High-temperature-resistant and high-air-tightness rubber hose

Abstract

The utility model relates to a rubber hose with high temperature resistance and high air tightness, the rubber hose sequentially comprises an inner rubber layer, a plurality of steel wire winding layers, a fiber braid layer and an outer rubber layer from inside to outside, the number of the steel wire winding layers is multiple, and aluminum foil barrier layers are arranged between every two adjacent steel wire winding layers and between the steel wire winding layers and the fiber braid layer; the steel wire winding layer is formed by weaving two steel wire ropes wound on the outer surface of the inner rubber layer in the opposite directions, and the two steel wire ropes are connected in an adhesive mode. According to the high-temperature-resistant and high-air-tightness rubber hose, the aluminum foil barrier layers are arranged between the steel wire winding layers and between the steel wire winding layers and the fiber woven layer, and a hot winding mode is adopted, so that the heat insulation performance of the hose is remarkably improved, the internal structure can be more effectively protected in a high-temperature environment, heat conduction is reduced, and the service life of the hose is prolonged. The stability of the hose is kept; the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber hoses, in particular to a rubber hose with high temperature resistance and high air tightness. Background Art

[0002] The existing rubber hose technology has been widely applied in multiple fields, such as industries, agriculture, construction, and automotive industries. These hoses are usually designed with a basic multi-layer structure, including an inner rubber layer, a reinforcement layer (such as steel wire braiding or fiber braiding), and an outer rubber layer, to provide basic pressure resistance, corrosion resistance, and certain temperature resistance. However, they may show performance degradation, such as hardening, cracking, or weakened air tightness, in extreme temperature and high-pressure environments, especially during continuous high-temperature operations.

[0003] In the prior art, to improve the temperature resistance of rubber hoses, researchers have tried to use high-temperature-resistant rubber materials, such as fluororubber and silicone rubber. These materials can maintain good elasticity and chemical stability within a certain temperature range. However, the cost of these materials is relatively high, and there may still be performance limitations at extremely high temperatures. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rubber hose with high temperature resistance and high air tightness, aiming to facilitate the improvement of the high temperature resistance performance of the rubber hose.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a rubber hose with high temperature resistance and high air tightness. The rubber hose sequentially includes an inner rubber layer, a steel wire winding layer, a fiber braiding layer, and an outer rubber layer from inside to outside. The steel wire winding layer is provided with multiple layers, and an aluminum foil barrier layer is arranged between adjacent two layers of the steel wire winding layer and between the steel wire winding layer and the fiber braiding layer;

[0006] The steel wire winding layer is woven by two steel wire ropes wound around the outer surface of the inner rubber layer in opposite directions, and the two steel wire ropes are adhesively connected to each other.

[0007] Further improvement lies in that the aluminum foil barrier layer is processed by a thermal winding method.

[0008] Further improvement lies in that the bonding edge of the aluminum foil barrier layer forms a crimp.

[0009] Further improvement lies in that the width of the crimp is 10 ± 3 mm.

[0010] Further improvement lies in that a cloth layer is arranged between the steel wire winding layer and the inner rubber layer, and the cloth layer is wrapped around the outer side of the inner rubber layer in a mesh shape by an inclined winding method.

[0011] Further improvement lies in that the material of the cloth layer is a high-strength fiber braided material.

[0012] A further improvement lies in that the material of the cloth sandwich layer is one of nylon, polyester, and synthetic fiber.

[0013] A further improvement lies in that the diagonal winding angle of the cloth sandwich layer is 30 degrees to 60 degrees.

[0014] A further improvement lies in that an outer covering layer is coated on the outside of the outer rubber layer, and the material of the outer rubber layer is polyurethane.

[0015] A further improvement lies in that a reinforcing layer is provided between the outer rubber layer and the outer covering layer, and the reinforcing layer is woven from fiber wires with glue.

[0016] The beneficial effects of a rubber hose with high temperature resistance and high airtightness provided by the present utility model are as follows:

[0017] Compared with the prior art, for a rubber hose with high temperature resistance and high airtightness of the present utility model, by arranging aluminum foil barrier layers between steel wire winding layers and between the steel wire winding layer and the fiber braided layer, and adopting a hot winding method for treatment, the heat insulation performance of the hose is significantly improved, so that the internal structure can be more effectively protected in a high temperature environment, heat conduction is reduced, and the stability of the hose is maintained and the service life is extended.

[0018] In addition, the edges of the aluminum foil barrier layer are subjected to hemming treatment, and the hemming width is controlled within 10±3mm, which not only ensures the sealing effect of the barrier layer, but also prevents gas leakage caused by edge damage during use, and enhances the overall airtight performance.

[0019] The method of double steel wire reverse winding and adhesive connection, as well as the diagonally wound high-strength fiber braided cloth sandwich layer, not only improve the compressive capacity of the hose, but also increase its anti-twisting and anti-stretching performance. The optimization of the diagonal winding angle from 30 degrees to 60 degrees further improves the flexibility of the hose and its ability to adapt to complex installation environments.

[0020] The cloth sandwich layer uses high-strength materials such as nylon, polyester or synthetic fiber, and these materials have good chemical corrosion resistance and wear resistance, ensuring that the hose can maintain a stable working state under harsh conditions.

[0021] The polyurethane outer covering layer on the outside of the outer rubber layer provides additional wear and weather resistance protection, enhances the surface hardness of the hose and its ability to resist external damage, while the reinforcing layer between the outer rubber layer and the outer covering layer, which is woven from fiber wires with glue, further consolidates the overall structure of the hose, improves the anti-burst pressure and service life. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of a high-temperature resistant and high-airtight rubber hose provided by an embodiment of the present utility model.

[0024] In the figure: 1, inner rubber layer; 2, fabric layer; 3, steel wire winding layer; 4, aluminum foil barrier layer; 5, fiber braid layer; 6, outer rubber layer; 7, reinforcing layer; 8, outer covering layer. Specific embodiments

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved in this embodiment clearer, the following further details this embodiment in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this embodiment and are not used to limit this embodiment.

[0026] Please refer to Figure 1 together, and now a high-temperature resistant and high-airtight rubber hose provided by this embodiment will be described. A high-temperature resistant and high-airtight rubber hose in this embodiment includes, from inside to outside, an inner rubber layer 1, a steel wire winding layer 3, a fiber braid layer 5, and an outer rubber layer 6 in sequence.

[0027] Among them, multiple layers of steel wire winding layer 3 are provided, and an aluminum foil barrier layer 4 is provided between adjacent two layers of steel wire winding layer 3 and between the steel wire winding layer 3 and the fiber braid layer 5. And preferably, the steel wire winding layer 3 is woven by two steel wire ropes wound around the outer surface of the inner rubber layer 1 in opposite directions, and the two steel wire ropes are adhesively connected.

[0028] A high-temperature resistant and high-airtight rubber hose in this embodiment, by providing an aluminum foil barrier layer 4 between the steel wire winding layers 3 and between the steel wire winding layer 3 and the fiber braid layer 5, and adopting a hot winding method for treatment, significantly improves the heat insulation performance of the hose, so as to more effectively protect the internal structure in a high-temperature environment, reduce heat conduction, maintain the stability of the hose and extend its service life.

[0029] Based on the overall description of the above structure, an exemplary structure of a high-temperature resistant and high-airtight rubber hose in this embodiment is shown in the figure. From the center to the outside along the radial direction of the rubber hose, it includes an inner rubber layer 1, a steel wire winding layer 3, a fiber braid layer 5, and an outer rubber layer 6 in sequence.

[0030] Among them, the inner rubber layer 1 is made of butyl rubber, which has certain toughness and support strength. The steel wire winding layer 3 is woven by two steel wire ropes wound around the outer surface of the inner rubber layer 1 in opposite directions. One steel wire rope is spirally wound around the outer periphery of the inner rubber layer 1 from left to right along the axial direction of the horizontally placed rubber hose; the other steel wire rope is spirally wound around the outer periphery of the inner rubber layer 1 from right to left and covers the previous steel wire rope, thus forming a steel wire braided layer.

[0031] To ensure the connection stability between the two steel wire ropes, as a preferred implementation manner, an adhesive is provided between the two steel wire ropes to fix the relative positions of the two steel wire ropes. At the same time, to ensure the solid connection between the steel wire winding layer 3 and the inner rubber layer 1 of the rubber hose, an adhesive is provided between the steel wire winding layer 3 and the inner rubber layer 1 for connection and fixation between the two. Preferably, the adhesive is Chemlok. Chemlok 205# and Chemlok 220# are evenly coated once each between the two steel wire ropes; Chemlok 205# and Chemlok 220# are also evenly coated once each between the aluminum foil barrier layer and the steel wire winding layer.

[0032] In this embodiment, multiple layers of the steel wire winding layer 3 are provided, and an aluminum foil barrier layer 4 is provided between two adjacent steel wire winding layers 3 and between the steel wire winding layer 3 and the fiber braided layer 5 to achieve the effect of isolating high temperature. Among them, the aluminum foil barrier layer 4 is processed by heat wrapping. By heating and vulcanizing the aluminum foil barrier layer 4, the material becomes soft, easy to form, and can improve the adhesiveness of the material, facilitating connection and fixation with the steel wire winding layer 3. After the aluminum foil is appropriately heated, the material is tightly and continuously wound on the surface of the steel wire winding layer 3 by mechanical or manual means. When winding, the tension should be controlled to ensure that the material fits evenly and seamlessly, while avoiding excessive stretching or wrinkling. Among them, the thickness range of the aluminum foil in the aluminum foil barrier layer 4 is from 0.01 mm to 0.1 mm, and the preferred thickness range of the aluminum foil is from 0.03 mm to 0.08 mm. The thinner the aluminum foil, the easier it is to process and form, and the relatively worse the heat insulation effect. The thicker the aluminum foil, the better the heat insulation effect, which can be selected according to actual needs.

[0033] In addition, as a preference, the bonding edge of the aluminum foil barrier layer 4 forms a crimping edge. The crimping edge treatment is to fold and compact the aluminum foil edge to form a continuous and notch-free sealing edge, which can effectively prevent gas or liquid from penetrating along the edge, improving the airtightness and liquid tightness of the entire hose. At the same time, the crimping edge increases the mechanical strength of the aluminum foil layer, making it not easy to have edge warping or tearing during use. Especially when the hose is bent, stretched, or under external pressure, the crimping edge can keep the barrier layer flat and intact, maintaining the stability of the hose structure.

[0034] Preferably, the width of the crimping edge is 10±2mm. By specifying a specific crimping edge width, the manufacturing quality of each hose can be ensured to be uniform during the production process, facilitating quality control, reducing potential problems caused by inconsistent dimensions, and improving the standardization and interchangeability of the products. In addition, the neat crimping edge also enhances the appearance quality of the product, making the hose look more professional and delicate, with higher aesthetics.

[0035] In this embodiment, to further improve the connection stability between the inner rubber layer 1 and the steel wire winding layer 3. Preferably, a fabric layer 2 is provided between the steel wire winding layer 3 and the inner rubber layer 1. When the rubber hose is used in high-pressure or dynamic applications, relative sliding may occur between the inner rubber layer 1 and the steel wire winding layer 3, resulting in structural failure. The setting of the fabric layer 2 can effectively prevent such slippage and maintain the stability between the layers. Moreover, the addition of the fabric layer 2 can increase the flexibility of the hose, making it more flexible when bent and less likely to be twisted or damaged.

[0036] Preferably, the fabric layer 2 is wrapped around the outside of the inner rubber layer 1 in a mesh form by an inclined winding method. By this method, when the hose is subjected to torsional force, the fabric layer can more effectively disperse the stress, reduce the damage to the hose structure caused by torsion, and enhance the anti-torsion ability and service life of the hose. Moreover, the inclined arrangement of the fabric layer structure can make the interaction between the layers of materials more harmonious when the hose is bent, reduce the concentration of internal stress, and thus improve the overall flexibility and bending performance of the hose. At the same time, the inclined winding fabric layer can provide a more balanced lateral supporting force. When the hose is under internal pressure, this structure can disperse the pressure more evenly, preventing the hose from expanding or deforming under high pressure.

[0037] Specifically, the inclined winding angle of the fabric layer 2 is 30 degrees to 60 degrees. When the inclined winding angle is relatively small (close to 30°), the interweaving between the fabric layers is closer, which can provide better compressive strength and stability; when the inclined winding angle is relatively large (close to 60°), the hose will be softer and more flexible. It can be specifically designed according to the actual working conditions and the requirements for the rubber hose to meet the working conditions.

[0038] As a further improvement, the material of the fabric layer 2 is a high-strength fiber braided material to have higher mechanical strength and stability. Preferably, the material of the fabric layer 2 is one of nylon, polyester, and synthetic fiber.

[0039] In this embodiment, as a preferred implementation, the material of the outer rubber layer 6 is polyurethane or polyether. The polyurethane material has strong wear resistance, which can provide additional wear protection for the internal layers of the rubber hose, enhancing the overall surface hardness and the ability to resist external damage of the rubber hose. In addition, a reinforcing layer 7 is provided between the outer rubber layer 6 and the outer covering layer 8. The reinforcing layer 7 is woven from fiber wires with glue, further consolidating the overall structure of the hose and improving the burst pressure resistance and service life.

[0040] For a rubber hose with high temperature resistance and high airtightness in this embodiment, by setting an aluminum foil barrier layer 4 between the steel wire winding layers 3 and between the steel wire winding layer 3 and the fiber braided layer 5, and adopting a hot winding method for treatment, the heat insulation performance of the hose is significantly improved.

[0041] The above are only the preferred embodiments of this embodiment, and are not intended to limit this embodiment. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this embodiment shall be included within the protection scope of this embodiment.

Claims

1. A high-temperature resistant and high-airtight rubber hose, characterized in that: The rubber hose sequentially includes an inner rubber layer (1), a steel wire winding layer (3), a fiber braiding layer (5) and an outer rubber layer (6) from inside to outside. The steel wire winding layer (3) is provided with multiple layers, and an aluminum foil barrier layer (4) is provided between adjacent two layers of the steel wire winding layer (3) and between the steel wire winding layer (3) and the fiber braiding layer (5); The steel wire winding layer (3) is braided by two steel wire ropes wound around the outer surface of the inner rubber layer (1) in opposite directions, and the two steel wire ropes are adhesively connected to each other.

2. The high-temperature resistant and high-airtight rubber hose according to claim 1, characterized in that The aluminum foil barrier layer (4) is processed by a hot winding method.

3. The high-temperature resistant and high-airtight rubber hose according to claim 2, characterized in that The bonding edge of the aluminum foil barrier layer (4) forms a pressed edge.

4. The high-temperature resistant and high-airtight rubber hose according to claim 3, characterized in that The width of the pressed edge is 10 ± 2 mm.

5. The high-temperature resistant and high-airtight rubber hose according to claim 1, characterized in that A cloth sandwich layer (2) is provided between the steel wire winding layer (3) and the inner rubber layer (1), and the cloth sandwich layer (2) is wrapped around the outer side of the inner rubber layer (1) in a mesh shape by an inclined winding method.

6. The high-temperature resistant and high-airtight rubber hose according to claim 5, characterized in that The material of the cloth sandwich layer (2) is a high-strength fiber braided material.

7. The high-temperature resistant and high-airtight rubber hose according to claim 6, characterized in that The material of the cloth sandwich layer (2) is one of nylon, polyester, and synthetic fiber.

8. The high-temperature resistant and high-airtight rubber hose according to claim 5, characterized in that The inclined winding angle of the cloth sandwich layer (2) is 30 degrees to 60 degrees.

9. The high-temperature resistant and high-airtight rubber hose according to claim 1, characterized in that An outer covering layer (8) is wrapped outside the outer rubber layer (6), and the material of the outer rubber layer (6) is polyurethane.

10. The high-temperature resistant and high-airtight rubber hose according to claim 9, characterized in that A reinforcing layer (7) is provided between the outer rubber layer (6) and the outer covering layer (8), and the reinforcing layer (7) is braided by fiber wires with glue.

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