Plastic pipe with protective liner

Abstract

The utility model discloses a dirty plastic pipe with protective lining, including dirty plastic pipe body, the both ends of dirty plastic pipe body all are provided with the connecting ring, and the periphery of dirty plastic pipe body is provided with four outward bulging's convex groove, the inside installation of dirty plastic pipe body has the lining, is provided with the flow guide rib on the lining inner wall, and the one end of lining is installed with sealing washer, the periphery of lining is provided with the convex strip of matching with convex groove, the inside of protective layer is provided with the anti -permeation layer. Through setting up fluorine plastic material's protective lining, the corrosion -resisting and wear -resisting performance of dirty plastic pipe has been improved significantly, has effectively prolonged the service life of pipeline, compared with traditional dirty plastic pipe, the service life can prolong 30% 50%. Protective lining and plastic pipe body between through hot melt adhesive layer bonding fixed, and in the pipe body end part sets up sealing washer and sealant and carries out sealing, has guaranteed the close connection between protective lining and plastic pipe body, prevents sewage leakage, has improved the sealing property and reliability of pipeline.

Description

Technical Field

[0001] This utility model relates to the field of sewage plastic pipe technology, specifically sewage plastic pipe with a protective inner lining. Background Technology

[0002] In sewage discharge systems, plastic pipes are widely used due to their corrosion resistance and low cost. However, sewage typically contains various impurities, acids, alkalis, and microorganisms. After prolonged use, the inner wall of these plastic pipes is prone to corrosion and wear, leading to a shortened pipe lifespan and even leaks. This not only affects the normal discharge of sewage but may also pollute the surrounding environment. Currently, some plastic pipes improve their protective capabilities by increasing the pipe wall thickness, but this increases material costs and pipe weight while offering limited protective effects. Therefore, those skilled in the art have developed plastic pipes with protective linings to address the problems mentioned in the background section. Utility Model Content

[0003] The purpose of this utility model is to provide a sewage plastic pipe with a protective liner. By setting the protective liner, the corrosion resistance and wear resistance of the sewage plastic pipe to sewage are improved, effectively extending the service life of the pipe, while reducing maintenance costs and environmental risks caused by pipe damage.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A waste plastic pipe with a protective liner includes a waste plastic pipe body, both ends of which are provided with connecting rings, and four outwardly raised grooves are provided around the perimeter of the waste plastic pipe body. An inner liner is installed inside the waste plastic pipe body, and a flow guiding rib is provided on the inner wall of the inner liner. A sealing ring is installed at one end of the inner liner. Raised strips matching the raised grooves are provided around the perimeter of the inner liner. The middle layer of the inner liner is a base layer. An elastic edge is provided on the outer side of the base layer. A protective layer is provided on the inner side of the base layer. An anti-seepage layer is provided on the inner side of the protective layer. A corrosion-resistant layer is provided on the inner side of the anti-seepage layer.

[0005] As a further embodiment of this utility model: the outermost edge of the sealing ring is provided with a pressing edge, one side of the pressing edge is provided with a threaded ring, one side of the threaded ring is provided with an embedding edge, and a rotating protrusion is provided on one end surface of the sealing ring.

[0006] As a further improvement of this utility model: the plastic pipe body is provided with a threaded groove that matches the threaded ring, and a grooved ring corresponding to the embedded edge is provided at the innermost part of the threaded groove.

[0007] As a further embodiment of this utility model: the sewage pipe body is a component made of polyethylene plastic, and the inner lining base layer is a component made of fluoroplastic.

[0008] As a further embodiment of this utility model: the elastic edge is a component made of rubber, the protective layer is a component made of glass fiber reinforced plastic, the impermeable layer is a component made of vinyl ester resin, and the corrosion-resistant layer is a component made of polytetrafluoroethylene.

[0009] As a further improvement of this utility model, the inner wall of the waste plastic pipe and the inner lining are bonded and fixed together by a hot melt adhesive layer.

[0010] As a further embodiment of this invention: the pressing edge is a component made of rubber, with an inner diameter the same as the inner diameter of the lining and an outer diameter the same as the outer diameter of the plastic pipe body. As a further embodiment of this invention: multiple guide ribs are provided, extending axially along the pipe body of the lining, and the cross-section of each guide rib is triangular.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a protective lining of fluoroplastic material, the corrosion resistance and wear resistance of sewage plastic pipes are significantly improved, effectively extending the service life of the pipes. Compared with traditional sewage plastic pipes, the service life can be extended by 30%-50%.

[0012] 2. The protective liner is bonded and fixed to the plastic pipe body with a hot melt adhesive layer, and a sealing ring and sealant are installed at the end of the pipe body for sealing, which ensures a tight connection between the protective liner and the plastic pipe body, prevents sewage leakage, and improves the sealing performance and reliability of the pipeline.

[0013] 3. The guide ribs set on the inner wall of the protective lining can change the flow state of sewage, enhance the self-cleaning ability of the pipeline, reduce dirt accumulation, and reduce pipeline maintenance costs. Attached Figure Description

[0014] Figure 1 A schematic diagram of a contaminated plastic pipe with a protective liner; Figure 2 A schematic diagram of the sealing ring in a contaminated plastic pipe with a protective liner; Figure 3 This is a schematic diagram of the inner lining in a contaminated plastic pipe with a protective inner lining.

[0015] In the diagram: 1. Sewage-resistant plastic pipe body; 2. Raised groove; 3. Connecting ring; 4. Rotating protrusion; 5. Fixing hole; 6. Inner lining; 7. Guide rib; 8. Sealing ring; 9. Pressing edge; 10. Threaded ring; 11. Embedded edge; 12. Raised strip; 13. Elastic edge; 14. Inner lining base layer; 15. Protective layer; 16. Seepage-proof layer; 17. Corrosion-resistant layer. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-3 In this embodiment of the utility model, it mainly consists of a plastic pipe body 1 and an inner lining 6. The sewage plastic pipe body 1 is made of polyethylene plastic, and both ends are equipped with connecting rings 3 to facilitate the connection and installation between pipes; four outwardly raised grooves 2 are provided around the pipe body, which match the raised strips 12 around the inner lining 6 to enhance the connection stability between the sewage plastic pipe body 1 and the inner lining 6. The inner wall of the lining 6 is provided with multiple flow guide ribs 7 that extend along the pipe axis and have a triangular cross section. The flow guide ribs 7 can change the flow state of sewage in the pipe, so that the sewage forms a spiral flow, reduce the adhesion of sewage on the pipe wall, further improve the self-cleaning ability of the pipe, and reduce the impact of dirt accumulation on the protective lining. A sealing ring 8 is installed at one end of the inner liner 6. A pressure edge 9 is provided on the outermost edge of the sealing ring 8. The pressure edge 9 is made of rubber and has the same inner diameter as the inner diameter of the inner liner 6 and the same outer diameter as the outer diameter of the sewage plastic pipe body 1. A rotating protrusion 4 is provided on the surface of one end of the sealing ring 8. The rotating protrusion 4 facilitates the installation of the sealing ring 8 and can effectively prevent sewage leakage. A threaded ring 10 is provided on one side of the pressure edge 9, and an embedded edge 11 is provided on one side of the threaded ring 10. A threaded groove matching the threaded ring 10 is provided on the sewage plastic pipe body 1. A groove ring corresponding to the embedded edge 11 is provided at the innermost part of the threaded groove. Through threaded connection and embedded fit, the connection strength between the inner liner 6 and the sewage plastic pipe body 1 is further strengthened. The gap between the inner liner 6 and the sewage plastic pipe body 1 is blocked by the sealing ring 8 to prevent sewage from seeping into the gap between the protective inner liner 6 and the sewage plastic pipe body 1 from the end of the pipe body, thus ensuring the protective effect of the protective inner liner. The middle layer of the lining 6 is a fluoroplastic base layer 14, with an elastic rubber edge 13 on the outside for cushioning and shock absorption. The inner side is sequentially composed of a glass fiber reinforced plastic protective layer 15, a vinyl ester resin impermeable layer 16, and a polytetrafluoroethylene corrosion-resistant layer 17. These layers work synergistically to significantly improve the pipe's protective performance. Furthermore, the inner wall of the plastic pipe body 1 is bonded to the lining 6 using a hot-melt adhesive layer to ensure a tight bond.

[0018] In the actual production process, the sewage plastic pipe body 1 and the inner lining 6 are first processed according to the design requirements. The sewage plastic pipe body 1 is made of polyethylene plastic through injection molding process, and the connecting ring 3, raised groove 2, threaded groove and groove ring are reserved during the molding process. During the fabrication of the inner lining 6, the corrosion-resistant layer 17, the seepage-proof layer 16, the protective layer 15, the inner lining base layer 14, and the elastic edge 13 are fabricated in sequence, and the flow guide rib 7, the raised strip 12, the sealing ring 8, the pressing edge 9, the threaded ring 10, and the embedded edge 11 are set at the corresponding positions. The prepared inner liner 6 is bonded to the inside of the waste plastic pipe body 1 using a hot melt adhesive layer, so that the raised strip 12 is embedded in the raised groove 2, the threaded ring 10 is screwed into the threaded groove, and the embedded edge 11 is embedded in the grooved ring, ensuring a firm connection. Finally, the waste plastic pipe with the protective inner liner is connected to other pipes through the connecting ring 3 and applied to the sewage discharge system.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A contaminated plastic pipe with a protective inner lining, the contaminated plastic pipe body (1) being characterized in that, Both ends of the sewage plastic pipe body (1) are provided with connecting rings (3), and four outwardly raised grooves (2) are provided around the sewage plastic pipe body (1). The sewage plastic pipe body (1) is equipped with an inner lining (6). The inner wall of the inner lining (6) is provided with a flow guide rib (7), and a sealing ring (8) is installed at one end of the inner lining (6). The inner lining (6) is provided with raised strips (12) that match the raised grooves (2) around its perimeter. The middle layer of the inner lining (6) is an inner lining base layer (14). The outer side of the inner lining base layer (14) is provided with an elastic edge (13), and the inner side of the inner lining base layer (14) is provided with a protective layer (15). The inner side of the protective layer (15) is provided with a seepage-proof layer (16), and the inner side of the seepage-proof layer (16) is provided with a corrosion-resistant layer (17).

2. The waste plastic pipe with a protective liner according to claim 1, characterized in that, The outermost edge of the sealing ring (8) is provided with a pressing edge (9), a threaded ring (10) is provided on one side of the pressing edge (9), an embedded edge (11) is provided on one side of the threaded ring (10), and a rotating protrusion (4) is provided on one end surface of the sealing ring (8).

3. The waste plastic pipe with a protective liner according to claim 2, characterized in that, The plastic pipe body (1) is provided with a threaded groove that matches the threaded ring (10), and a grooved ring corresponding to the embedded edge (11) is provided at the innermost part of the threaded groove.

4. The contaminated plastic pipe with a protective liner according to claim 1, characterized in that, The waste plastic pipe body (1) is a component made of polyethylene plastic, and the inner lining base layer (14) is a component made of fluoroplastic.

5. The contaminated plastic pipe with a protective liner according to claim 1, characterized in that, The elastic edge (13) is a component made of rubber, the protective layer (15) is a component made of glass fiber reinforced plastic, the impermeable layer (16) is a component made of vinyl ester resin, and the corrosion resistant layer (17) is a component made of polytetrafluoroethylene.

6. The contaminated plastic pipe with a protective liner according to claim 1, characterized in that, The inner wall of the plastic pipe body (1) and the inner lining (6) are bonded and fixed together by a hot melt adhesive layer.

7. The waste plastic pipe with a protective liner according to claim 2, characterized in that, The pressing edge (9) is a component made of rubber, and its inner diameter is the same as that of the inner lining (6), and its outer diameter is the same as that of the plastic pipe body (1).

8. The contaminated plastic pipe with a protective liner according to claim 1, characterized in that, Multiple guide ribs (7) are provided and extend along the axial direction of the inner liner (6) tube body. The cross section of the guide ribs (7) is triangular.

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