Antibacterial coating and self-cleaning film double-layer protection PPR antibacterial pipeline

Abstract

The utility model discloses an antibacterial coating and self-cleaning film double-layer protection PPR antibacterial pipeline, and belongs to the technical field of PPR antibacterial pipelines. Comprising a pipeline body, flanges are installed at the two ends of the pipeline body and fixedly connected through bolts, gaps are reserved between the end face of the pipeline body and the inner walls of the flanges, a connecting ring is installed at the gap of the inner wall of the flange located on the upper portion, and a sealing ring is installed on the top face of the connecting ring. A sealing seat is mounted in a gap of the inner wall of the lower flange, a sealing groove is formed in the bottom surface of the sealing seat, and the sealing ring and the sealing groove are clamped with each other; according to the technical scheme, the pipeline is convenient to mount and dismount through flange connection; a gap between the end face of the pipeline body and the inner wall of the flange provides space for installation of the connecting ring and the sealing seat. A clamping structure of the sealing ring and the sealing groove is used for primarily realizing sealing of a flange joint; the water swelling strip covers the joint and swells when encountering water, the gap is further filled, the sealing performance is enhanced, and liquid leakage is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of PPR antibacterial pipe technology, specifically to a PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane. Background Technology

[0002] Antibacterial PPR pipes are a new type of pipe material developed from traditional PPR pipes, widely used in building water supply and drainage, drinking water transportation, and other fields. Their core advantage lies in inhibiting bacterial growth on the inner wall of the pipe by adding antibacterial agents or applying an antibacterial coating, thus ensuring water quality safety. Compared to ordinary PPR pipes, antibacterial PPR pipes can effectively reduce the adhesion and reproduction of pathogenic microorganisms such as Escherichia coli and Staphylococcus aureus, making them particularly suitable for scenarios with high hygiene requirements, such as hospitals, schools, food processing plants, and household direct drinking water systems.

[0003] The connection methods for PPR antibacterial pipes mainly include:

[0004] Hot melt connection: The pipe and fitting are fused together by heating, but the addition of antibacterial agents may change the thermal properties of the materials, resulting in a decrease in the strength of the weld interface and the appearance of micro-cracks after long-term use.

[0005] Flange connection: Mechanical seal is achieved by using a sealing gasket, but the antibacterial coating may affect the fit between the gasket and the pipe, and the gasket itself may become a breeding ground for microorganisms.

[0006] Threaded connections: rely on thread sealant or PTFE tape, but the presence of an antibacterial layer may lead to insufficient friction between the sealing material and the pipe, causing loosening.

[0007] Regardless of the connection method used, antibacterial modification can negatively impact sealing performance. For example, the addition of nano-silver antibacterial agents can reduce the creep resistance of PPR materials, making the joints prone to plastic deformation under long-term pressure, leading to seal failure. Utility Model Content

[0008] The purpose of this invention is to provide a PPR antibacterial pipe with dual protection of antibacterial coating and self-cleaning membrane, so as to solve the problems mentioned in the background art.

[0009] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0010] A double-layer protective PPR antibacterial pipe with an antibacterial coating and a self-cleaning membrane includes a pipe body. Flanges are installed at both ends of the pipe body and are bolted together. A gap exists between the end face of the pipe body and the inner wall of the flange. A connecting ring is installed in the gap of the upper flange's inner wall, and a sealing ring is installed on the top surface of the connecting ring. A sealing seat is installed in the gap of the lower flange's inner wall, and a sealing groove is formed on the bottom surface of the sealing seat. The sealing ring and the sealing groove interlock. A water-swellable sealing strip is installed on the inner wall of the sealing seat, covering the joint between the sealing ring and the sealing groove. The flange connection facilitates the installation and disassembly of the pipe. The gap between the end face of the pipe body and the inner wall of the flange provides space for the installation of the connecting ring and the sealing seat. The interlocking structure of the sealing ring and the sealing groove initially achieves a seal at the flange connection. The water-swellable sealing strip covers the joint and expands upon contact with water, further filling the gap, enhancing the sealing performance, and effectively preventing liquid leakage.

[0011] Furthermore, the water-swellable sealing strip is annular, with its bottom extending beyond the bottom of the sealing seat. The outer side of the water-swellable sealing strip is adhered to the inner wall of the sealing seat using waterproof adhesive. The annular structure provides uniform sealing to the entire joint. The bottom extending beyond the bottom of the sealing seat ensures more comprehensive coverage of potential seepage paths. The waterproof adhesive ensures the sealing strip is firmly installed on the inner wall of the sealing seat, preventing it from easily falling off and guaranteeing the stability of the sealing effect.

[0012] Furthermore, rubber sealing rings are installed on both the inner and outer walls of the sealing ring. The rubber sealing rings are pressed against the side wall of the sealing groove. The rubber sealing rings have good elasticity. After installation, they are pressed against the side wall of the sealing groove to form multiple sealing barriers, which improves the reliability of the seal and reduces the possibility of liquid leakage from the gap between the sealing ring and the side wall of the sealing groove.

[0013] Furthermore, the width of the connecting ring is greater than the width of the sealing ring. The distance between the outer edge of the connecting ring and the outer edge of the sealing ring, and between the inner edge of the connecting ring and the inner edge of the sealing ring, is 3 to 6 millimeters. The wider design of the connecting ring provides more stable support for the sealing ring, making it less prone to displacement or deformation during installation and use. The 3 to 6 millimeter distance ensures the support strength of the connecting ring for the sealing ring, while avoiding structural looseness due to excessive distance or affecting the sealing effect due to insufficient distance.

[0014] Furthermore, a number of reinforcing ribs are installed on the outer side of the pipe body along the axial and circumferential directions, and the number of axial and circumferential reinforcing ribs are intersected and connected to form a mesh. The intersecting mesh of reinforcing ribs in the axial and circumferential directions enhances the overall structural strength and rigidity of the pipe body, improves the pipe's pressure resistance, reduces the deformation of the pipe when subjected to internal fluid pressure or external load, and extends the service life of the pipe.

[0015] Furthermore, the inner wall of the pipe body is coated with an antibacterial coating, which is a nano-silver ion antibacterial agent. The nano-silver ion antibacterial agent has strong antibacterial properties, which can effectively inhibit the growth and reproduction of bacteria on the inner wall of the pipe, prevent bacteria from forming a biofilm in the pipe, and ensure the safety of the water quality of the transported liquid. It is especially suitable for scenarios with high hygiene requirements, such as drinking water.

[0016] Furthermore, the outer wall of the pipe body is coated with a self-cleaning membrane layer, which is a fluorocarbon resin-based superhydrophobic membrane. The fluorocarbon resin-based superhydrophobic membrane has extremely high hydrophobic properties, making it difficult for dust, dirt and liquid to adhere to the outer wall of the pipe. Rainwater can form water droplets on the membrane surface and carry away dirt, thus achieving a self-cleaning function, reducing the maintenance work on the outer wall of the pipe, and preventing dirt accumulation from affecting the appearance and performance of the pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the antibacterial coating and self-cleaning membrane double-layer protection PPR antibacterial pipe facilitates the installation and disassembly of the pipe through flange connection; the gap between the pipe body end face and the inner wall of the flange provides space for the installation of the connecting ring and sealing seat; the interlocking structure of the sealing ring and the sealing groove initially achieves the sealing at the flange connection; the water-swellable sealing strip covers the joint, expands when exposed to water, further fills the gap, enhances the sealing performance, and effectively prevents liquid leakage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane disclosed in an embodiment of the present utility model;

[0019] Figure 2 This is an exploded structural diagram of the PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane disclosed in an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of structure A in the middle;

[0021] Figure 4 This is a bottom view of the double-layer protective PPR antibacterial pipe with antibacterial coating and self-cleaning membrane disclosed in an embodiment of the present utility model.

[0022] Figure 5 This is a cross-sectional structural diagram of the PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane disclosed in an embodiment of the present invention.

[0023] In the diagram: 1. Pipe body; 2. Reinforcing rib; 3. Flange; 4. Sealing ring; 5. Rubber sealing ring; 6. Sealing seat; 7. Water-swellable sealing strip; 8. Connecting ring; 9. Sealing groove; 10. Antibacterial coating. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning film, including a pipe body 1. Flanges 3 are installed at both ends of the pipe body 1 and are fixedly connected by bolts. A gap is left between the end face of the pipe body 1 and the inner wall of the flange 3. A connecting ring 8 is installed in the gap of the inner wall of the upper flange 3, and a sealing ring 4 is installed on the top surface of the connecting ring 8. A sealing seat 6 is installed in the gap of the inner wall of the lower flange 3, and a sealing groove 9 is formed on the bottom surface of the sealing seat 6. The sealing ring 4 and the sealing groove 9 interlock. A water-swellable sealing strip 7 is installed on the inner wall of the sealing seat 6, covering the joint between the sealing ring 4 and the sealing groove 9. During installation, the upper and lower flanges 3 are aligned and fixed with bolts. At this time, the connecting ring 8 in the upper flange 3 drives the sealing ring 4 to insert into the sealing groove 9 of the sealing seat 6 in the lower flange 3, forming an interlocking engagement. If water seepage occurs at the joint, the water-swellable sealing strip 7 will expand in volume upon contact with water, tightly fitting the joint and preventing water leakage.

[0026] As an embodiment of this utility model, the water-swellable waterstop strip 7 is further annular, with its bottom extending beyond the bottom of the sealing seat 6. The outer side of the water-swellable waterstop strip 7 is adhered to the inner wall of the sealing seat 6 with waterproof adhesive. When water penetrates into the joint between the inner wall of the sealing seat 6 and the sealing ring 4, the annular water-swellable waterstop strip 7 comes into contact with the water and expands rapidly. The portion extending beyond the bottom of the sealing seat 6 will fill more gap space after expansion, further blocking water flow. At the same time, the adhesive effect of the waterproof adhesive keeps the waterstop strip in the correct position, continuously performing its sealing function.

[0027] As an embodiment of this utility model, the inner and outer walls of the sealing ring 4 are further equipped with rubber sealing rings 5. The rubber sealing rings 5 ​​are pressed against the side wall of the sealing groove 9. When the flange 3 is fixed by bolts, the sealing ring 4 is inserted into the sealing groove 9. The rubber sealing ring 5 is compressed and undergoes elastic deformation, tightly fitting the inner and outer walls of the sealing groove 9. The elastic recovery force of the rubber generates continuous sealing pressure to prevent liquid leakage.

[0028] As an embodiment of this utility model, the width of the connecting ring 8 is greater than the width of the sealing ring 4. The distance between the outer edge of the connecting ring 8 and the outer edge of the sealing ring 4, and between the inner edge of the connecting ring 8 and the inner edge of the sealing ring 4, is 3 to 6 mm. The connecting ring 8 is installed in the gap of the inner wall of the upper flange 3. Its wider structure wraps around the edge of the sealing ring 4. When the flange 3 is subjected to the tightening force of the bolts, the connecting ring 8 will evenly transmit the force to the sealing ring 4, so that the sealing ring 4 is stably inserted into the sealing groove 9, maintaining the positional accuracy of the sealing ring 4 and ensuring the sealing performance.

[0029] As an embodiment of this utility model, further, a number of reinforcing ribs 2 are installed on the outer side of the pipe body 1 along the axial and circumferential directions, and the number of axial and circumferential reinforcing ribs 2 are cross-connected to form a mesh. The reinforcing ribs 2 increase the material distribution on the outer side of the pipe body 1, and distribute the pressure or tension on the pipe to the entire mesh structure. By using the cross-connection method, a stable support frame is formed, thereby improving the pipe's resistance to deformation and enabling it to maintain good structural stability under various working conditions.

[0030] As an embodiment of this utility model, the inner wall of the pipe body 1 is further coated with an antibacterial coating 10, which is a nano silver ion antibacterial agent. After the nano silver ion antibacterial agent is coated on the inner wall of the pipe, the silver ions will be slowly released. When they come into contact with bacteria, they will destroy the cell membrane and enzyme system of the bacteria, interfere with the metabolism and reproduction process of the bacteria, thereby achieving an antibacterial effect and continuously maintaining the cleanliness and hygiene of the inner wall of the pipe.

[0031] As one embodiment of this utility model, the outer wall of the pipe body 1 is further coated with a self-cleaning film layer. The self-cleaning film layer is a fluorocarbon resin-based superhydrophobic film. The microstructure and chemical properties of the superhydrophobic film surface give it extremely low surface energy, resulting in a large contact angle for liquids on its surface, making it difficult for liquids to adhere. When rainwater or other liquids fall on the outer wall of the pipe, they form water droplets that roll off under gravity, carrying away surface dust and dirt, thereby keeping the outer wall of the pipe clean.

[0032] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

Claims

1. A double-layer protective PPR antibacterial pipe with antibacterial coating and self-cleaning membrane, characterized in that, The system includes a pipe body (1), with flanges (3) installed at both ends of the pipe body (1), and the flanges (3) are fixedly connected by bolts. There is a gap between the end face of the pipe body (1) and the inner wall of the flange (3). A connecting ring (8) is installed in the gap of the inner wall of the upper flange (3), and a sealing ring (4) is installed on the top surface of the connecting ring (8). A sealing seat (6) is installed in the gap of the inner wall of the lower flange (3). A sealing groove (9) is opened on the bottom surface of the sealing seat (6). The sealing ring (4) and the sealing groove (9) are engaged with each other. A water-swellable sealing strip (7) is installed on the inner wall of the sealing seat (6), and the water-swellable sealing strip (7) covers the joint between the sealing ring (4) and the sealing groove (9).

2. The PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The water-swellable sealing strip (7) is annular, the bottom of the water-swellable sealing strip (7) extends beyond the bottom of the sealing seat (6), and the outer side of the water-swellable sealing strip (7) is adhered to the inner wall of the sealing seat (6) with waterproof adhesive.

3. The PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The inner and outer walls of the sealing ring (4) are both fitted with rubber sealing rings (5), and the rubber sealing rings (5) are pressed against the side wall of the sealing groove (9).

4. The PPR antibacterial pipe with dual protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The width of the connecting ring (8) is greater than the width of the sealing ring (4), and the distance between the outer edge of the connecting ring (8) and the outer edge of the sealing ring (4), and between the inner edge of the connecting ring (8) and the inner edge of the sealing ring (4) is 3 to 6 mm.

5. The PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The outer side of the pipe body (1) is provided with several reinforcing ribs (2) along the axial and circumferential directions, and the several axial and circumferential reinforcing ribs (2) are intersected and connected to form a mesh.

6. The PPR antibacterial pipe with dual protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The inner wall of the pipe body (1) is coated with an antibacterial coating (10), which is a nano silver ion antibacterial agent.

7. The PPR antibacterial pipe with double-layer protection of antibacterial coating and self-cleaning membrane according to claim 1, characterized in that, The outer wall of the pipe body (1) is coated with a self-cleaning membrane layer, which is a fluorocarbon resin-based superhydrophobic membrane.

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