Multi-layer co-extrusion PPR water supply composite pipe

Abstract

The utility model relates to the technical field of home decoration pipes, and discloses a multi-layer co-extrusion PPR water supply composite pipe which comprises a composite water supply pipe body, the composite water supply pipe body comprises a wear-resisting and impact-resisting composite layer, and a compression-resisting and toughening composite layer is fixedly installed on the inner wall of the wear-resisting and impact-resisting composite layer. The polyethylene wear-resistant layer and the polyurethane wear-resistant layer on the wear-resistant and impact-resistant composite layer have good impact resistance, so that the whole pipe cannot crack when facing the impact of water flow or external factors, the wear-resistant composite pipe also has good wear resistance, the wear-resistant property of the whole composite water supply pipe can be improved, and the service life of the composite water supply pipe is prolonged. According to the composite water supply pipe, water leakage caused by external abrasion of the composite wear-resistant layer is avoided, the composite compression-resistant toughening layer on the compression-resistant toughening composite layer has a good compression-resistant toughening effect, the composite water supply pipe can bear high water pressure and cannot be broken, and the service life of the composite water supply pipe is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of home decoration pipes, in particular to a multi-layer co-extruded PPR water supply composite pipe. Background Art

[0002] PPR pipe is the abbreviation of PPR pipe, also known as random copolymer polypropylene pipe. It adopts hot-melt welding, has special welding and cutting tools, and has high plasticity. The price is also very economical. With the addition of an insulation layer, the thermal insulation performance is better, the pipe wall is also smooth, and the joints of the inner and outer threads are not included. It is generally used for embedded walls or deep well pre-buried pipes. PPR pipes are moderately priced, stable in performance, heat-resistant and heat-insulating, corrosion-resistant, smooth in the inner wall without scaling, safe and reliable pipeline systems, and impermeable, but the construction technology requirements are high, and special tools and professionals are required for construction to ensure the safety of the system.

[0003] However, the outer layer of this type of pipe has poor wear resistance and impact resistance, weak overall pressure resistance, and insufficient toughness. It is prone to rupture and leakage when facing high pressure. The overall service life is low under harsh environments such as high pressure. Once rupture and leakage occur, the embedded wall must be excavated, resulting in high subsequent maintenance costs.

[0004] To this end, we propose a multi-layer co-extruded PPR water supply composite pipe. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a multi-layer co-extruded PPR water supply composite pipe.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-layer co-extruded PPR water supply composite pipe, including a composite water supply pipe, wherein the composite water supply pipe includes a wear-resistant and impact-resistant composite layer, the inner wall of the wear-resistant and impact-resistant composite layer is fixedly installed with a compression-resistant and toughened composite layer, the inner wall of the compression-resistant and toughened composite layer is fixedly installed with an inner pipe layer, the wear-resistant and impact-resistant composite layer includes a polyethylene wear-resistant layer, and the inner wall of the polyethylene wear-resistant layer is fixedly connected to the outer wall of the compression-resistant and toughened composite layer, the outer wall of the polyethylene wear-resistant layer is fixedly installed with a polyurethane wear-resistant layer, the compression-resistant and toughened composite layer includes a PPR main layer, and the inner wall of the PPR main layer is fixedly connected to the outer wall of the inner pipe layer, the outer wall of the PPR main layer is fixedly installed with a composite compression-resistant and toughened layer, the composite compression-resistant and toughened layer includes a high-density polyethylene toughening layer, and the inner wall of the high-density polyethylene toughening layer is fixedly connected to the outer wall of the PPR main layer, the outer wall of the high-density polyethylene toughening layer is fixedly installed with a polypropylene toughening layer, and the outer wall of the polypropylene toughening layer is fixedly connected to the inner wall of the polyoxymethylene resin impact-resistant layer.

[0007] Preferably, the diameter of the composite water supply pipe is dn25, and the wall thickness of the composite water supply pipe is 4.2 mm.

[0008] Preferably, the wall thickness of the wear-resistant and impact-resistant composite layer is 1.68 mm.

[0009] Preferably, the wall thickness of the compressive toughening composite layer is 1.68 mm.

[0010] Preferably, the wall thickness of the inner tube layer is 0.84 mm.

[0011] Preferably, the inner tube layer is made of food-grade polypropylene material with added silver ions, wherein the content of silver ions is 0.2%.

[0012] Preferably, the material of the inner tube layer is a hydrophobic material imitating the non-smooth surface structure of butterfly wings.

[0013] Beneficial Effects

[0014] The utility model provides a multi-layer co-extruded PPR water supply composite pipe. It has the following beneficial effects:

[0015] (1) This multi-layer co-extruded PPR water supply composite pipe is provided with a wear-resistant and impact-resistant composite layer and a compressive toughening composite layer. The polyethylene wear-resistant layer and the polyurethane wear-resistant layer on the wear-resistant and impact-resistant composite layer have good impact resistance, which can prevent the entire pipe from cracking when facing the impact of water flow or external factors. It also has good wear resistance, which can improve the wear resistance of the entire composite water supply pipe and avoid leakage caused by external wear of the composite wear-resistant layer. The composite compressive toughening layer on the compressive toughening composite layer has good compressive toughening effect, which can enable the composite water supply pipe to withstand higher water pressure without cracking, thereby further improving the service life of the composite water supply pipe.

[0016] (2) The multi-layer co-extruded PPR composite water supply pipe has an inner pipe layer. The silver ions in the inner pipe layer can effectively inhibit and fight bacteria in the water, thereby preventing a large number of bacteria from growing on the inner wall of the composite water supply pipe and preventing the water quality from being contaminated by bacteria.

[0017] (3) The multi-layer co-extruded PPR composite water supply pipe has an inner pipe layer. The food-grade polypropylene material in the inner pipe layer has a certain antibacterial effect, which further improves the antibacterial ability of the entire composite water supply pipe.

[0018] (4) This multi-layer co-extruded PPR water supply composite pipe has an inner pipe layer. The material of the inner pipe layer is a hydrophobic material with a non-smooth surface structure imitating butterfly wings. It can effectively reduce water flow resistance, increase water flow and reduce pipe wall attachments, so that water can flow smoothly in the pipe, further avoiding the growth of bacteria. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the front side of the utility model;

[0020] Figure 2 It is a schematic diagram of the right wall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the right wall structure of the wear-resistant and impact-resistant composite layer of the utility model;

[0022] Figure 4 It is a schematic diagram of the right wall structure of the compressive toughening composite layer of the utility model.

[0023] Legend: 10. Composite water supply pipe; 11. Wear-resistant and impact-resistant composite layer; 12. Compression-resistant and toughened composite layer; 13. Inner pipe layer; 18. Polyethylene wear-resistant layer; 19. Polyurethane wear-resistant layer; 20. PPR main layer; 21. Composite compression-resistant and toughened layer; 22. High-density polyethylene toughened layer; 23. Polypropylene toughened layer. DETAILED DESCRIPTION

[0024] Embodiment 1: A multi-layer co-extruded PPR water supply composite pipe, such as Figure 1 - Figure 2 As shown, the composite water supply pipe 10 includes a wear-resistant and impact-resistant composite layer 11, the inner wall of the wear-resistant and impact-resistant composite layer 11 is fixedly installed with a compression-resistant and toughened composite layer 12, the inner wall of the compression-resistant and toughened composite layer 12 is fixedly installed with an inner tube layer 13, the diameter of the composite water supply pipe 10 is dn25, the wall thickness of the composite water supply pipe 10 is 4.2mm, the wall thickness of the inner tube layer 13 is 0.84mm, and the material of the inner tube layer 13 is food-grade polypropylene material with added silver ions, wherein the content of silver ions is 0.2%. By setting the wear-resistant and impact-resistant composite layer 11 and the compression-resistant and toughened composite layer 12, the wear-resistant and impact-resistant composite pipe 10 is The polyethylene wear-resistant layer 18 and the polyurethane wear-resistant layer 19 on the impact composite layer 11 have good impact resistance, which can prevent the entire pipe from cracking when facing the impact of water flow or external factors, and also have good wear resistance, which can improve the wear resistance of the entire composite water supply pipe 10, and avoid the composite wear-resistant layer 15 from being worn by the outside world and causing water leakage. The composite compressive toughening layer 21 on the compressive toughening composite layer 12 has good compressive toughening effect, which can enable the composite water supply pipe 10 to withstand higher water pressure without cracking, further improving the service life of the composite water supply pipe 10.

[0025] Embodiment 2: Based on Embodiment 1, Figure 3As shown, the wear-resistant and impact-resistant composite layer 11 includes a polyethylene wear-resistant layer 18, and the inner wall of the polyethylene wear-resistant layer 18 is fixedly connected to the outer wall of the compression-resistant toughening composite layer 12, and the outer wall of the polyethylene wear-resistant layer 18 is fixedly installed with a polyurethane wear-resistant layer 19. The wall thickness of the wear-resistant and impact-resistant composite layer 11 is 1.68 mm. By setting the inner tube layer 13, the silver ions in the inner tube layer 13 can effectively inhibit and kill bacteria in the water, thereby avoiding the growth of a large number of bacteria on the inner wall of the composite water supply pipe 10 and avoiding bacterial contamination of the water quality.

[0026] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 4 As shown, the compression-resistant and toughened composite layer 12 includes a PPR main layer 20, and the inner wall of the PPR main layer 20 is fixedly connected to the outer wall of the inner tube layer 13, the outer wall of the PPR main layer 20 is fixedly installed with a composite compression-resistant and toughened layer 21, the composite compression-resistant and toughened layer 21 includes a high-density polyethylene toughening layer 22, and the inner wall of the high-density polyethylene toughening layer 22 is fixedly connected to the outer wall of the PPR main layer 20, the outer wall of the high-density polyethylene toughening layer 22 is fixedly installed with a polypropylene toughening layer 23, and the outer wall of the polypropylene toughening layer 23 is fixedly connected to the inner wall of the polyoxymethylene resin impact-resistant layer 16, the wall thickness of the compression-resistant and toughened composite layer 12 is 1.68 mm, and by setting the inner tube layer 13, the food-grade polypropylene material in the inner tube layer 13 has a certain antibacterial effect, which further improves the antibacterial ability of the entire composite water supply pipe 10.

[0027] Embodiment 4: A multi-layer co-extruded PPR water supply composite pipe, such as Figure 2As shown, it includes a composite water supply pipe, which includes a wear-resistant and impact-resistant composite layer, the inner wall of the wear-resistant and impact-resistant composite layer is fixedly installed with a compression-resistant and toughened composite layer, the inner wall of the compression-resistant and toughened composite layer is fixedly installed with an inner pipe layer, the wear-resistant and impact-resistant composite layer includes a polyethylene wear-resistant layer, and the inner wall of the polyethylene wear-resistant layer is fixedly connected to the outer wall of the compression-resistant and toughened composite layer, the outer wall of the polyethylene wear-resistant layer is fixedly installed with a polyurethane wear-resistant layer, the compression-resistant and toughened composite layer includes a PPR main layer, and the inner wall of the PPR main layer is fixedly connected to the outer wall of the inner pipe layer, the outer wall of the PPR main layer is fixedly installed with a composite compression-resistant and toughened layer, the composite compression-resistant and toughened layer includes a high-density polyethylene toughened layer, and the inner wall of the high-density polyethylene toughened layer is fixedly connected to the outer wall of the PPR main layer The wall is fixedly connected, the outer wall of the high-density polyethylene toughening layer is fixedly installed with a polypropylene toughening layer, and the outer wall of the polypropylene toughening layer is fixedly connected to the inner wall of the polyoxymethylene resin impact-resistant layer. The diameter of the composite water supply pipe is dn25, the wall thickness of the composite water supply pipe is 4.2mm, the wall thickness of the wear-resistant and impact-resistant composite layer is 1.68mm, the wall thickness of the compression-resistant toughening composite layer is 1.68mm, and the wall thickness of the inner tube layer is 0.84mm. The material of the inner tube layer 13 is a hydrophobic material with a non-smooth surface structure imitating butterfly wings. By setting the inner tube layer 13, the material of the inner tube layer 13 is a hydrophobic material, which can effectively reduce water flow resistance, increase water flow and reduce pipe wall attachments, so that water can flow smoothly in the pipe, further avoiding the growth of bacteria.

[0028] The working principle of the utility model is as follows: first, the polyethylene wear-resistant layer 18 and the polyurethane wear-resistant layer 19 are made into a wear-resistant and impact-resistant composite layer 11, and then the high-density polyethylene toughening layer 22 and the polypropylene toughening layer 23 are made into a composite compressive toughening layer 21, and then the PPR main layer 20 and the composite compressive toughening layer 21 are made into a compressive toughening composite layer 12, and then silver ions are added to the food-grade polypropylene material or the hydrophobic material is made into the inner tube layer 13, and finally the wear-resistant and impact-resistant composite layer 11, the compressive toughening composite layer 12 and the inner tube layer 13 are co-extruded into one to form a composite water supply pipe 10.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-layer co-extruded PPR composite water supply pipe, comprising a composite water supply pipe (10), characterized in that: The composite water supply pipe (10) comprises a wear-resistant and impact-resistant composite layer (11), the inner wall of the wear-resistant and impact-resistant composite layer (11) is fixedly mounted with a compression-resistant and toughened composite layer (12), the inner wall of the compression-resistant and toughened composite layer (12) is fixedly mounted with an inner pipe layer (13), the wear-resistant and impact-resistant composite layer (11) comprises a polyethylene wear-resistant layer (18), and the inner wall of the polyethylene wear-resistant layer (18) is fixedly connected to the outer wall of the compression-resistant and toughened composite layer (12), the outer wall of the polyethylene wear-resistant layer (18) is fixedly mounted with a polyurethane wear-resistant layer (19), and the compression-resistant and toughened composite layer (12) comprises a PPR main body layer ( 20), and the inner wall of the PPR main layer (20) is fixedly connected to the outer wall of the inner tube layer (13), the outer wall of the PPR main layer (20) is fixedly installed with a composite compressive toughening layer (21), the composite compressive toughening layer (21) includes a high-density polyethylene toughening layer (22), and the inner wall of the high-density polyethylene toughening layer (22) is fixedly connected to the outer wall of the PPR main layer (20), the outer wall of the high-density polyethylene toughening layer (22) is fixedly installed with a polypropylene toughening layer (23), and the outer wall of the polypropylene toughening layer (23) is fixedly connected to the inner wall of the polyoxymethylene resin impact-resistant layer (16).

2. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The diameter of the composite water supply pipe (10) is dn25, and the wall thickness of the composite water supply pipe (10) is 4.2 mm.

3. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The wall thickness of the wear-resistant and impact-resistant composite layer (11) is 1.68 mm.

4. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The wall thickness of the compression-resistant and toughened composite layer (12) is 1.68 mm.

5. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The wall thickness of the inner tube layer (13) is 0.84 mm.

6. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The material of the inner tube layer (13) is food-grade polypropylene material with added silver ions, wherein the content of silver ions is 0.2%.

7. The multi-layer co-extruded PPR water supply composite pipe according to claim 1, characterized in that: The material of the inner tube layer (13) is a hydrophobic material with a non-smooth surface structure imitating butterfly wings.

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