High-strength anti-freezing PPR pipe

Abstract

The utility model discloses a high-strength anti-freezing PPR pipe which comprises a PPR pipe body, an anti-freezing layer is arranged on the outer wall face of the PPR pipe body, and a heat insulation protection layer is arranged on the outer wall face of the anti-freezing layer. An outer heat insulation protection layer is arranged on the outer side of the heat insulation protection layer, and a gap is formed between the outer heat insulation protection layer and the heat insulation protection layer. The anti-freezing layer is arranged on the outer wall face of the PPR pipe to achieve heat preservation and freezing prevention of the first layer, meanwhile, the heat insulation protection layer and the outer heat insulation protection layer are arranged on the outer wall face of the anti-freezing layer, the heat insulation cavity is formed between the heat insulation protection layer and the outer heat insulation protection layer, heat preservation and freezing prevention of the second layer are achieved, the service life is greatly prolonged, and the anti-freezing effect is achieved.

Description

Technical Field:

[0001] The utility model relates to the technical field of pipe equipment, and more specifically, to a high-strength anti-freezing PPR pipe. Background Art:

[0002] The PPR pipe, also known as the three-propylene polypropylene pipe, random copolymer polypropylene pipe or PPR pipe, is a kind of pipe made of random copolymer polypropylene as raw material. The low-temperature brittle temperature of the existing PPR pipe is below 5°C. When the ambient temperature is lower than 5°C, the toughness of the PPR pipe will decrease, become brittle, and be prone to cracking under the action of external force. Especially when used in winter, it is very easy to break, affecting the use.

[0003] At the same time, when installing the existing PPR pipes, specific clamping parts are required to clamp and fix the whole PPR pipe on the wall surface. The PPR pipe needs to be pressed against the wall surface, and the two are prone to friction during installation, making the surface of the PPR pipe easy to wear. Content of the Utility Model:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-strength anti-freezing PPR pipe. An anti-freezing layer is provided on the outer wall surface of the PPR pipe to achieve the first layer of heat preservation and anti-freezing. At the same time, a heat insulation protection layer and an outer heat insulation protection layer are provided on the outer wall surface of the anti-freezing layer, and a heat insulation cavity is provided between the two to achieve the second layer of heat preservation and anti-freezing, greatly improving its service life and achieving the anti-freezing effect.

[0005] The solution of the utility model to solve the above technical problems is:

[0006] A high-strength anti-freezing PPR pipe, including a PPR pipe body. An anti-freezing layer is provided on the outer wall surface of the PPR pipe body, and a heat insulation protection layer is provided on the outer wall surface of the anti-freezing layer;

[0007] An outer heat insulation protection layer is provided on the outside of the heat insulation protection layer, and there is a distance between the outer heat insulation protection layer and the heat insulation protection layer.

[0008] A plurality of axially extending convex support bars and a plurality of annular convex rings extending radially along the outer wall surface of the heat insulation protection layer are formed on the outer side wall of the heat insulation protection layer. All the annular convex rings and the convex support bars form a mesh-shaped convex layer, and the outer side wall of the mesh-shaped convex layer is formed on the inner side wall of the outer heat insulation protection layer.

[0009] Axially extending main convex connecting bars extending outwards are formed on both the left side wall and the right side wall of the outer heat insulation protection layer.

[0010] Extension convex parts are formed on both the top surface and the bottom surface of the outer end of the main convex connecting bar. A connecting seat is installed on the two main convex connecting bars, and connecting fixed through holes are formed on both the left part and the right part of the bottom plate of the connecting seat.

[0011] The outstanding effect of the present utility model is:

[0012] An anti-freezing layer is provided on the outer wall surface of the PPR pipe to achieve the first layer of heat preservation and anti-freezing. At the same time, a heat insulation protection layer and an outer heat insulation protection layer are provided on the outer wall surface of the anti-freezing layer, and a mesh raised layer is provided between the two to achieve the second layer of heat preservation and anti-freezing effect, greatly improving its service life and achieving the anti-freezing effect.

[0013] At the same time, the connecting seat it has can be connected to the raised connecting strip of the outer heat insulation protection layer and can be fixed on the wall surface at the connection. It can ensure that the outer heat insulation protection layer does not contact the connection, guarantee its surface quality, and it is convenient to install. After the bolts at the connection between the connecting seat and the connection are disassembled, it can still be on the raised connecting strip and will not fall off, making the connecting seat not easy to be lost. Description of the drawings:

[0014] Figure 1 is a partial structural schematic diagram of the present utility model;

[0015] Figure 2 is a partial top view of the present utility model;

[0016] Figure 3 is a partial structural schematic diagram of the staggered formation of the raised support strip and the annular raised ring. Specific implementation manner:

[0017] In an embodiment, as shown in Figures 1 to 3 a high-strength anti-freezing PPR pipe, including a PPR pipe body 10, an anti-freezing layer 20 is provided on the outer wall surface of the PPR pipe body 10, and a heat insulation protection layer 30 is provided on the outer wall surface of the anti-freezing layer 20;

[0018] An outer heat insulation protection layer 40 is provided outside the heat insulation protection layer 30, and there is a spacing between the outer heat insulation protection layer 40 and the heat insulation protection layer 30.

[0019] In this embodiment, the anti-freezing layer 20 is made of rubber and plastic sponge. The rubber and plastic sponge thermal insulation material has a low thermal conductivity and good heat insulation effect, while the heat insulation protection layer 30 and the outer heat insulation protection layer 40 are both rubber material layers, and they have good anti-low temperature effects.

[0020] Furthermore, a plurality of axially extending convex support bars 31 and a plurality of annular convex rings 33 extending radially along the outer side wall of the heat insulation protection layer 30 are formed on the outer side wall of the heat insulation protection layer 30. All the annular convex rings 33 and the convex support bars 31 are staggered to form a net-shaped convex layer, and the outer side wall of the net-shaped convex layer is formed on the inner side wall of the outer heat insulation protection layer 40. There is a net-shaped convex layer between the heat insulation protection layer 30 and the outer heat insulation protection layer 40, which increases the distance between the outer heat insulation protection layer 40 and the heat insulation protection layer 30, increases the overall thickness, and greatly improves its heat insulation, anti-freezing and heat preservation effects. Moreover, the rubber material has good low-temperature resistance. For example, nitrile rubber can withstand a low temperature of -50°C, anti-low-temperature fluororubber can withstand a low temperature of -40°C, low-phenyl silicone rubber can withstand a low temperature of -100°C, and silicone rubber can withstand a low temperature of -60°C. In this embodiment, nitrile rubber is used, which can resist low temperature to about -50°C. Therefore, its anti-low-temperature heat insulation effect, combined with the heat insulation and heat preservation effect of the anti-freezing layer 20, enables the PPR pipe body 10 to be used normally and is not easily frozen and cracked, ensuring its normal use.

[0021] Furthermore, main convex connecting bars 32 extending axially outward are formed on both the left and right side walls of the outer heat insulation protection layer 40.

[0022] Extension convex portions 35 are formed on both the top surface and the bottom surface of the outer end of the main convex connecting bar 32, so that its cross-section is in the shape of a convex character placed horizontally.

[0023] The connecting seat 50 is installed on the two main convex connecting bars 32, and fixing through holes 51 for connection are formed on both the left and right parts of the bottom plate of the connecting seat 50.

[0024] Furthermore, the connecting seat 50 includes a bottom plate, and vertical connecting portions 52 extending upward are formed on both the left and right parts of the top surface of the bottom plate. Card slots 53 are formed on the upper parts of the opposite wall surfaces of the two vertical connecting portions 52. The outer heat insulation protection layer 40 is between the two vertical connecting portions 52, and its bottom surface presses against or is close to the middle part of the top surface of the bottom plate;

[0025] The card slot 53 is a through groove extending forward and backward formed on the upper part of the side wall of the corresponding vertical connecting portion 52 facing the outer heat insulation protection layer 40. Grooves extending forward and backward are formed on both the top surface and the bottom surface of the end of the through groove far from the outer heat insulation protection layer 40. The corresponding main convex connecting bar 32 is clamped in the corresponding through groove, and the extension convex portion 35 is clamped in the corresponding groove.

[0026] When this embodiment is in use, through the anti-freezing layer 20, the heat insulation protection layer 30, the outer heat insulation protection layer 40 and the net-shaped convex layer, the heat preservation and anti-freezing effects on the PPR pipe body 10 are greatly improved, ensuring its normal use.

[0027] During installation, the connecting seat 50 can be moved along the two main convex connecting strips 32 to the position where it needs to be installed. Then, the fixing through holes 51 on the left and right parts of the bottom plate of the connecting seat 50 can be inserted with wall nails (or other fasteners) and fixed at the corresponding positions to complete the installation.

[0028] During disassembly and assembly, the connecting seat 50 is movably installed on the main convex connecting strip 32, so that it is together with the pipe body and not easily lost. For example, during installation, the connecting seat 50 can be pre-installed on the main convex connecting strip 32 and moved to the installation position along with the pipe body, and then it can be directly installed. When disassembling, after removing the wall nails (or other fasteners) at the connecting seat 50, the connecting seat 50 still remains on the main convex connecting strip 32 and will not be lost, which is convenient for subsequent collection.

[0029] The connecting seat 50 of this embodiment can be made of plastic parts, which separate the outer heat insulation protection layer 40 from the connection part, making it not easy to conduct heat with the connection part, ensuring the heat insulation and anti-freezing effects. Moreover, since the connecting seat 50 is made of plastic parts, the friction and wear between it and the outer heat insulation protection layer 40 are small, and the installation effect is good.

Claims

1. A high-strength anti-freezing PPR pipe, comprising a PPR pipe body (10), characterized in that: An anti-freezing layer (20) is provided on the outer wall surface of the PPR pipe body (10), and a heat insulation and protection layer (30) is provided on the outer wall surface of the anti-freezing layer (20). An outer heat insulation and protection layer (40) is provided on the outside of the heat insulation and protection layer (30), and there is a spacing between the outer heat insulation and protection layer (40) and the heat insulation and protection layer (30).

2. The high-strength anti-freezing PPR pipe according to claim 1, wherein: A plurality of axially extending convex support strips (31) and a plurality of annular convex rings (33) radially extending along the outer wall surface of the heat insulation and protection layer (30) are formed on the outer wall surface of the heat insulation and protection layer (30). All the annular convex rings (33) and the convex support strips (31) form a net-shaped convex layer, and the outer wall surface of the net-shaped convex layer is formed on the inner wall surface of the outer heat insulation and protection layer (40).

3. The high-strength anti-freezing PPR pipe according to claim 1, characterized in that: Axially extending main convex connecting strips (32) extending outward are formed on both the left and right side walls of the outer heat insulation and protection layer (40).

4. The high-strength anti-freezing PPR pipe according to claim 3, wherein: Extension convex portions (35) are formed on both the top and bottom surfaces of the outer ends of the main convex connecting strips (32). A connecting seat (50) is installed on the two main convex connecting strips (32), and connecting fixed through holes (51) are formed in both the left and right portions of the bottom plate of the connecting seat (50).

5. The high-strength anti-freezing PPR pipe according to claim 4, characterized in that: The connecting seat (50) includes a bottom plate, and vertically extending connecting portions (52) extending upward are formed in both the left and right portions of the top surface of the bottom plate. Card slots (53) are formed in the upper portions of the opposite wall surfaces of the two vertically extending connecting portions (52).

6. The high-strength anti-freezing PPR pipe according to claim 5, characterized in that: The card slot (53) is a through slot that extends forward and backward and extends outward in the upper portion of the side wall of the corresponding vertically extending connecting portion (52) facing the outer heat insulation and protection layer (40). Grooves that extend forward and backward are formed in both the top and bottom surfaces of the end of the through slot far from the outer heat insulation and protection layer (40). The corresponding main convex connecting strip (32) is clamped in the corresponding through slot, and the extension convex portion (35) is clamped in the corresponding groove.

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