Heat-preservation antibacterial uvioresistant pipe fitting

Abstract

The utility model relates to the field of plastic pipe fittings, in particular to a heat preservation antibacterial uvioresistant pipe fitting, which is used for improving the heat preservation effect of the plastic pipe fittings and comprises a pipe fitting body, the pipe fitting body is provided with a plurality of heat preservation units sequentially connected along the axial direction, and each heat preservation unit comprises an antibacterial inner layer and a protective outer layer. Knurled protrusions are arranged on the outer surfaces of the two axial sides of the antibacterial inner layer in a protruding mode, the antibacterial inner layer is sleeved with the protective outer layer, the knurled protrusions are fixedly connected with the antibacterial inner layer to form connecting areas, and a vacuum layer is formed between the antibacterial inner layer and the protective outer layer and located between the two connecting areas. The axial outer end, located in the connecting area, of the antibacterial inner layer and the axial outer end of the protective outer layer are arranged in a closed mode, and a protruding ring is arranged on the inner surface of the axial middle of the antibacterial inner layer in a protruding mode.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe fittings, and in particular to a heat-insulating, antibacterial and UV-resistant pipe fitting. Background Technology

[0002] Pipes are components of pipeline systems used to transport fluids, gases, or solids. They are commonly found in construction, industry, agriculture, mining, and other fields. These pipes can be classified into various types based on their application, materials, and manufacturing processes. Common pipe types include metal pipes (steel, copper, aluminum, galvanized), plastic pipes (PVC, PE, PP), composite pipes, glass pipes, ceramic pipes, and carbon fiber composite pipes). These pipe types have different characteristics and applications, and selecting the appropriate pipe type requires consideration of project requirements, environmental conditions, and the transported medium. Currently, most tap water supply systems use plastic pipes, with matching fittings used to connect them.

[0003] With social development and technological progress, people are increasingly pursuing a higher quality of life, leading to greater functional requirements for household plastic pipes. For example, patent announcement number CN204387502U discloses a polyethylene antibacterial pipe with barrier function. This pipe has a three-layer composite structure, including a polyethylene main layer, an outer barrier layer on the outer surface of the polyethylene main layer, and a nano-silver ion antibacterial layer on the inner surface. The outer barrier layer, the polyethylene main layer, and the nano-silver ion antibacterial layer are extruded using a three-layer co-extrusion process. By setting the outer barrier layer on the outer surface of the polyethylene main layer and the nano-silver ion antibacterial layer on the inner surface, and manufacturing it using a three-layer co-extrusion method, it not only possesses the advantages of ordinary plastic antibacterial water supply pipes, such as strong corrosion resistance, easy hot-melt connection, and low engineering cost, but also the ability to kill bacteria, fungi, and molds in water supply pipes, with significant antibacterial effects against Escherichia coli, Staphylococcus aureus, and Candida albicans, and long-lasting antibacterial effects. Furthermore, it has the function of preventing liquids from the external environment from seeping into the pipe, greatly improving the safety performance of the transported medium.

[0004] The above-mentioned pipes are solid composite structures extruded by a three-layer co-extrusion process. The fittings are also applicable. However, during long-term use, especially under conditions of large temperature differences, there is significant heat loss and the insulation effect is not ideal. Utility Model Content

[0005] Therefore, in view of the above problems, this utility model provides a heat-insulating, antibacterial and UV-resistant pipe fitting, which mainly solves the problem of poor heat insulation effect in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat-insulating, antibacterial, and UV-resistant pipe fitting includes a pipe body with a plurality of heat-insulating units connected sequentially along the axial direction. Each heat-insulating unit includes an antibacterial inner layer and a protective outer layer. The outer surfaces of both sides of the antibacterial inner layer are provided with knurled protrusions. The protective outer layer is sleeved on the outside of the antibacterial inner layer and is fixedly connected to the antibacterial inner layer at the knurled protrusions to form a connection area. A vacuum layer is formed between the antibacterial inner layer and the protective outer layer and between the two connection areas. The outer axial end of the antibacterial inner layer located in the connection area is closed to the outer axial end of the protective outer layer. A raised ring is provided on the inner surface of the middle part of the antibacterial inner layer.

[0008] Furthermore, the antibacterial inner layer and the protective outer layer are fixedly connected at the connection area by local melting bonding or mechanical interlocking, so that a gap is maintained between the two except for the connection area to form a vacuum layer.

[0009] Furthermore, the vacuum layer is a closed cavity extending axially along the pipe body, with its two ends sealed and enclosed by the axial outer ends of two connecting areas.

[0010] Furthermore, the knurled protrusions are semi-circular ribs continuously arranged along the circumference, and are located in the antibacterial inner layer and near the axial sides, and are fixed to the protective outer layer by hot melt bonding to form the connection area.

[0011] Furthermore, the vacuum layer forms a closed annular cavity between two adjacent connection areas, and its length extending along the axial direction of the pipe body is 40mm to 500mm.

[0012] Furthermore, the protective outer layer includes a double-layer structure, with an inner layer being an anti-ultraviolet layer and an outer layer being a wear-resistant protective layer. The two layers are tightly bonded together and are fitted together on the outside of the antibacterial inner layer.

[0013] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This heat-insulating, antibacterial, and UV-resistant pipe fitting, by designing the pipe fitting body as being composed of multiple heat-insulating units connected sequentially along the axial direction, each heat-insulating unit includes an antibacterial inner layer and a protective outer layer, with a vacuum layer formed between the two, effectively reduces heat loss caused by conduction through the pipe wall, and significantly improves the heat insulation performance of the pipe fitting; at the same time, the antibacterial inner layer can inhibit the growth of bacteria in the transported medium, ensuring water quality safety, while the protective outer layer provides protection against the external environment. Furthermore, the knurled raised structure not only enhances the stability of the interlayer connection, but also improves the connection strength between the antibacterial inner layer and the protective outer layer. The overall structure takes into account heat insulation, antibacterial properties, and structural strength; the provided raised ring can play a supporting role in subsequent welding, and in water flow, it is used to enhance the water flow disturbance inside the pipe fitting body, inhibit biofilm formation, and improve structural rigidity. Attached Figure Description

[0014] Figure 1This is a front view structural diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a front view structural diagram of the heat preservation unit in an embodiment of this utility model;

[0016] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0017] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0018] Figure 5 yes Figure 4 A magnified view of a section at point E in the middle;

[0019] Figure 6 yes Figure 2 A schematic diagram of the cross-sectional structure at the CC section;

[0020] Figure 7 yes Figure 6 A magnified view of a section at point F in the middle;

[0021] Figure 8 yes Figure 2 Schematic diagram of the cross-sectional structure at point DD;

[0022] Figure 9 yes Figure 8 A magnified view of a section at point G.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fitting body; 2. Knurled protrusions; 3. Connection area; 4. Vacuum layer; 5. Raised ring; 11. Antibacterial inner layer; 12. Protective outer layer; 20. Semi-circular raised ribs; 100. Insulation unit. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] The embodiment of this utility model is as follows:

[0027] refer to Figures 1 to 9As shown, a heat-insulating, antibacterial, and UV-resistant pipe fitting includes a pipe fitting body 1. The pipe fitting body 1 has a plurality of heat-insulating units 100 connected sequentially along the axial direction. Each heat-insulating unit 100 includes an antibacterial inner layer 11 and a protective outer layer 12. The outer surfaces of both sides of the antibacterial inner layer 11 are provided with knurled protrusions 2. The protective outer layer 12 is sleeved on the outside of the antibacterial inner layer 11 and is fixedly connected to the antibacterial inner layer 11 at the knurled protrusions 2 to form a connection area 3. A vacuum layer 4 is formed between the antibacterial inner layer 11 and the protective outer layer 12 and between the two connection areas 3. The outer axial end of the antibacterial inner layer 11 located in the connection area 3 is closed to the outer axial end of the protective outer layer 12. The inner surface of the middle part of the antibacterial inner layer 11 is provided with a protruding ring 5.

[0028] This thermal insulation, antibacterial, and UV-resistant pipe fitting is designed with the pipe body 1 consisting of multiple insulation units 100 connected sequentially along the axial direction. Each insulation unit 100 includes an antibacterial inner layer 11 and a protective outer layer 12, with a vacuum layer 4 formed between them. This effectively reduces heat loss caused by conduction through the pipe wall, significantly improving the insulation performance of the pipe fitting. At the same time, the antibacterial inner layer 11 can inhibit the growth of bacteria in the transported medium, ensuring water quality safety, while the protective outer layer 12 provides protection against the external environment. Furthermore, the knurled protrusions 2 structure not only enhances the stability of the interlayer connection but also improves the connection strength between the antibacterial inner layer 11 and the protective outer layer 12. The overall structure takes into account insulation, antibacterial properties, and structural strength. The protruding rings 5 ​​can provide support during subsequent welding and enhance the internal water flow disturbance of the pipe body 1 during water flow, inhibiting biofilm formation and improving structural rigidity.

[0029] Specifically, the antibacterial inner layer 11 and the protective outer layer 12 are fixedly connected at the connection area 3 by partial fusion bonding or mechanical interlocking, preferably by fusion bonding, so that a gap is maintained between the two except for the connection area 3 to form a vacuum layer 4. The fixation of the antibacterial inner layer 11 and the protective outer layer 12 at the connection area 3 by partial fusion bonding or mechanical interlocking ensures that the connection is firm and reliable, and also ensures that the gap is maintained in the non-connection area to form a complete vacuum layer 4. This avoids the vacuum insulation effect being damaged by large-area bonding, thereby maximizing the heat preservation performance while ensuring the structural integrity. Furthermore, the vacuum layer 4 is a closed cavity extending axially along the pipe body 1. Its two ends are respectively sealed and enclosed by the axial outer ends of the two connection areas 3. The vacuum layer 4 is constructed as a closed cavity extending axially and sealed and enclosed by the axial outer ends of the two connection areas 3, so that the vacuum layer 4 completely isolates the outside air and moisture, prevents heat convection and heat conduction, and further improves the heat preservation efficiency. This closed structure can also maintain the vacuum state for a long time, ensuring the long-term stability of the heat preservation effect.

[0030] Meanwhile, the knurled protrusions 2 are semi-circular ribs 20 continuously arranged along the circumference. They are located in the antibacterial inner layer 11 and near the axial sides, and are fixed to the protective outer layer 12 by hot melt bonding to form the connection area 3. This not only increases the contact area between the antibacterial inner layer 11 and the protective outer layer 12 and improves the firmness of the hot melt bonding, but also reduces stress concentration due to the semi-circular design, avoiding cracking at the connection due to thermal expansion and contraction or external force during use, thereby improving the overall durability and sealing reliability of the pipe body 1.

[0031] In this embodiment, the vacuum layer 4 forms a closed annular cavity between two adjacent connection areas 3, and its length extending along the axial direction of the pipe body 1 is 40mm to 500mm, preferably 100mm. This ensures that the vacuum insulation section is long enough to achieve good heat preservation effect, while avoiding increased manufacturing difficulty or vacuum seal failure due to excessive length of a single section. This size range takes into account process feasibility, structural strength and heat preservation performance, and is suitable for the tap water transportation needs under different working conditions.

[0032] Furthermore, the protective outer layer 12 includes a double-layer structure, with an inner layer being an anti-ultraviolet layer and an outer layer being a wear-resistant protective layer. The two layers are tightly bonded together and are fitted over the antibacterial inner layer. The anti-ultraviolet layer can effectively block the aging effect of ultraviolet rays in sunlight on the internal materials of the pipe fitting (especially the plastic substrate), thus extending its service life. The wear-resistant protective layer on the outer layer enhances the pipe fitting's resistance to external mechanical damage, friction, and environmental erosion, making it particularly suitable for outdoor or complex laying environments, and significantly improving the overall weather resistance and service life of the pipe fitting.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A heat-insulating, antibacterial, and UV-resistant pipe fitting, characterized in that: The device includes a pipe body, which has several insulation units connected sequentially along the axial direction. Each insulation unit includes an antibacterial inner layer and a protective outer layer. The outer surfaces of both sides of the antibacterial inner layer are provided with knurled protrusions. The protective outer layer is sleeved on the outside of the antibacterial inner layer and is fixedly connected to the antibacterial inner layer at the knurled protrusions to form a connection area. A vacuum layer is formed between the antibacterial inner layer and the protective outer layer and between the two connection areas. The outer axial end of the antibacterial inner layer located in the connection area is closed to the outer axial end of the protective outer layer. The inner surface of the middle part of the antibacterial inner layer is provided with a raised ring.

2. The heat-insulating, antibacterial, and UV-resistant pipe fitting according to claim 1, characterized in that: The antibacterial inner layer and the protective outer layer are fixedly connected at the connection area by local melting bonding or mechanical interlocking, so that a gap is maintained between the two except for the connection area to form a vacuum layer.

3. The heat-insulating, antibacterial, and UV-resistant pipe fitting according to claim 2, characterized in that: The vacuum layer is a closed cavity extending axially along the pipe body, with its two ends sealed by the axial outer ends of two connecting areas.

4. The heat-insulating, antibacterial, and UV-resistant pipe fitting according to any one of claims 1 to 3, characterized in that: The knurled protrusions are semi-circular ribs continuously arranged along the circumference. They are located in the antibacterial inner layer and near the axial sides, and are fixed to the protective outer layer by hot-melt bonding to form the connection area.

5. The heat-insulating, antibacterial, and UV-resistant pipe fitting according to claim 4, characterized in that: The vacuum layer forms a closed annular cavity between two adjacent connection areas, and its length extending along the axial direction of the pipe body is 40mm to 500mm.

6. The heat-insulating, antibacterial, and UV-resistant pipe fitting according to claim 5, characterized in that: The protective outer layer has a double-layer structure, with an inner layer that is UV resistant and an outer layer that is wear-resistant. The two layers are tightly bonded together and are fitted over the outside of the antibacterial inner layer.

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