Drinking tube
The multi-layered structure design of the drinking water pipe solves the problems of corrosion, bacterial growth, and poor pressure resistance, providing a hygienic, pressure-resistant, and easy-to-install drinking water pipe solution, and improving the safety and service life of the drinking water pipe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YITAI PLASTIC VACUUM FORMING CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-16
AI Technical Summary
Existing drinking water pipes suffer from problems such as corrosion, bacterial growth, excessive heavy metals, poor pressure resistance, complex installation, high transportation costs, and easy deformation, which affect health and safety.
It adopts a multi-layer structure design from the inside out, including a food-grade PE layer, an EVA layer, a braided layer and a hook-and-loop layer. The layers are bonded together by thermal fusion to form a strong connection, which enhances the resistance to pressure and expansion, and improves the resistance to water pressure and tensile strength.
It achieves high hygiene standards, good pressure resistance, prevents deformation or explosion, is easy to install, reduces transportation costs, and ensures water quality safety.
Smart Images
Figure CN224364486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drinking water pipe technology, and in particular to a drinking water pipe. Background Technology
[0002] Water pipes are typically made of metal or plastic. After a few years of use, metal pipes accumulate a large amount of rust and scale inside, harboring bacteria that thrive on their rough inner walls. This corrosion leads to excessively high levels of heavy metals in the water, seriously endangering human health. While higher-quality metal pipes are corrosion-resistant, their installation is complex, quality is inconsistent, and their rapid heat conduction causes heat loss. Another disadvantage of metal pipes is their relative weight, resulting in high transportation costs. Installation requires machinery, making construction cumbersome; they are also expensive, especially for welding. Plastic pipes, while lightweight, corrosion-resistant, non-toxic, and easy to install, have poor pressure resistance. They easily expand under pressure and do not easily shrink back, causing them to burst under high pressure. Furthermore, they are prone to deformation over time. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a drinking pipe with a high level of hygiene and good pressure resistance.
[0004] This utility model provides a drinking pipe, comprising a first layer, a second layer, a third layer, a fourth layer, a fifth layer, and a sixth layer arranged sequentially from the inside out. The first layer is a food-grade PE layer, the second layer, the fifth layer, and the sixth layer are all food-grade EVA layers, the third layer is a braided layer, and the fourth layer is a woven layer.
[0005] Optionally, the thickness of the third layer is less than the thickness of any one of the first layer, the second layer, the fifth layer, and the sixth layer; the thickness of the fourth layer is less than the thickness of any one of the first layer, the second layer, the fifth layer, and the sixth layer.
[0006] Optionally, the thickness of the third layer is approximately 0.1 mm; and / or, the thickness of the fourth layer is approximately 0.1 mm.
[0007] Optionally, the thickness of the first layer is less than the thickness of the second layer; or, the thickness of the fifth layer is greater than the thickness of the sixth layer.
[0008] Optionally, the thickness of the first layer is approximately 0.2 mm; the thickness of the second layer is approximately 1 mm; the thickness of the fifth layer is approximately 1 mm; and the thickness of the sixth layer is approximately 0.2 mm.
[0009] Optionally, both the third and fourth layers are woven from polyester yarn.
[0010] Optionally, in the length direction of the drinking pipe, within the same length range, the number of grids in the third layer is greater than the number of grids in the fourth layer.
[0011] Optionally, the third layer has a diamond-shaped grid pattern, and the fourth layer has an elliptical grid pattern.
[0012] Optionally, the extension direction of the grid lines in the third layer intersects with the extension direction of the grid lines in the fourth layer.
[0013] Optionally, the hardness of the sixth layer is greater than that of the fifth layer.
[0014] The raw materials and multi-layer structure used in the drinking pipe provided by this utility model not only enable the drinking pipe to meet relevant drinking water standard tests, but also protect the inner tube of the drinking pipe, preventing deformation or bursting even under water pressure expansion; the combination of braided and hooked layers can play a better role in resisting pressure expansion, improving the water pressure resistance and tensile strength of the drinking pipe. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of a drinking pipe according to an embodiment of the present invention.
[0017] Figure 2 for Figure 1 The image shows a cross-sectional view of the drinking water pipe. Detailed Implementation
[0018] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0019] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.
[0020] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0022] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0023] Please refer to Figure 1 and Figure 2 The drinking pipe provided in the first embodiment of this utility model includes a first layer 11, a second layer 12, a third layer 13, and a fourth layer 14 arranged sequentially from the inside out (for distinction, Figure 1 The layers are: the fourth layer (14, indicated by a dashed line), the fifth layer (15), and the sixth layer (16). The first layer (11) is a food-grade PE layer; the second, fifth, and sixth layers (12, 15, and 16) are all food-grade EVA layers; the third layer (13) is a woven layer; and the fourth layer (14) is a crocheted layer. Specifically, the food-grade PE layer uses food-grade PE (polyethylene) material, which meets food safety standards. This includes types such as low-density polyethylene (LDPE) and high-density polyethylene (HDPE), and does not contain plasticizers, heavy metals, or other harmful substances. It is non-toxic, odorless, corrosion-resistant, and resistant to low temperatures (-60℃ to 110℃). The food-grade EVA layer uses food-grade EVA (ethylene-vinyl acetate copolymer) material, which meets food safety standards. It has good heat resistance (suitable for high-temperature food packaging), flexibility, elasticity, and transparency, and can protect the food from losing its shape. It is also non-toxic and odorless.
[0024] In this embodiment, the raw materials and multi-layer structure used not only enable the drinking pipe to meet relevant drinking water standard tests (such as Australian AS / NZS 4002:2018), but also protect the inner tube of the drinking pipe, preventing deformation or bursting even under water pressure expansion; the combination of braided and hook-woven layers can play a better role in resisting pressure expansion, improving the water pressure resistance and tensile strength of the drinking pipe.
[0025] In this embodiment, the thickness of the third layer 13 is less than the thickness of any one of the first layer 11, the second layer 12, the fifth layer 15, and the sixth layer 16; the thickness of the fourth layer 14 is also less than the thickness of any one of the first layer 11, the second layer 12, the fifth layer 15, and the sixth layer 16, meaning that the thicknesses of the third layer 13 and the fourth layer 14 are the smallest. Specifically, the thickness of the third layer 13 can be approximately 0.1 mm. The thickness of the fourth layer 14 can be approximately 0.1 mm.
[0026] In this embodiment, the thickness of the first layer 11 is less than the thickness of the second layer 12. Specifically, the thickness of the first layer 11 can be approximately 0.2 mm, and the thickness of the second layer 12 can be approximately 1 mm.
[0027] In this embodiment, the thickness of the fifth layer 15 is greater than the thickness of the sixth layer 16. Specifically, the thickness of the fifth layer 15 can be approximately 1 mm, and the thickness of the sixth layer 16 can be approximately 0.2 mm.
[0028] In this embodiment, the total thickness of the drinking pipe can be 2.3mm-2.5mm. It is understood that the total thickness of the drinking pipe and the thickness of each layer can be adjusted as needed, and any minor adjustments to the thickness of each layer within a certain range should be covered by the scope of protection of this application.
[0029] In this embodiment, both the third layer 13 and the fourth layer 14 are woven from polyester yarn. Specifically, the polyester yarn can be approximately 840D (denier). In this embodiment, the braided layers are directly crocheted after being woven to form a crocheted layer, without needing to wrap the braided layers with other materials before crocheting.
[0030] In this embodiment, along the length of the drinking pipe, within the same length range, the third layer 13 has a greater number of grids than the fourth layer 14. Specifically, along the length of the drinking pipe, within a 1 cm length range, the braided layer has three grids, and the hook-and-loop layer has two grids.
[0031] Specifically, the third layer 13 can be a diamond-shaped grid pattern, and the fourth layer 14 can be an oval grid pattern. Figure 1 The grids of the third layer 13 and the fourth layer 14 are for illustrative purposes only; the actual grid lines are denser than shown in the illustration. Specifically, at least some of the grid lines in the third layer 13 extend in the same direction as at least some of the grid lines in the fourth layer 14. This arrangement enhances the compressive strength and expansion resistance of the third layer 13 and the fourth layer 14. For example, in the illustrated embodiment, the grid lines of the third layer 13 extend at approximately a 45° angle to the length of the water pipe, while some of the grid lines of the fourth layer 14 extend in the same direction as the length of the water pipe, and another portion extends in a direction roughly perpendicular to the length of the water pipe.
[0032] Specifically, the braided layer is formed using a knitting process, while the crocheted layer is formed using a crocheting process. Knitting typically involves weaving warp and weft threads, while crocheting typically uses a crochet hook to chain loops together.
[0033] In this embodiment, adjacent layers of the first layer 11, the second layer 12, the third layer 13, and the fourth layer 14 can be connected by thermal fusion bonding. This makes the connection between the layers more secure.
[0034] In this embodiment, the hardness of the sixth layer 16 is greater than that of the fifth layer 15. The hardness of the EVA material varies with the vinyl acetate (VA) content in the EVA material. In one embodiment, the vinyl acetate (VA) content in the EVA material can be adjusted as needed to adjust the hardness of the EVA material.
[0035] In this embodiment, the hardness of the sixth layer 16 is greater than that of the first layer 11.
[0036] In this embodiment, the cross-sections of the first layer 11, the second layer 12, the third layer 13, the fourth layer 14, the fifth layer 15, and the sixth layer 16 of the drinking pipe are all annular. It can be understood that the cross-sections of the first layer 11, the second layer 12, the third layer 13, the fourth layer 14, the fifth layer 15, and the sixth layer 16 of the drinking pipe can also be rectangular annular, triangular annular, or other shapes, and are not limited here.
[0037] In this embodiment, the first layer 11, made of food-grade PE material, is the water-passing layer, and the food-grade PE material meets relevant drinking water standard tests. The second layer 12, made of food-grade EVA material, has high flexibility, which can control the softness of the drinking pipe. The braided third layer 13 and the crocheted fourth layer 14 can increase the burst pressure of the drinking pipe and improve its pressure resistance and anti-expansion ability. The fifth layer 15, made of food-grade EVA material, makes the entire drinking pipe more flexible. The sixth layer 16, made of food-grade EVA material, makes the outer surface of the drinking pipe more comfortable to the touch, non-sticky, and can still maintain good tactile comfort, especially under outdoor ultraviolet radiation.
[0038] The drinking pipe in this embodiment can be manufactured using the following method:
[0039] S11, the first layer 11 and the second layer 12 are simultaneously extruded by extrusion molding, so that the second layer 12 covers the first layer 11.
[0040] S12, the third layer 13 is woven on the outside of the second layer 12;
[0041] S13, a fourth layer 14 is formed by weaving on the outside of the third layer 13.
[0042] S14, the first layer 11, the second layer 12, the third layer 13 and the fourth layer 14 that have been formed are heated and the adjacent layers are thermally fused and bonded.
[0043] S15, the fifth layer 15 and the sixth layer 16 are simultaneously extruded by extrusion molding, so that the sixth layer 16 covers the fifth layer 15 and the fifth layer 15 covers the fourth layer 14, thereby forming the above-mentioned drinking pipe.
[0044] S16, the formed drinking pipe is placed in a water tank for cooling.
[0045] It is understandable that drinking pipes can also be made in other ways, as long as they can form the aforementioned drinking pipe.
[0046] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A drinking water pipe, characterized in that, It includes a first layer (11), a second layer (12), a third layer (13), a fourth layer (14), a fifth layer (15), and a sixth layer (16) arranged sequentially from the inside out. The first layer (11) is a food-grade PE layer, the second layer (12), the fifth layer (15), and the sixth layer (16) are all food-grade EVA layers, the third layer (13) is a woven layer, and the fourth layer (14) is a crocheted layer.
2. The drinking pipe as described in claim 1, characterized in that, The thickness of the third layer (13) is less than the thickness of any one of the first layer (11), the second layer (12), the fifth layer (15), and the sixth layer (16); the thickness of the fourth layer (14) is less than the thickness of any one of the first layer (11), the second layer (12), the fifth layer (15), and the sixth layer (16).
3. The drinking pipe as described in claim 1, characterized in that, The thickness of the third layer (13) is 0.1 mm; and / or the thickness of the fourth layer (14) is 0.1 mm.
4. The drinking pipe as described in claim 1, characterized in that, The thickness of the first layer (11) is less than the thickness of the second layer (12); or the thickness of the fifth layer (15) is greater than the thickness of the sixth layer (16).
5. The drinking pipe as described in any one of claims 1-4, characterized in that, The thickness of the first layer (11) is 0.2 mm; the thickness of the second layer (12) is 1 mm; the thickness of the fifth layer (15) is 1 mm; and the thickness of the sixth layer (16) is 0.2 mm.
6. The drinking pipe as described in claim 1, characterized in that, Both the third layer (13) and the fourth layer (14) are woven from polyester yarn.
7. The drinking pipe as described in claim 1, characterized in that, Along the length of the drinking pipe, within the same length range, the number of grids in the third layer (13) is greater than the number of grids in the fourth layer (14).
8. The drinking pipe as described in claim 1, characterized in that, The third layer (13) has a diamond grid pattern, and the fourth layer (14) has an elliptical grid pattern.
9. The drinking pipe as described in claim 1, characterized in that, The extension direction of the grid lines of the third layer (13) intersects with the extension direction of the grid lines of the fourth layer (14).
10. The drinking pipe as described in claim 1, characterized in that, The hardness of the sixth layer (16) is greater than that of the fifth layer (15).