body 1 to form channels for water flow.

[0045] The two seepage components differ in that one seepage component has clamping feet 32 ​​in each of its two water inlet grooves 34, and each water inlet groove 34 has a set of clamping feet 32. Each set of clamping feet 32 ​​includes multiple feet, which are arranged in a ring-shaped interval to correspond to the ring shape of the soft rubber ring 22. Figure 3 As shown, in this embodiment, each group includes four clamping feet 32 ​​arranged in a cross array. Water flowing out of the embedded dripper 2 flows into the water inlet tank 34 through the gap between adjacent clamping feet 32.

[0046] The protruding end of the clamping foot 32 is inclined, which matches the inclination angle of the outer conical surface of the soft rubber ring 22 to press the soft rubber ring 22 onto the hole boss 12.

[0047] The clamping foot 32 is made of the same material as the seepage part and is integrally injection molded with the seepage part.

Claims

1. A buried drip irrigation pipe for agricultural irrigation, comprising a main pipe body (1), an embedded dripper (2) inside the main pipe body (1), an inlet (21) on the embedded dripper (2), a first energy dissipation structure inside the inlet dripper (2), an outer sheath (3) outside the main pipe body (1), an outlet (31) on the outer sheath (3), a second energy dissipation structure on the inner side of the outer sheath (3), characterized in that, The embedded dripper (2) is an arc-shaped tube. The main tube (1) has two mounting holes (11) on its tube wall. The two ends of the embedded dripper (2) pass through the two mounting holes (11) respectively, and the outer wall of the end is provided with a soft rubber ring (22). The soft rubber ring (22) can be stuck on the outer wall of the main tube (1). The inner wall of the outer sheath (3) is provided with multiple pressing feet (32) corresponding to the position of the soft rubber ring (22). The multiple pressing feet (32) are distributed in a ring-shaped interval and can press the soft rubber ring (22) on the outer wall of the main tube (1). The embedded dripper (2) is connected to the second energy dissipation structure through the gap between the pressing feet (32).

2. The buried drip irrigation pipe for agricultural irrigation as described in claim 1, characterized in that, Two mounting holes (11) are spaced apart along the axial direction of the main body (1).

3. The buried drip irrigation pipe for agricultural irrigation as described in claim 2, characterized in that, The embedded drip head (2) is a semi-circular tubular shape.

4. The buried drip irrigation pipe for agricultural irrigation as described in claim 3, characterized in that, The arc-shaped middle section of the embedded drip head (2) abuts against the inner side wall of the main body (1).

5. The buried drip irrigation pipe for agricultural irrigation as described in claim 2, characterized in that, The outer wall of the main body (1) is provided with a frustum-shaped hole boss (12) corresponding to the mounting hole (11).

6. The buried drip irrigation pipe for agricultural irrigation as described in claim 5, characterized in that, The soft rubber ring (22) is a conical cap shape, and its inner side is in contact with the conical surface of the hole boss (12).

7. The buried drip irrigation pipe for agricultural irrigation as described in claim 1, characterized in that, Water-swellable adhesive is applied between the soft rubber ring (22) and the outer wall of the end of the embedded dropper (2).

8. The buried drip irrigation pipe for agricultural irrigation as described in claim 1, characterized in that, The first energy dissipation structure is set in the pipe between the inlet (21) and the end of the embedded dripper (2). The first energy dissipation structure includes a flow equalization section (24) near the inlet (21) and a flow disturbance section (25) near the end of the embedded dripper (2). The flow equalization section (24) is arranged with columns (241), and the flow disturbance section (25) is provided with multiple flow disturbance plates (251) distributed in a toothed manner. The multiple flow disturbance plates (251) are distributed along the extension direction of the pipe of the embedded dripper (2).

9. The buried drip irrigation pipe for agricultural irrigation as described in claim 1, characterized in that, The second energy dissipation structure includes two water inlet tanks (34) and at least one energy dissipation flow tank (35), which are respectively set in two mounting holes (11). The clamping foot (32) is set in the two water inlet tanks (34). The two water inlet tanks (34) are connected by a connecting groove (36). The energy dissipation flow tank (35) is connected to the water inlet tanks (34) and the water outlet (31).

10. The buried drip irrigation pipe for agricultural irrigation as described in claim 9, characterized in that, The outer sheath (3) is composed of two semi-circular tubular permeable parts (33).

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