Anti-freezing PPR pipe

Abstract

The utility model belongs to the technical field of PPR (pentatricopeptide repeats) pipes and discloses an anti-freezing PPR pipe which comprises a PPR pipe base body. The antibacterial layer is arranged on the inner cavity wall of the PPR pipe base body, and the antibacterial layer is used for resisting bacteria; the anti-freezing structure is arranged on the outer surface of the PPR pipe base body, and the anti-freezing structure is used for deformation and freezing prevention; and an outer protective layer. The anti-freezing structure is arranged on the outer surface of the PPR pipe base body, when the PPR pipe expands with heat and contracts with cold, the inner aluminum net, the arc-shaped rubber layer and the outer aluminum net can absorb elastic force and deformation quantity generated by expansion with heat and contraction with cold of the PPR pipe, and therefore good deformation performance and anti-freezing effect are achieved. The inner aluminum net, the heat conduction ribs, the outer aluminum net and the heat preservation layer can conduct heat and play a role in dissipating part of heat, the heat preservation layer plays a role in heat preservation, the PPR pipe can adapt to the low-temperature environment, and therefore the PPR pipe has the good deformation performance and can prevent freezing, and the performance of the PPR pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PPR pipes, in particular to a freeze-resistant PPR pipe. Background Art

[0002] PPR pipes are made of polypropylene random copolymer (PPR). PPR is a high molecular polymer material with excellent high temperature resistance, pressure resistance and corrosion resistance. It can withstand high temperature and high pressure, chemical corrosion, and wear resistance. Therefore, PPR pipes are widely used in water supply pipe systems and HVAC systems.

[0003] At present, PPR pipes with various functions are emerging in an endless stream, such as thermal insulation PPR pipes, antibacterial PPR pipes, cold-resistant PPR pipes, etc. The inventors have found that existing PPR pipes do not have good performance in adapting to deformation. Once the temperature drops to a critical point, the PPR pipes will expand and burst due to the principle of thermal expansion and contraction. Therefore, we have proposed an antifreeze PPR pipe. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the inventors have conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0005] Specifically, the technical problem to be solved by the present invention is to provide a freeze-resistant PPR pipe to solve the technical problem that the existing PPR pipe does not have good performance in adapting to deformation and will expand and burst when the temperature drops to a critical point.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A freeze-resistant PPR pipe, comprising: a PPR pipe substrate;

[0008] An antibacterial layer is provided on the inner wall of the PPR pipe substrate and is used for antibacterial purposes;

[0009] An antifreeze structure, which is provided on the outer surface of the PPR pipe substrate and is used for deformation and antifreeze;

[0010] An outer protective layer is provided on the outer surface of the antifreeze structure and is used for protection.

[0011] As an improved technical solution, the thickness of the antibacterial layer is half the thickness of the PPR pipe substrate, and it is made of nano-titanium oxide material doped with a bactericide.

[0012] As an improved technical solution, the antifreeze structure includes an inner aluminum mesh, which is arranged on the outer surface of the PPR pipe base. The outer surface of the inner aluminum mesh is provided with heat conduction ribs, and the end of the heat conduction rib away from the inner aluminum mesh is provided with an outer aluminum mesh. The outer surface of the outer aluminum mesh is provided with an insulation layer, and the insulation layer is provided on the inner cavity wall of the outer protective layer.

[0013] As an improved technical solution, the heat conduction ribs are arranged in a circular array on the outer surface of the inner aluminum mesh and on the inner cavity wall of the outer aluminum mesh.

[0014] As an improved technical solution, a deformation cavity is formed between the inner aluminum mesh, the heat conduction ribs and the outer aluminum mesh. The deformation cavity is arranged in a circular array, and an arc-shaped rubber layer is provided in the deformation cavity.

[0015] As an improved technical solution, a buffer cavity is opened inside the arc-shaped rubber layer, and the buffer cavities are arranged in a curved array on the arc-shaped rubber layer.

[0016] As an improved technical solution, the inner shape and size of the deformation cavity are adapted to the outer surface shape and size of the arc-shaped rubber layer.

[0017] As an improved technical solution, the outer protective layer is made of polypropylene fiber.

[0018] After adopting the above technical solution, the beneficial effects of the utility model are:

[0019] 1. The utility model provides an antifreeze structure on the outer surface of the PPR pipe substrate. When the PPR pipe expands and contracts with heat, the inner aluminum mesh, the arc-shaped rubber layer and the outer aluminum mesh can absorb the elastic force and deformation caused by the thermal expansion and contraction of the PPR pipe, so as to achieve good deformation performance and antifreeze effect. The inner aluminum mesh, the heat conduction ribs, the outer aluminum mesh and the insulation layer can conduct heat and play a role in dissipating part of the heat. The insulation layer plays a role in heat preservation, so that the PPR pipe can adapt to low temperature environment, thereby having good deformation performance and antifreeze, thereby improving the performance of the PPR pipe.

[0020] 2. The utility model provides an antibacterial layer on the inner wall of the PPR pipe substrate, and sequentially provides an antifreeze structure and an outer protective layer on the outer surface of the PPR pipe substrate, thereby improving the antibacterial performance and pressure resistance of the PPR pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0022] Figure 1 This is a schematic diagram of the overall structure of the antifreeze PPR pipe of the utility model.

[0023] Figure 2 This is a schematic diagram of the decomposition of the curved rubber layer and the overall structure of the antifreeze PPR pipe of the utility model.

[0024] Figure 3 For the utility model of antifreeze PPR pipe Figure 2 Enlarged structural diagram at point A in the middle.

[0025] Description of reference numerals:

[0026] In the figure: 1. PPR pipe base; 2. Antibacterial layer; 3. Antifreeze structure; 31. Inner aluminum mesh; 32. Heat conduction ribs; 33. Outer aluminum mesh; 34. Deformation cavity; 35. Arc-shaped rubber layer; 351. Buffer cavity; 36. Insulation layer; 4. Outer protective layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0030] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model. Example 1

[0031] Reference Figure 1-3 , which is the first embodiment of the present utility model, provides an antifreeze PPR pipe, the antifreeze PPR pipe comprising: a PPR pipe substrate 1;

[0032] The antibacterial layer 2 is provided on the inner wall of the PPR pipe substrate 1 and is used for antibacterial purposes;

[0033] The antifreeze structure 3 is provided on the outer surface of the PPR pipe substrate 1 and is used for deformation and antifreeze;

[0034] The outer protective layer 4 is provided on the outer surface of the antifreeze structure 3 and is used for protection.

[0035] The thickness of the antibacterial layer 2 is half of the thickness of the PPR pipe substrate 1, and it is made of nano-titanium oxide material doped with a bactericide, and the bactericide is copper sulfate.

[0036] The material of the outer protective layer 4 is polypropylene fiber, which has good compressive performance, strong alkali resistance, high strength, good elasticity, wear resistance, corrosion resistance and good thermal insulation, so as to improve the compressive capacity of the PPR pipe and prevent the PPR pipe from freezing and cracking at low temperatures.

[0037] During use, an antibacterial layer 2 is provided on the inner wall of the PPR pipe substrate 1, and an antifreeze structure 3 and an outer protective layer 4 are provided on the outer surface of the PPR pipe substrate 1 in sequence, so as to improve the antibacterial performance and pressure resistance of the PPR pipe. Example 2

[0038] Reference Figure 1-3 , which is the second embodiment of the present utility model, is different from the first embodiment in that:

[0039] The antifreeze structure 3 includes an inner aluminum mesh 31, which is arranged on the outer surface of the PPR pipe base 1. The outer surface of the inner aluminum mesh 31 is provided with heat conduction ribs 32, and the end of the heat conduction ribs 32 away from the inner aluminum mesh 31 is provided with an outer aluminum mesh 33. The outer surface of the outer aluminum mesh 33 is provided with an insulation layer 36, and the insulation layer 36 is provided on the inner cavity wall of the outer protective layer 4, so as to achieve good deformation performance and antifreeze effect.

[0040] The heat conducting ribs 32 are arranged in a circumferential array on the outer surface of the inner aluminum mesh 31 and on the inner wall of the outer aluminum mesh 33 so as to dissipate part of the heat.

[0041] A deformation cavity 34 is formed between the inner aluminum mesh 31 , the heat conduction ribs 32 and the outer aluminum mesh 33 . The deformation cavity 34 is arranged in a circular array, and an arc-shaped rubber layer 35 is provided in the deformation cavity 34 to absorb elastic force and deformation.

[0042] A buffer cavity 351 is defined inside the arc-shaped rubber layer 35 . The buffer cavities 351 are arranged in a curved array on the arc-shaped rubber layer 35 to absorb elastic force and deformation.

[0043] The inner shape and size of the deformation cavity 34 are adapted to the outer surface shape and size of the arc-shaped rubber layer 35 , so that the arc-shaped rubber layer 35 can be installed in the deformation cavity 34 more closely.

[0044] During use, by setting the antifreeze structure 3 on the outer surface of the PPR pipe base 1, when the PPR pipe expands and contracts due to thermal expansion and contraction, the inner aluminum mesh 31, the arc-shaped rubber layer 35 and the outer aluminum mesh 33 can absorb the elastic force and deformation caused by the thermal expansion and contraction of the PPR pipe, so as to achieve good deformation performance and antifreeze effect, and the inner aluminum mesh 31, the heat conduction ribs 32, the outer aluminum mesh 33 and the insulation layer 36 can conduct heat and play a role in dissipating part of the heat, among which the insulation layer 36 plays a role in heat preservation, so that the PPR pipe can adapt to low temperature environment, thereby having good deformation performance and antifreeze, thereby improving the performance of the PPR pipe.

[0045] The remaining structures are the same as those of Example 1.

[0046] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. In addition, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications and / or variations to the present invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims of this application.

Claims

1. A freeze-resistant PPR pipe, characterized by: include: PPR pipe base (1); An antibacterial layer (2), the antibacterial layer (2) being provided on the inner cavity wall of the PPR pipe substrate (1), the antibacterial layer (2) being used for antibacterial purposes; An antifreeze structure (3), the antifreeze structure (3) being provided on the outer surface of the PPR pipe substrate (1), the antifreeze structure (3) being used for deformation and antifreeze, the antifreeze structure (3) comprising an inner aluminum mesh (31), the inner aluminum mesh (31) being provided on the outer surface of the PPR pipe substrate (1), the outer surface of the inner aluminum mesh (31) being provided with heat conduction ribs (32), the end of the heat conduction ribs (32) away from the inner aluminum mesh (31) being provided with an outer aluminum mesh (33), the outer surface of the outer aluminum mesh (33) being provided with a heat insulation layer (36); An outer protective layer (4), the outer protective layer (4) is provided on the outer surface of the antifreeze structure (3), the outer protective layer (4) is used for protection, and the heat-insulating layer (36) is provided on the inner cavity wall of the outer protective layer (4).

2. The antifreeze PPR pipe according to claim 1, characterized in that: The heat conduction ribs (32) are arranged in a circumferential array on the outer surface of the inner aluminum mesh (31) and on the inner cavity wall of the outer aluminum mesh (33).

3. The antifreeze PPR pipe according to claim 1, characterized in that: A deformation cavity (34) is formed between the inner aluminum mesh (31), the heat conduction ribs (32) and the outer aluminum mesh (33); the deformation cavities (34) are arranged in a circular array, and an arc-shaped rubber layer (35) is provided in the deformation cavity (34).

4. The antifreeze PPR pipe according to claim 3, characterized in that: A buffer cavity (351) is provided inside the arc-shaped rubber layer (35), and the buffer cavities (351) are arranged in a curved array on the arc-shaped rubber layer (35).

5. The antifreeze PPR pipe according to claim 3, characterized in that: The inner shape and size of the deformation cavity (34) are compatible with the outer surface shape and size of the arc-shaped rubber layer (35).

6. The antifreeze PPR pipe according to claim 1, characterized in that: The outer protective layer (4) is made of polypropylene fiber.

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