Wear-resistant metal hose assembly

Abstract

The utility model relates to the technical field of hoses, in particular to a wear-resistant metal hose assembly which comprises a metal corrugated pipe, a metal woven mesh sleeve is arranged on the outer side of the metal corrugated pipe, a protective layer is arranged between the metal woven mesh sleeve and the metal corrugated pipe, and the protective layer is composed of an outer layer and an inner layer. The outer layer is an aramid fiber woven layer, the inner layer is a spirally wound stainless steel band layer, and an alkali-free glass fiber layer is arranged between the metal woven mesh sleeve and the protective layer. Friction between the metal woven mesh sleeve and the protective layer and the alkali-free glass fiber layer filled between the metal woven mesh sleeve and the protective layer can be effectively reduced, the overall strength of the pipe body is further enhanced, and good shockproof and buffering performance is achieved through the metal corrugated pipe, the protective layer and the asbestos layer filled between the metal corrugated pipe and the protective layer. Local collision friction between the metal corrugated pipe and the protective layer is effectively reduced, and the fatigue resistance of the metal corrugated pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a metal hose assembly, and particularly relates to a wear-resistant metal hose assembly. BACKGROUND

[0002] The metal hose is an important component in the connecting pipeline of modern industrial equipment, can effectively play the roles of shock absorption and noise reduction by effective expansion and deformation of the bellows part, and can be well applied to compressors and conveying pipelines with high pressure and high vibration.

[0003] The existing wear-resistant hose kit has the problems that the existing hose may be detached due to high-strength use, the connection effect of the hose kit is poor, the hose kit cannot be applied to the connection of hoses with different diameters, the hose may be broken due to long-term dragging, and the corrosion resistance is poor.

[0004] The existing hose has the defects that the traditional hose is simply inserted or sleeved with a metal mesh, and is prone to failure due to friction, corrosion or long-term stretching. SUMMARY

[0005] The present application aims to provide a wear-resistant metal hose assembly to solve the problem that the traditional hose is simply inserted or sleeved with a metal mesh, and is prone to failure due to friction, corrosion or long-term stretching.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a wear-resistant metal hose assembly, comprising a metal bellows, a metal woven mesh sleeve is arranged on the outer side of the metal bellows, a protective layer is arranged between the metal woven mesh sleeve and the metal bellows, the protective layer is composed of an outer layer and an inner layer, the outer layer is an aramid fiber woven layer, the inner layer is a spiral-wound stainless steel belt layer, and a layer of alkali-free glass fiber layer is arranged between the metal woven mesh sleeve and the protective layer.

[0007] Preferably, the metal bellows is connected to a limiting part at both ends by welding, and the limiting part is fixedly connected to a sealing connector at an end away from the metal bellows.

[0008] Preferably, the sealing connector is made of austenitic stainless steel.

[0009] Preferably, the sealing connector is made of austenitic stainless steel.

[0010] Preferably, the sealing connector is made of austenitic stainless steel.

[0011] Preferably, the sealing connector is made of austenitic stainless steel.

[0012] Preferably, the sealing connector is made of austenitic stainless steel.

[0013] In the utility model, the metal woven mesh cover, the protective layer and the alkali-free glass fiber layer filled between the two can effectively reduce the friction between the two, further enhance the overall strength of the pipe body, the metal bellows, the protective layer and the asbestos layer filled between the two have good shockproof and buffering performance, effectively reduce the local collision and friction between the metal bellows and the protective layer, and the fatigue resistance of the metal bellows is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0015] Figure 1 It is a first perspective view of the axial side structure of the utility model;

[0016] Figure 2 It is a second perspective view of the axial side structure of the utility model;

[0017] Figure 3 It is a structure diagram of the sealing strip in the utility model;

[0018] Figure 4 It is Figure 3 the enlarged structure diagram of A in the utility model.

[0019] In the drawing: 1, metal woven mesh cover; 2, protective layer; 3, metal bellows; 4, sealing connector; 5, groove; 6, sealing strip; 7, threaded hole; 8, limiting portion. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment one: reference Figures 1-4The abrasion-resistant metal hose assembly shown comprises a metal bellows 3, the pipe wall of the metal bellows 3 is arranged in a corrugated manner, the corrugated depth is 3-8 mm, and the corrugated pitch is 10-25 mm. The corrugated structure design makes the metal bellows 3 have good flexibility, can absorb the displacement of the pipeline system caused by thermal expansion and contraction, mechanical vibration and the like to a certain extent, can withstand a certain pressure, and ensures the normal operation of the pipeline system. The outer side of the metal bellows 3 is provided with a metal woven mesh sleeve 1, the metal woven mesh sleeve 1 mainly plays a reinforcing protection role, it can improve the overall strength of the metal hose assembly, prevent the metal bellows 3 from being mechanically damaged from the outside, and at the same time withstand the pressure of the fluid in the pipeline to a certain extent, improve the pressure resistance of the hose. A protective layer 2 is arranged between the metal woven mesh sleeve 1 and the metal bellows 3, the protective layer 2 is composed of an outer layer and an inner layer, the outer layer is an aramid fiber woven layer, the aramid fiber has the characteristics of high strength, high modulus, high temperature resistance, chemical corrosion resistance and the like, can effectively enhance the wear resistance of the hose, reduce the damage of external friction to the metal bellows 3, prolong the service life of the hose, and the inner layer is a spiral-wound stainless steel belt layer, which further improves the structural strength of the protective layer 2 on the one hand, and on the other hand can prevent foreign matters and the like from entering between the metal bellows 3 and the protective layer 2, thereby playing a protective role. A layer of alkali-free glass fiber layer is arranged between the metal woven mesh sleeve 1 and the protective layer 2, the alkali-free glass fiber layer has good heat insulation performance, can reduce the heat transfer of the fluid in the pipeline to the outside, and at the same time can also play a certain buffering role, thereby reducing the influence of external impact on the metal bellows 3 and the metal woven mesh sleeve 1. A layer of asbestos layer is filled between the metal bellows 3 and the protective layer 2, the asbestos layer has good heat insulation and heat preservation performance, can effectively reduce the heat exchange between the fluid in the pipeline and the external environment, keep the relative stability of the fluid temperature in the pipeline, and at the same time can also absorb vibration to a certain extent and reduce noise. The two ends of the metal bellows 3 are connected to a limiting part 8 through welding, the limiting part 8 plays a role of limiting the excessive stretching and contraction of the metal bellows 3, ensures that the metal bellows 3 works within a safe stretching and contraction range, prevents the metal bellows 3 from being damaged due to excessive stretching and contraction, and the end of the limiting part 8 away from the metal bellows 3 is fixedly connected to a sealing connector 4. A plurality of threaded holes 7 are formed on the outer side of the sealing connector 4, the threaded holes 7 can be conveniently connected to other pipelines or equipment, realize the assembly of the pipeline system, the sealing connector 4 is made of austenitic stainless steel, the austenitic stainless steel has good corrosion resistance, can adapt to various working environments, ensures the long-term stable use of the sealing connector 4, a groove 5 is formed on the outer side of the sealing connector 4, a sealing strip 6 is arranged in the groove 5, and the sealing strip 6 is used to form a tight seal at the connecting part, prevent the fluid in the pipeline from leaking, and ensure the sealing performance and safety of the pipeline system.

[0022] The utility model discloses a metal corrugated pipe assembly, which comprises a metal corrugated pipe 3, a protective layer 2 and a metal woven mesh cover 1, wherein the metal corrugated pipe 3 is sleeved with the protective layer 2 and the metal woven mesh cover 1.

[0023] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model have been described, and are not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A wear resistant metal hose assembly comprising a metal bellow (3) characterised in that: The outer side of the metal bellows (3) is provided with a metal woven mesh cover (1), a protective layer (2) is arranged between the metal woven mesh cover (1) and the metal bellows (3), the protective layer (2) is composed of an outer layer and an inner layer, the outer layer is an aramid fiber woven layer, and the inner layer is a spiral-wound stainless steel belt layer; a layer of alkali-free glass fiber layer is arranged between the metal woven mesh cover (1) and the protective layer (2).

2. A wear-resistant metal hose assembly according to claim 1, characterised in that: Both ends of the metal bellows (3) are connected with a limiting portion (8) through welding, and one end of the limiting portion (8) away from the metal bellows (3) is fixedly connected with a sealing connector (4).

3. A wear-resistant metal hose assembly according to claim 2, characterised in that: A plurality of threaded holes (7) are formed in the outer side of the sealing connector (4), and the sealing connector (4) is made of austenitic stainless steel.

4. A wear-resistant metal hose assembly according to claim 3, characterised in that: A groove (5) is formed in the outer side of the sealing connector (4), and a sealing strip (6) is arranged in the groove (5).

5. A wear-resistant metal hose assembly according to claim 4, characterised in that: A layer of asbestos layer is filled between the metal bellows (3) and the protective layer (2).

6. A wear-resistant metal hose assembly according to claim 1, characterized in that: The pipe wall of the metal bellows (3) is in a corrugated form, the corrugation depth of the metal bellows (3) is 3-8mm, and the corrugation spacing of the metal bellows (3) is 10-25mm.

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