A high temperature resistant sealing rubber hose

Abstract

The utility model discloses a high temperature resistant sealing rubber hose, which comprises an inner lining layer, a protective layer, a first reinforcement layer, a second reinforcement layer, and an outer covering layer in order from the inside to the outside; wherein an inner rubber layer is arranged between the inner lining layer and the protective layer; a first middle rubber layer is arranged between the protective layer and the first reinforcement layer; a second middle rubber layer is arranged between the first reinforcement layer and the second reinforcement layer; and an outer rubber layer is arranged between the second reinforcement layer and the outer covering layer. The utility model has the properties of high temperature resistance, corrosion resistance, high sealing, high pressure resistance, super softness, etc., and can be applied to environments with relatively harsh conditions for liquid working medium transportation.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure rubber hoses, in particular to a high-temperature resistant sealing rubber hose. Background Art

[0002] Traditional hydraulic hoses generally include an inner rubber layer, a skeleton layer and an outer rubber layer. The inner rubber layer allows the conveying medium to withstand pressure and protects the steel wire or wire fiber from erosion, the outer rubber layer protects the steel wire from damage, and the skeleton layer mainly plays a reinforcing role.

[0003] However, the application scenarios of existing hydraulic hoses are limited. They are not convenient for use in harsh working negative pressure environments, and they cannot have the properties of high temperature resistance, corrosion resistance, high sealing, high pressure resistance, and ultra-softness. Utility Model Content

[0004] The utility model aims to provide a high temperature resistant sealing rubber hose to solve the problem that the conventional rubber hose cannot be used in the environment with harsh negative pressure.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a high temperature resistant sealing rubber hose, which comprises an inner lining layer, a protective layer, a first reinforcement layer, a second reinforcement layer, and an outer covering layer in sequence from the inside to the outside;

[0007] An inner rubber layer is arranged between the inner lining layer and the protective layer; a first middle rubber layer is arranged between the protective layer and the first reinforcement layer; a second middle rubber layer is arranged between the first reinforcement layer and the second reinforcement layer; and an outer rubber layer is arranged between the second reinforcement layer and the outer covering layer.

[0008] Furthermore, the material of the lining layer is PTFE.

[0009] Furthermore, the protective layer is a steel wire mesh.

[0010] Furthermore, the first reinforcement layer and the second reinforcement layer are both steel wire winding layers.

[0011] Furthermore, the outer covering layer is made of polyurethane.

[0012] Furthermore, the inner rubber layer, the first middle rubber layer, the second middle rubber layer, and the outer rubber layer are all made of airtight rubber.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model has the properties of high temperature resistance, corrosion resistance, high sealing, high pressure resistance, super softness, etc., and can be applied to environments with relatively harsh conditions for conveying liquid working media. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the high temperature resistant sealing rubber hose of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle.

[0018] Explanation of the reference numerals: 1 - inner lining layer; 2 - inner rubber layer; 3 - protective layer; 4 - first middle rubber layer; 5 - first reinforcing layer; 6 - second middle rubber layer; 7 - second reinforcing layer; 8 - outer rubber layer; 9 - outer covering layer. DETAILED DESCRIPTION

[0019] This embodiment discloses a high temperature resistant sealing rubber hose, which includes, from inside to outside, an inner lining layer 1, a protective layer 3, a first reinforcement layer 5, a second reinforcement layer 7, and an outer covering layer 9;

[0020] In this embodiment, the material of the inner lining layer 1 is PTFE, which has the following properties:

[0021] (1) High temperature resistance, the working temperature is up to 250℃, and the long-term use temperature is 200-260℃; (2) Low temperature resistance, with good mechanical toughness; even if the temperature drops to -196℃, it can maintain an elongation of 5% and remain soft at -100 degrees; (3) Corrosion resistance, inert to most chemicals and solvents, resistant to strong acids and alkalis, water and various organic solvents; (4) High lubricity, the lowest friction coefficient among solid materials. It has the smallest friction coefficient among plastics (0.04); smoother than ice; (5) Non-toxic, physiologically inert, no adverse reactions when implanted in the body as artificial blood vessels and organs for a long time; (6) Aging resistance, radiation resistance and low permeability: the surface and performance remain unchanged after long-term exposure to the atmosphere; (7) Anti-oxidation, resistant to corrosion by strong oxidants; (7) Insulation, excellent electrical properties, an ideal Class C insulation material, its electrical insulation is not affected by temperature.

[0022] In this embodiment, the protective layer 3 is a steel wire braided mesh; the first reinforcement layer 5 and the second reinforcement layer 7 are both steel wire winding layers; so that the hose has the function of resisting high pressure.

[0023] In this embodiment, the outer coating 9 is made of polyurethane; the properties of the outer coating 9 are:

[0024] 1) Polyurethane has high mechanical strength and good wear resistance; 2) The polyurethane outer coating has good elasticity and excellent recovery; 3) The outer coating has good bonding performance; 4) Good low-temperature flexibility; 5) Good resistance to biological aging and weathering, with a service life of up to 15 to 20 years.

[0025] In this embodiment, Figure 2 As shown, the inner lining layer 1 and the protective layer 3 are connected via an inner rubber layer 2; the protective layer 3 and the first reinforcement layer 5 are connected via a first middle rubber layer 4; the first reinforcement layer 5 and the second reinforcement layer 7 are connected via a second middle rubber layer 6; and the second reinforcement layer 7 and the outer covering layer 9 are connected via an outer rubber layer 8.

[0026] Furthermore, the inner rubber layer 2, the first middle rubber layer 4, the second middle rubber layer 6, and the outer rubber layer 8 are all made of airtight rubber;

[0027] The performance of airtight glue:

[0028] 1) Chlorobutyl rubber is a copolymer of isobutylene and a small amount of chloroisoprene, referred to as CIIR. Chlorobutyl rubber has good chemical stability and heat resistance, and its degradation under high temperature for a long time is relatively low. And the vulcanized rubber has a tight structure, so it has good flex resistance. It has good aging resistance and weather resistance in atmospheric environment.

[0029] 2) The air permeability of chlorinated butyl rubber is extremely low and its glass transition temperature is low. At 24°C, the air permeability of chlorinated butyl rubber is only 1 / 9 of that of styrene-butadiene rubber and 1 / 4 of that of natural rubber.

[0030] 3) Chlorobutyl rubber has all the inherent properties of butyl rubber, and also has a series of advantages such as vulcanization diversity, fast vulcanization speed, can be co-vulcanized with other rubbers, is more heat-resistant, and has small compression deformation.

[0031] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A high temperature resistant sealing rubber hose, characterized in that: The invention comprises, from the inside to the outside, an inner lining layer (1), a protective layer (3), a first reinforcement layer (5), a second reinforcement layer (7), and an outer covering layer (9); An inner rubber layer (2) is arranged between the inner lining layer (1) and the protective layer (3); a first middle rubber layer (4) is arranged between the protective layer (3) and the first reinforcing layer (5); a second middle rubber layer (6) is arranged between the first reinforcing layer (5) and the second reinforcing layer (7); and an outer rubber layer (8) is arranged between the second reinforcing layer (7) and the outer covering layer (9).

2. The high temperature resistant sealing rubber hose according to claim 1, characterized in that: The material of the inner lining layer (1) is PTFE.

3. The high temperature resistant sealing rubber hose according to claim 1, characterized in that: The protective layer (3) is a steel wire braided mesh.

4. The high temperature resistant sealing rubber hose according to claim 1, characterized in that: The first reinforcement layer (5) and the second reinforcement layer (7) are both steel wire wound layers.

5. The high temperature resistant sealing rubber hose according to claim 1, characterized in that: The outer covering layer (9) is made of polyurethane.

6. The high temperature resistant sealing rubber hose according to claim 1, characterized in that: The material of the inner rubber layer (2), the first middle rubber layer (4), the second middle rubber layer (6), and the outer rubber layer (8) is all airtight rubber.

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