A PVC drainage pipe with good anti-aging and wear resistance
By using internal and external corrosion-resistant layers and precipitated hardened stainless steel layers in the drain pipe, and combining anti-aging and wear-resistant materials, the problem of aging and corrosion of drain pipes in long-term use and humid environments is solved, and higher heat, cold, ozone and wear-resistant properties are achieved.
Patent Information
- Application Number
- CN202420648926.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-01
AI Technical Summary
Existing drain pipes are prone to aging and corrosion in long-term use and humid environments, resulting in water leakage, and are prone to breaking under temperature changes and wear.
It adopts internal and external corrosion-resistant layers and precipitated hardened stainless steel layers, combining anti-aging and wear-resistant materials, such as acrylate rubber, polysulfide rubber, polymer polyethylene lining board and polyurethane TDI resin wear-resistant materials, to enhance the heat, cold, ozone and wear-resistant properties of the drain pipes.
Effectively prevent drain pipes from corroding and aging in humid environments, improve their wear resistance and durability, and avoid water leakage and cracking problems.
Smart Images
Figure CN222716155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drainage pipes, in particular to a PVC drainage pipe with good anti-aging and wear-resistant performance. Background Art
[0002] PVC pipe is a pipe made of polyvinyl chloride resin. After being treated with stabilizers and lubricants, PVC drainage pipe is made of sanitary polyvinyl chloride resin as the main raw material, with appropriate amounts of stabilizers, lubricants, fillers, color enhancers, etc., and is extruded by a plastic extruder and injection molded by an injection molding machine. It is made through processes such as cooling, curing, shaping, inspection, and packaging. PVC drainage pipe has the characteristics of smooth and flat inner and outer walls, and the friction coefficient of the pipe is small, the water flow is smooth, it is not easy to be blocked, and the maintenance workload is small. It is now widely used in indoor and outdoor rainwater drainage of buildings and industrial sewage discharge.
[0003] The existing drain pipes are exposed to the external environment for a long time due to long-term drainage work, and are prone to aging. In a humid environment, the drain pipes are prone to corrosion, forming small holes or cracks that lead to water leakage. At the same time, the temperature changes during the day and night or seasonal changes will cause the drain pipes to expand and contract, which can easily cause the drain pipes to crack and cause water leakage. In addition, the drain pipes are in the external environment for a long time, and the wear of the drain pipes is a normal phenomenon. The drain pipes become thinner and the water pipes rupture due to long-term wear. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a PVC drainage pipe with good anti-aging and wear-resistant performance, which has the advantages of anti-aging, wear-resistant, heat-resistant and cold-resistant, and solves the problems of the prior art.
[0005] The utility model provides the following technical solution: a PVC drainage pipe with good anti-aging and wear-resistant performance, comprising a water pipe body, the inner wall of the water pipe body is provided with an inner anti-corrosion layer, the inner wall of the inner anti-corrosion layer is provided with a precipitation hardened stainless steel layer, the outer surface of the water pipe body is provided with an outer anti-corrosion layer, the outer surface of the outer anti-corrosion layer is provided with an anti-aging part, and the outer surface of the anti-aging part is provided with a wear-resistant part.
[0006] Preferably, the anti-aging part comprises a first anti-aging layer arranged on the outer surface of the outer anti-corrosion layer, and a second anti-aging layer is arranged on the outer surface of the first anti-aging layer.
[0007] Preferably, the wear-resistant portion includes a first wear-resistant layer arranged on the outer surface of the second anti-aging layer, and the second wear-resistant layer is arranged on the outer surface of the first wear-resistant layer.
[0008] Preferably, the material of the first anti-aging layer is acrylic rubber, and the material of the second anti-aging layer is polysulfide rubber.
[0009] Preferably, the material of the first wear-resistant layer is a high-molecular polyethylene liner, and the material of the second wear-resistant layer is a polyurethane TDI resin type wear-resistant material.
[0010] Preferably, the materials of the inner anti-corrosion layer and the outer anti-corrosion layer are both composed of glass cloth and epoxy coal tar anti-corrosion topcoat, the epoxy coal tar anti-corrosion topcoat in the inner anti-corrosion layer is applied on the inner side of the glass cloth, and the epoxy coal tar anti-corrosion topcoat in the outer anti-corrosion layer is applied on the outer side of the glass cloth.
[0011] Preferably, the inner anti-corrosion layer of glass cloth is arranged on the inner wall of the water pipe body, and the outer anti-corrosion layer of glass cloth is arranged on the outer wall of the water pipe body.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The selection of acrylic rubber in the first anti-aging layer and polysulfide rubber in the second anti-aging layer work together to improve the heat resistance, cold resistance, ozone resistance, and electrical insulation of the drainage pipe. At the same time, they play a sealing role to prevent contact between the air and the pipe, avoiding light-oxidation aging and thermal-oxidation aging of the pipe.
[0014] 2. The selection of high molecular weight polyethylene lining in the first wear-resistant layer makes the drainage pipe highly wear-resistant. At the same time, the selection of polyurethane TDI resin wear-resistant material in the second wear-resistant layer can further improve the wear resistance of the pipeline by spraying it on the surface of the high molecular weight polyethylene lining. Because it can be constructed and cured at room temperature, and its spraying method is convenient for later maintenance.
[0015] 3. The glass cloth and epoxy coal tar anti-corrosion topcoat used in the inner and outer anti-corrosion layers ensure the isolation of the drainage pipe from the corrosive medium, avoiding the corrosion of the drainage pipe in a humid environment, forming small holes or cracks and causing water leakage.
[0016] 4. The setting of precipitation hardened stainless steel layer ensures that when water flows inside the drain pipe, the impact force generated by the water flow can protect the inner wall of the drain pipe. At the same time, the precipitation hardened stainless steel layer has high toughness and high corrosion resistance, which can provide preliminary protection for the inner wall of the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the anti-aging part of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the wear-resistant part of the utility model.
[0020] In the figure: 1. water pipe body; 2. inner anti-corrosion layer; 3. precipitation hardened stainless steel layer; 4. outer anti-corrosion layer; 5. anti-aging part; 51. first anti-aging layer; 52. second anti-aging layer; 6. wear-resistant part; 61. first wear-resistant layer; 62. second wear-resistant layer. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-Figure 3 A PVC drainage pipe with good anti-aging and wear resistance comprises a water pipe body 1, an inner wall of the water pipe body 1 is provided with an inner anti-corrosion layer 2, and an inner wall of the inner anti-corrosion layer 2 is provided with a precipitation hardened stainless steel layer 3, so as to ensure that when water flows inside the drainage pipe, the impact force generated by the flow of water can be protected by the precipitation hardened stainless steel layer 3, and at the same time, the precipitation hardened stainless steel layer 3 has high toughness and high corrosion resistance, which can provide preliminary protection for the inner wall of the water pipe, and the outer surface of the water pipe body 1 is provided with an outer anti-corrosion layer 4. The outer surface of the outer anti-corrosion layer 4 is provided with an anti-aging part 5, and the outer surface of the anti-aging part 5 is provided with a wear-resistant part 6. The anti-aging part 5 includes a first anti-aging layer 51 provided on the outer surface of the outer anti-corrosion layer 4, and the outer surface of the first anti-aging layer 51 is provided with a second anti-aging layer 52. The material of the first anti-aging layer 51 is acrylic rubber, which has excellent heat resistance, cold resistance and ozone resistance. The material of the second anti-aging layer 52 is polysulfide rubber, which has the characteristics of weather resistance, low air permeability and electrical insulation. The combined use of acrylic rubber and polysulfide rubber can effectively improve the heat resistance, cold resistance, ozone resistance, and electrical insulation of the pipeline, and at the same time play a sealing role to prevent contact with the pipeline in the air, avoiding light oxygen aging and thermal oxygen aging of the pipeline.
[0023] The wear-resistant part 6 includes a first wear-resistant layer 61 arranged on the outer surface of the second anti-aging layer 52, and a second wear-resistant layer 62 is arranged on the outer surface of the first wear-resistant layer 61. The material of the first wear-resistant layer 61 is a polymer polyethylene liner, and the material of the second wear-resistant layer 62 is a polyurethane TDI resin type wear-resistant material. The arranged polyurethane TDI resin type wear-resistant material has high wear resistance. Because it can be constructed and cured at room temperature, it can be sprayed on the surface of the polymer polyethylene liner to further improve the wear resistance of the pipeline. At the same time, its spraying method is convenient for later maintenance.
[0024] The materials of the inner anti-corrosion layer 2 and the outer anti-corrosion layer 4 are both composed of glass cloth and epoxy coal tar anti-corrosion topcoat. The epoxy coal tar anti-corrosion topcoat in the inner anti-corrosion layer 2 is applied on the inner side of the glass cloth, and the epoxy coal tar anti-corrosion topcoat in the outer anti-corrosion layer 4 is applied on the outer side of the glass cloth. The glass cloth in the inner anti-corrosion layer 2 is arranged on the inner wall of the water pipe body 1, and the glass cloth in the outer anti-corrosion layer 4 is arranged on the outer wall of the water pipe body 1. The arrangement of glass cloth and epoxy coal tar anti-corrosion topcoat in the inner anti-corrosion layer 2 can ensure that the epoxy coal tar anti-corrosion topcoat can play a waterproof role after water penetrates and precipitates the hardened stainless steel layer 3, and the arrangement of glass cloth further improves the overall waterproof performance; the arrangement of glass cloth and epoxy coal tar anti-corrosion topcoat in the outer anti-corrosion layer 4 can prevent moisture from penetrating into the interior of the pipeline, and the epoxy coal tar anti-corrosion topcoat itself is insoluble in water, and the paint film can remain tough under long-term immersion, thereby ensuring isolation from corrosive media.
[0025] Working principle: In the actual working process, the inner and outer walls of the drain pipe are protected from corrosion through the coordinated use of the inner anti-corrosion layer, the outer anti-corrosion layer and the precipitation hardened stainless steel layer. At the same time, the precipitation hardened stainless steel layer can also ensure that the inner wall of the drain pipe is protected under the impact of water flow. The setting of the anti-oxidation part avoids the drain pipe from light-oxidation aging and thermal-oxidation aging. The setting of the wear-resistant part ensures that the drain pipe has high wear resistance.
Claims
1. A PVC drainage pipe with good anti-aging and wear resistance, comprising a water pipe body (1), characterized in that: The inner wall of the water pipe body (1) is provided with an inner anti-corrosion layer (2), the inner wall of the inner anti-corrosion layer (2) is provided with a precipitation hardened stainless steel layer (3), the outer surface of the water pipe body (1) is provided with an outer anti-corrosion layer (4), the outer surface of the outer anti-corrosion layer (4) is provided with an anti-aging portion (5), and the outer surface of the anti-aging portion (5) is provided with a wear-resistant portion (6); The anti-aging part (5) comprises a first anti-aging layer (51) arranged on the outer surface of the outer anti-corrosion layer (4), and a second anti-aging layer (52) is arranged on the outer surface of the first anti-aging layer (51); The wear-resistant portion (6) comprises a first wear-resistant layer (61) arranged on the outer surface of the second anti-aging layer (52), and a second wear-resistant layer (62) is arranged on the outer surface of the first wear-resistant layer (61).
2. The PVC drainage pipe with good anti-aging and wear resistance according to claim 1, characterized in that: The material of the first anti-aging layer (51) is acrylic rubber, and the material of the second anti-aging layer (52) is polysulfide rubber.
3. The PVC drainage pipe with good anti-aging and wear resistance according to claim 1, characterized in that: The material of the first wear-resistant layer (61) is a high molecular polyethylene liner, and the material of the second wear-resistant layer (62) is a polyurethane TDI resin type wear-resistant material.
4. The PVC drainage pipe with good anti-aging and wear resistance according to claim 1, characterized in that: The materials of the inner anti-corrosion layer (2) and the outer anti-corrosion layer (4) are both composed of glass cloth and epoxy coal tar anti-corrosion topcoat. The epoxy coal tar anti-corrosion topcoat in the inner anti-corrosion layer (2) is applied on the inner side of the glass cloth, and the epoxy coal tar anti-corrosion topcoat in the outer anti-corrosion layer (4) is applied on the outer side of the glass cloth.
5. The PVC drainage pipe with good anti-aging and wear resistance according to claim 1, characterized in that: The glass cloth of the inner anti-corrosion layer (2) is arranged on the inner wall of the water pipe body (1), and the glass cloth of the outer anti-corrosion layer (4) is arranged on the outer wall of the water pipe body (1).