Rubber foaming pipe

Abstract

The utility model discloses a rubber foaming pipe in the field of foaming pipes, which comprises an upper pipe body and a lower pipe body, the upper pipe body and the lower pipe body are respectively provided with a hollow pipe, a first thermal insulation layer, a second thermal insulation layer and an outer protective layer from inside to outside, the first thermal insulation layer is arranged on the surface of the hollow pipe, the second thermal insulation layer is arranged on the surface of the first thermal insulation layer, and the outer protective layer is arranged on the surface of the second thermal insulation layer. The outer protective layer is arranged on the surface of the second heat preservation layer, the thickness of the first heat preservation layer and the thickness of the second heat preservation layer are both larger than the thickness of the hollow pipe, the upper pipe body and the lower pipe body are each sleeved with a tensile armor layer, and a plurality of metal belts are wound on the surfaces of the tensile armor layers. According to the rubber foaming pipe, the first heat preservation layer and the second heat preservation layer are arranged to form a double-heat-insulation structure, the heat conduction efficiency is remarkably reduced, the first heat preservation layer and the second heat preservation layer are both thicker than the hollow pipe, it is ensured that the heat preservation layers occupy a leading structure, heat loss caused by the too thin hollow pipe is avoided, and the heat preservation performance of the foaming pipe is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of foam tubes, specifically a rubber foam tube. Background Technology

[0002] Foamed pipes, also known as thermal insulation pipes, are widely used for the insulation, corrosion prevention, and protection of various internal pipes, such as those used in solar water heaters, outdoor tap water supply, wall-embedded pipes, and air conditioning connection pipes. Typically, foamed pipes consist of a foamed material wrapped around the outer surface of the inner pipe to isolate temperature exchange between the inside and outside of the pipe and prevent environmental corrosion. However, because some insulated pipes are directly exposed to the external environment, objects in the environment can easily compress the pipes, causing deformation of the internal insulation layer and reducing its insulation effectiveness.

[0003] Existing foamed pipes also have the following drawbacks: Traditional foamed pipes mostly use a single insulation layer (such as a single layer of rubber foam), which has limited thermal resistance. A single material cannot create a gradient insulation effect, and heat is easily lost rapidly through conduction (due to the material's high thermal conductivity) and radiation (due to the lack of a reflective layer). The single-layer insulation layer is relatively thin, causing heat to be directly transferred through the pipe wall, weakening the insulation effect and resulting in poor insulation performance. Due to its porous internal structure, the tensile strength (typically <1MPa) and compressive strength (<0.3MPa) of foamed rubber are significantly lower than those of dense rubber, making it prone to plastic deformation or rupture under axial tension or radial pressure. Traditional pipes rely on the tensile strength of the rubber itself without incorporating reinforcing structures such as metal armor, making the pipes prone to elongation or even breakage under tension. The pipe body is supported only by the foam material; after long-term pressure, the closed-cell structure collapses, reducing elasticity and causing permanent deformation, resulting in poor tensile and compressive strength. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a rubber foam tube that can effectively solve the technical problems of poor thermal insulation performance, poor thermal insulation effect, and poor tensile and compressive strength of existing foam tubes.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a rubber foam tube, including an upper tube body and a lower tube body. The upper tube body and the lower tube body are provided with a hollow tube, a first insulation layer, a second insulation layer and an outer protective layer from the inside to the outside. The first insulation layer is disposed on the surface of the hollow tube, the second insulation layer is disposed on the surface of the first insulation layer, and the outer protective layer is disposed on the surface of the second insulation layer. The thickness of the first insulation layer and the second insulation layer is greater than the thickness of the hollow tube. The upper tube body and the lower tube body are both covered with a tensile armor layer, and the surface of the tensile armor layer is wrapped with several metal strips.

[0006] Furthermore, the surface of the upper tube body is recessed inward to form a positioning groove, which extends along the length of the upper tube body and is provided with an adhesive layer. The surface of the lower tube body protrudes outward to form a positioning strip, which extends along the length of the lower tube body and is bonded to the positioning groove through the adhesive layer.

[0007] Furthermore, the outer protective layer is made of rubber, and the thickness of the outer protective layer is greater than the sum of the thickness of the first insulation layer and the second insulation layer.

[0008] Furthermore, the first insulation layer is made of mineral wool, and the second insulation layer is made of silicate cotton.

[0009] Furthermore, the cross-sections of both the positioning groove and the positioning strip are semi-circular.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a rubber foam tube, which forms a double heat insulation structure by setting a first insulation layer and a second insulation layer, significantly reducing the heat conduction efficiency. The thickness of both the first and second insulation layers is greater than that of the hollow tube, ensuring that the insulation layer occupies the dominant structure and avoiding heat loss due to the hollow tube being too thin, thus greatly improving the heat insulation performance of the foam tube. The tensile armor layer is sleeved on the surface of the upper and lower tube bodies, significantly enhancing the axial tensile performance of the tube and avoiding structural failure due to tensile deformation. The metal strip is wrapped around the surface of the tensile armor layer to form a rigid support, which can resist external pressure and greatly improve the structural strength and tensile and compressive strength of the foam tube. Attached Figure Description

[0011] Figure 1 This is a perspective view of a rubber foam tube according to the present invention;

[0012] Figure 2 This is a schematic diagram of the upper and lower tube bodies of a rubber foam tube according to the present invention.

[0013] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0014] Numbering on the map:

[0015] 1-Upper tube body; 2-Lower tube body; 3-Hollow tube; 4-First insulation layer; 5-Second insulation layer; 6-Outer protective layer; 7-Tensile armor layer; 8-Metal strip; 9-Positioning strip; 10-Positioning groove; 11-Adhesive 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] The following is combined Figures 1-3 A detailed description of a rubber foam tube according to this utility model is provided:

[0018] A rubber foam tube includes an upper tube body 1 and a lower tube body 2. Both the upper tube body 1 and the lower tube body 2 are provided with a hollow tube 3, a first insulation layer 4, a second insulation layer 5, and an outer protective layer 6 from the inside out. The first insulation layer 4 is disposed on the surface of the hollow tube 3, the second insulation layer 5 is disposed on the surface of the first insulation layer 4, and the outer protective layer 6 is disposed on the surface of the second insulation layer 5. The thickness of both the first insulation layer 4 and the second insulation layer 5 is greater than the thickness of the hollow tube 3. Both the upper tube body 1 and the lower tube body 2 are fitted with a tensile armor layer 7. Several metal strips 8 are wound around the surface of the tensile armor layer 7. The surface of the upper tube body 1 is recessed inward to form a positioning... The positioning groove 10 extends along the length of the upper tube 1 and is provided with an adhesive layer 11. The surface of the lower tube 2 protrudes outward to form a positioning strip 9, which extends along the length of the lower tube 2. The positioning strip 9 is bonded to the positioning groove 10 through the adhesive layer 11. The outer protective layer 6 is made of rubber and its thickness is greater than the sum of the first insulation layer 4 and the second insulation layer 5. The first insulation layer 4 is made of mineral wool and the second insulation layer 5 is made of silicate cotton. The cross-sections of the positioning groove 10 and the positioning strip 9 are both semi-circular.

[0019] In this embodiment, the outer protective layer 6 is made of rubber. Rubber has good elasticity and can effectively absorb and disperse external impact forces, such as collisions and drops, to prevent the foamed tube from deforming or breaking due to external impacts, thus extending the service life of the foamed tube. The tensile armor layer 7 is fitted on the surface of the upper and lower tube bodies 2, which significantly enhances the axial tensile performance of the tube and avoids structural failure due to tensile deformation. The adhesive layer 11 fills the gap between the positioning groove 10 and the positioning strip 9 to form a sealed structure, which can bond the upper tube body 1 and the lower tube body 2 to form a complete foamed tube. The tensile armor layer 7 and the metal strip 8 compensate for the structural strength, achieving the characteristics of lightweight and high strength.

[0020] In this embodiment, the first insulation layer 4 made of mineral wool and the second insulation layer 5 made of silicate cotton form a gradient insulation structure with a thermal conductivity ≤0.035W / (m·K). The total thickness of the double insulation layers is 10mm, of which the thickness of the first insulation layer 4 is 6mm, the thickness of the second insulation layer 5 is 4mm, the thickness of the outer protective layer 6 is 12mm, the thickness of the hollow tube 3 is 3mm, the tensile armor layer 7 is made of stainless steel strip with high tensile strength, and the semi-circular positioning groove 10 and positioning strip 9 are in contact with each other to increase the contact area. With the help of silicone adhesive, the upper tube 1 and the lower tube 2 can be bonded to form a complete foamed tube.

[0021] In this embodiment, a rubber foamed pipe forms a double insulation structure by setting a first insulation layer 4 and a second insulation layer 5, which significantly reduces the heat conduction efficiency. The thickness of both the first and second insulation layers 5 is greater than that of the hollow pipe 3, ensuring that the insulation layer occupies the dominant structure and avoiding heat loss due to the hollow pipe 3 being too thin. This greatly improves the insulation performance of the foamed pipe. The tensile armor layer 7 is sleeved on the surface of the upper and lower pipe bodies 2, which significantly enhances the axial tensile performance of the pipe and avoids structural failure due to tensile deformation. The metal strip 8 is wrapped around the surface of the tensile armor layer 7 to form a rigid support, which can resist external pressure and greatly improve the structural strength and tensile and compressive strength of the foamed pipe.

[0022] In practical use, install foamed pipes on the required pipes, align the positioning groove 10 of the upper pipe body 1 with the upper half of the pipe, align the positioning groove 10 of the lower pipe body 2 with the lower half of the pipe, insert the positioning strip 9 on the lower pipe body 2 into the positioning groove 10 of the upper pipe body 1, and bond the upper pipe body 1 and the lower pipe body 2 together through the adhesive layer 11. Finally, rotate and fit the tensile armor layer 7 onto the surfaces of the upper pipe body 1 and the lower pipe body 2.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rubber foamed tube comprising an upper tube body and a lower tube body, characterized by: The upper pipe body and the lower pipe body are both provided with a hollow pipe, a first heat preservation layer, a second heat preservation layer and an outer protective layer from inside to outside, the first heat preservation layer is arranged on the surface of the hollow pipe, the second heat preservation layer is arranged on the surface of the first heat preservation layer, the outer protective layer is arranged on the surface of the second heat preservation layer, the thickness of the first heat preservation layer and the second heat preservation layer is greater than the thickness of the hollow pipe, the upper pipe body and the lower pipe body are both sleeved with a tensile armor layer, and the surface of the tensile armor layer is wound with a plurality of metal bands.

2. A rubber foamed tube according to claim 1, characterized in that: The surface of the upper pipe body is inwardly recessed to form a positioning groove, the positioning groove extends along the length direction of the upper pipe body, the positioning groove is provided with an adhesive layer, the surface of the lower pipe body is outwardly protruded to extend to form a positioning strip, the positioning strip extends along the length direction of the lower pipe body, and the positioning strip is adhesively connected with the positioning groove through the adhesive layer.

3. A rubber foamed tube according to claim 1, characterized in that: The outer protective layer is made of rubber material, and the thickness of the outer protective layer is greater than the sum of the first heat preservation layer and the second heat preservation layer.

4. A foamed tube according to any one of claims 1 to 3, wherein: The first heat preservation layer is made of mineral wool material, and the second heat preservation layer is made of silicate cotton material.

5. A rubber foamed tube according to claim 2, wherein: The cross sections of the positioning groove and the positioning strip are both semicircular in shape.

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