Three-layer composite woven flexible hose

Abstract

The utility model relates to the field of flexible hoses, aims to solve the problem that drip irrigation is not easy to control according to water pressure change in the drip irrigation process of an existing hose, and discloses a three-layer composite woven flexible hose which comprises a flexible hose and an inner sleeve part, and the flexible hose is of a three-layer structure and comprises an outer covering film, a woven layer and an inner covering film. Second through holes are evenly formed in the surface of the flexible hose, the inner sleeve part is installed in the flexible hose, a bonding layer is arranged between the inner sleeve part and the inner wall of the flexible hose, the inner sleeve part comprises a first inner pipe and a second inner pipe, first through holes are evenly formed in the first inner pipe, and second through holes are evenly formed in the second inner pipe. And the first through holes and the second through holes are staggered. By combining the three layers of composite flexible hoses and the inner sleeve part, drip irrigation can be stopped if the water flow pressure is too large during drip irrigation, and drip irrigation can be automatically controlled according to water pressure changes.

Description

Technical Field

[0001] The utility model relates to the field of flexible hoses, in particular to a three-layer composite braided flexible hose. Background Art

[0002] Drip irrigation is one of the most effective water-saving irrigation methods in arid and water-scarce areas, achieving a water utilization rate of up to 95%. Current drip irrigation systems are typically single-layer, and the installation of joints is laborious and requires manual drilling and installation on-site, without pre-buried joints. Drip irrigation uses a low-pressure piping system and emitters on capillary tubes to deliver water and nutrients to the soil in the root zone, evenly and slowly. However, if water flows too quickly within the pipes, the drip irrigation rate accelerates, accelerating the flow through the drip irrigation pipe holes. This can lead to excessive irrigation at the root zone, impacting crop growth. Furthermore, the flow of water within the drip irrigation pipe cannot be automatically controlled. The company's R&D personnel have continuously researched and developed various drip irrigation pipes for agricultural applications. To address the challenges of flexible hose drip irrigation, the inventors developed a three-layer composite braided flexible hose. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a three-layer composite braided flexible hose.

[0004] The utility model is realized through the following technical solutions:

[0005] A three-layer composite braided flexible hose comprises a flexible hose and an inner sleeve portion. The flexible hose has a three-layer structure, namely an outer film, a braided layer and an inner film. The outer film, the braided layer and the inner film are formed by hot-melt. The inner film and the outer film are both made of PE material. Second through holes are evenly opened on the surface of the flexible hose. The inner sleeve portion is installed in the flexible hose. An adhesive layer is provided between the inner sleeve portion and the inner wall of the flexible hose. The inner sleeve portion comprises a first inner tube and a second inner tube. The first inner tube and the second inner tube form a circular tube. First through holes are evenly opened on the first inner tube. The first through holes and the second through holes are staggered.

[0006] As a preferred technical solution of the present utility model, the first inner tube is made of plastic material, and the second inner tube is made of rubber material.

[0007] As a preferred technical solution of the present invention, the braided layer is woven from PE silk threads, and the outer coating is a wear-resistant layer.

[0008] As a preferred technical solution of the present invention, the second through hole is a pre-buried hole, and a pre-buried joint is set inside. The pre-buried joint is set every 30-80 cm.

[0009] As a preferred technical solution of the present invention, the diameter of the inner sleeve portion composed of the first inner tube and the second inner tube is smaller than that of the flexible hose.

[0010] As a preferred technical solution of the present invention, the adhesive layer is made of Velcro and is used for connecting the inner sleeve part and the flexible hose.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model uses a tube layer structure to make the flexible hose a three-layer composite structure. The middle braided layer increases the strength of the hose, while the inner coating is provided inside the flexible hose and the outer coating is provided outside the flexible hose, making the flexible hose more wear-resistant and increasing the service life of the flexible hose. A detachable inner sleeve portion is provided inside the flexible hose. The inner sleeve portion is used to relieve the pressure of the water flow in the flexible hose. When the water flow increases, the inner sleeve portion is rounded, so that the first inner tube and the inner wall of the flexible hose are in contact. Since the first through hole and the second through hole are misaligned, the flexible hose stops drip irrigation and resumes normal drip irrigation when the water pressure returns to normal. The utility model combines the three-layer composite flexible hose and the inner sleeve portion. If the water pressure is too high during drip irrigation, the drip irrigation will be stopped, and the drip irrigation can be automatically controlled according to the change in water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is an enlarged view of the tube layer structure of the present utility model.

[0015] Figure 3 This is an axonometric view of the flexible hose of the utility model in cooperation with the first inner tube and the second inner tube.

[0016] Figure 4 This is a schematic diagram of the misalignment of the first through hole and the second through hole of the present invention.

[0017] In the figure: A, tube layer structure, 1, first inner tube, 2, first through hole, 3, second inner tube, 4, flexible hose, 5, second through hole, 6, adhesive layer, 7, inner film, 8, braided layer, 9, outer film. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0019] See also Figure 1-4 , the utility model provides a technical solution:

[0020] A three-layer composite braided flexible hose, including a flexible hose 4 and an inner sleeve portion, wherein the flexible hose 4 is a three-layer structure, namely an outer film 9, a braided layer 8 and an inner film 7. After multi-layer compounding, the flexible hose is formed into a composite hose as a whole. The presence of the braided layer 8 increases the overall strength of the flexible hose. The outer film 9, the braided layer 8 and the inner film 7 are hot-melted. The inner film 7 and the outer film 9 are both made of PE material. The inner film 7 and the outer film 9 include but are not limited to TPU, PA, PVC and hot melt adhesive materials. A second through hole is evenly opened on the surface of the flexible hose 4 5. The inner sleeve part is installed in the flexible hose 4. An adhesive layer 6 is provided between the inner sleeve part and the inner wall of the flexible hose 4. The setting of the adhesive layer 6 facilitates the loading and unloading of the inner sleeve part. Whether to install the inner sleeve part can be selected according to needs. The inner sleeve part includes a first inner tube 1 and a second inner tube 3. The first inner tube 1 and the second inner tube 3 form a circular tube. The first through hole 2 is evenly opened on the first inner tube 1. The first through hole 2 and the second through hole 5 are staggered. The staggered through holes stop drip irrigation when the water pressure in the drip irrigation pipe is too high, thereby realizing automatic control of drip irrigation.

[0021] The first inner tube 1 is made of plastic material, and the second inner tube 3 is made of rubber material. The first inner tube 1 is set to be relatively hard plastic in order to cooperate with the flexible second inner tube 3 so that the first inner tube can fit with the flexible hose when the water pressure is too high.

[0022] The braided layer 8 is woven from PE threads, and the braided layer 8 includes but is not limited to polyester and polypropylene threads. The outer coating 9 is a wear-resistant layer. The presence of the braided layer 8 increases the strength of the flexible hose 4, and the outer coating 9 increases the wear resistance, thereby increasing the overall wear resistance of the flexible hose and preventing wear.

[0023] The second through hole 5 is a pre-buried hole with a pre-buried joint inside. The pre-buried joint is set every 30-80 cm. The pre-buried method replaces the on-site production of drip irrigation holes, which is more efficient.

[0024] The inner sleeve portion composed of the first inner tube 1 and the second inner tube 3 has a smaller diameter than the flexible hose 4 .

[0025] The adhesive layer 6 is made of Velcro and is used for connecting the inner sleeve part and the flexible hose 4. The adhesive layer 6 is provided for disassembly and assembly of the inner sleeve part.

[0026] Working Principle: This three-layer composite braided flexible hose utilizes a three-layer composite structure. The combination of the braided layer 8, inner coating 7, and outer coating 9 increases the overall strength of the flexible hose 4. During use, the three-layer composite braided flexible hose is laid near the root system of crops. The inner casing portion, consisting of the first inner tube 1 and the second inner tube 3, is connected to a water source. When the water pressure is normal, water in the inner casing portion flows through the first through-hole 2 to the gap between the inner casing portion and the flexible hose 4, and then flows out through the second through-hole 5, providing drip irrigation. When the water pressure increases, the inner casing portion is tightened. The second inner tube 3 is flexible. When the water pressure is too high, the first inner tube 1 aligns with the inner wall of the flexible hose 4, causing the first through-hole 2 and the second through-hole 5 to be misaligned, thereby stopping the drip irrigation of the second through-hole 5. When the water pressure returns to normal, the elasticity of the second inner tube 3 causes the first inner tube 1 to stop aligning with the flexible hose 4, and normal drip irrigation will then occur. The advantage of this is that when the water pressure becomes unstable, drip irrigation can be automatically controlled in time to prevent excessive drip irrigation water flow to the crop root system and protect the crops.

[0027] Example 2,

[0028] The inner sleeve part composed of the first inner tube 1 and the second inner tube 3 is replaced with a hard tube so that the inner sleeve part does not deform. Under normal water pressure, water will flow through the first through hole 2 to the space between the inner sleeve part and the flexible hose 4. When the water in this space increases and is not enough to be discharged in time through the second through hole 5, the water pressure in this space is greater than the water pressure in the inner sleeve part. Therefore, the water flow in the inner sleeve part will no longer flow through the first through hole 2 to the space between the inner sleeve part and the flexible hose 4. Therefore, by adding an inner sleeve on the basis of the original three-layer composite flexible hose, drip irrigation can be controlled according to the change of water pressure during drip irrigation. When the water pressure between the inner sleeve part and the flexible hose 4 is greater than the water pressure in the inner sleeve part, the water flow in the inner sleeve part will continue to flow forward.

[0029] The method of embodiment 1 is usually more commonly used. When irrigating crops, drip irrigation can be controlled to prevent excessive irrigation at the root system of the crops, thus playing a protective role.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-layer composite braided flexible hose, comprising a flexible hose (4) and an inner sleeve portion, characterized in that: The flexible hose (4) has a three-layer structure, which includes an outer film (9), a braided layer (8) and an inner film (7). The outer film (9), the braided layer (8) and the inner film (7) are formed by hot melting. The inner film (7) and the outer film (9) are both made of PE material. A second through hole (5) is evenly opened on the surface of the flexible hose (4). The inner sleeve part is installed in the flexible hose (4). An adhesive layer (6) is provided between the inner sleeve part and the inner wall of the flexible hose (4). The inner sleeve part includes a first inner tube (1) and a second inner tube (3). The first inner tube (1) and the second inner tube (3) form a circular tube. A first through hole (2) is evenly opened on the first inner tube (1). The first through hole (2) and the second through hole (5) are arranged alternately.

2. The three-layer composite braided flexible hose according to claim 1, characterized in that: The first inner tube (1) is made of plastic material, and the second inner tube (3) is made of rubber material.

3. The three-layer composite braided flexible hose according to claim 1, characterized in that: The braided layer (8) is braided with PE threads, and the outer coating (9) is a wear-resistant layer.

4. The three-layer composite braided flexible hose according to claim 1, characterized in that: The second through hole (5) is a pre-buried hole, and a pre-buried joint is set inside. The pre-buried joint is set every 30-80 cm.

5. The three-layer composite braided flexible hose according to claim 1, characterized in that: The diameter of the inner sleeve portion composed of the first inner tube (1) and the second inner tube (3) is smaller than that of the flexible hose (4).

6. The three-layer composite braided flexible hose according to claim 1, characterized in that: The adhesive layer (6) is made of Velcro and is used for connecting the inner sleeve part and the flexible hose (4).

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