Double-layer co-extrusion hose

Abstract

The utility model discloses a double-layer co-extrusion hose which comprises a hose body assembly, a steel wire assembly and a coating layer assembly, an outer spiral protrusion is arranged on the outer wall of a hose outer skin, an inner spiral groove is formed in the hose outer skin, the steel wire assembly is embedded in the inner spiral groove, and the coating layer assembly is attached to the outer spiral protrusion. According to the utility model, the coating layer component is formed on the hose main body component through a double-layer co-extrusion technology, and the coating recess on one side of the co-extrusion layer is coated on the outer spiral bulge to form a wear-resistant outer layer protection structure, so that the physical property of the hose is improved, the abrasion and damage of the hose wall caused by friction and shearing are effectively prevented, and the service life of the hose is prolonged; the steel wire is embedded in the containing inner cavity of the rib outer skin, meanwhile, the rib outer skin is connected in the inner spiral groove of the hose body assembly in a sleeved mode to form a spiral auxiliary supporting structure of the hose, collapse and deformation of the inner space caused by the fact that the hose is pressed are avoided, and therefore the practicability of the hose is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of extruded hoses, in particular to a double-layer co-extruded hose. Background Art

[0002] Extruded hose, also known as extruded spiral hose, refers to a hose with spiral inner and outer walls made of plastic, rubber and other materials through extrusion molding technology. During the manufacturing process of this hose, the material is heated to a molten state and then extruded through a specific mold to form a hose with a spiral structure. The prepared hose has high flexibility and can be bent at different angles according to the needs of the application scenario, making it more suitable for complex pipeline layout environments. Existing extruded hoses can basically meet daily use needs, but are limited by the basic structure of the hose, resulting in poor overall physical properties of the pipe fittings, which can easily cause wear on the external pipe wall during use, thereby affecting the service life of the hose. The spiral structure lacks auxiliary support, and the pressure on the pipe can easily cause the internal space to collapse and deform, thus affecting the practicality of the hose. Therefore, it is necessary to design a double-layer co-extruded hose. Utility Model Content

[0003] The purpose of the utility model is to provide a double-layer co-extruded hose to solve the problem that the existing extruded hose is limited by the basic structure of the hose, resulting in poor overall physical properties of the hose, which is easy to cause wear of the external tube wall during use, thereby shortening the service life of the hose; and the spiral structure lacks auxiliary support, and the pressure on the pipe easily causes the internal space to collapse and deform, affecting the practicality of the hose.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a double-layer co-extruded hose, including a hose main body assembly, a steel wire assembly and a covering layer assembly, the hose main body assembly is composed of a hose outer skin, an inner spiral groove and an outer spiral protrusion, the outer wall of the hose outer skin is provided with an outer spiral protrusion, and the inside of the hose outer skin is provided with an inner spiral groove, the steel wire assembly is nested in the inner spiral groove, and the covering layer assembly is adhered to the outer spiral protrusion.

[0005] As a further technical solution of the present invention, the coating layer assembly consists of a co-extruded layer and a coating recess, and a coating recess is provided on a side of the co-extruded layer close to the hose body assembly.

[0006] As a further technical solution of the present invention, the covering recess is sleeved on the outer spiral protrusion.

[0007] As a further technical solution of the present invention, the steel wire assembly consists of a rib outer skin, an accommodating inner cavity and a steel wire.

[0008] As a further technical solution of the present invention, an accommodating inner cavity is provided in the outer skin of the rib.

[0009] As a further technical solution of the present invention, a steel wire is nested in the accommodating inner cavity.

[0010] As a further technical solution of the present invention, the outer skin of the rib is sleeved in the inner spiral groove.

[0011] The double-layer co-extruded hose provided by the utility model has the following advantages: a coating layer assembly is formed on the hose main body assembly by double-layer co-extrusion technology, and the coating depression on one side of the co-extruded layer is coated on the outer spiral protrusion to form a wear-resistant outer layer protective structure, thereby improving the physical properties of the hose, effectively preventing the wear and damage of the pipe wall caused by friction and shearing, and extending the service life of the hose; by nesting the steel wire in the accommodating inner cavity of the rib outer skin, and at the same time, the rib outer skin is sleeved in the inner spiral groove of the hose main body assembly to form a spiral auxiliary support structure of the hose, thereby avoiding the collapse and deformation of the internal space caused by pressure on the hose, thereby ensuring the practicality of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of area A in the middle;

[0015] Figure 3 It is a partial structural diagram of the utility model;

[0016] Figure 4 for Figure 3 A partial enlarged view of the middle B area;

[0017] Figure 5 for Figure 3 A partial enlarged view of the middle C area;

[0018] Figure 6 This is a three-dimensional schematic diagram of the co-extruded layer in the present invention.

[0019] In the figure: 1. Hose main body assembly; 2. Steel wire assembly; 3. Coating layer assembly; 11. Hose outer skin; 12. Inner spiral groove; 13. Outer spiral protrusion; 21. Rib outer skin; 22. Accommodating inner cavity; 23. Steel wire; 31. Co-extrusion layer; 32. Coating depression. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] Please see the attached Figure 1 -Attached Figure 6 The utility model provides an embodiment: a double-layer co-extruded hose, including a hose main body component 1, a steel wire component 2 and a covering layer component 3, the hose main body component 1 is composed of a hose outer skin 11, an inner spiral groove 12 and an outer spiral protrusion 13, the outer wall of the hose outer skin 11 is provided with an outer spiral protrusion 13, and the inner part of the hose outer skin 11 is provided with an inner spiral groove 12, the steel wire component 2 is nested in the inner spiral groove 12, the outer spiral protrusion 13 is attached with a covering layer component 3, the covering layer component 3 is composed of a co-extruded layer 31 and a covering recess 32, the co-extruded layer 3 A covering recess 32 is provided on one side of the hose main assembly 1; the covering recess 32 is sleeved on the outer spiral protrusion 13; the steel wire assembly 2 consists of a rib outer skin 21, an accommodating inner cavity 22, and a steel wire 23; the rib outer skin 21 is provided with an accommodating inner cavity 22; the steel wire 23 is nested in the accommodating inner cavity 22; the rib outer skin 21 is sleeved in the inner spiral groove 12, and the rib outer skin 21 is provided on the outside of the steel wire 23 to provide a buffer connection between the steel wire 23 and the hose main assembly 1, preventing the steel wire 23 from directly contacting the inside of the hose and causing wear;

[0023] Specifically, in use, the cladding layer assembly 3 is formed on the hose body assembly 1 by a double-layer co-extrusion technology, and the cladding recess 32 on one side of the co-extrusion layer 31 clads the outer spiral protrusion 13 to form a wear-resistant outer layer protection structure, which improves the physical properties of the hose, effectively prevents the hose wall from being worn and damaged due to friction and shearing, and prolongs the service life of the hose; the steel wire 23 is nested in the containing inner cavity 22 of the rib skin 21, and at the same time, the rib skin 21 is sleeved in the inner spiral groove 12 of the hose body assembly 1 to form a spiral auxiliary support structure of the hose, which avoids the collapse and deformation of the internal space of the hose caused by pressure, thereby ensuring the practicability of the hose.

[0024] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e. they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement without creative labor.

[0026] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-layer co-extruded hose comprising a hose body assembly (1), a steel wire assembly (2) and a covering layer assembly (3), characterized in that: The hose main body assembly (1) is composed of a hose outer skin (11), an inner spiral groove (12) and an outer spiral protrusion (13); the outer wall of the hose outer skin (11) is provided with the outer spiral protrusion (13), and the inner spiral groove (12) is provided inside the hose outer skin (11); a steel wire assembly (2) is nested in the inner spiral groove (12), and a covering layer assembly (3) is attached to the outer spiral protrusion (13); the steel wire assembly (2) is composed of a rib outer skin (21), an accommodating inner cavity (22) and a steel wire (23).

2. The double-layer co-extruded hose according to claim 1, characterized in that: The coating layer assembly (3) consists of a co-extruded layer (31) and a coating recess (32), and the coating recess (32) is provided on one side of the co-extruded layer (31) close to the hose body assembly (1).

3. The double-layer co-extruded hose according to claim 2, characterized in that: The covering recess (32) is sleeved on the outer spiral protrusion (13).

4. The double-layer co-extruded hose according to claim 1, characterized in that: An accommodating inner cavity (22) is provided in the rib outer skin (21).

5. The double-layer co-extruded hose according to claim 4, characterized in that: A steel wire (23) is nested in the accommodating inner cavity (22).

6. The double-layer co-extruded hose according to claim 1, characterized in that: The rib outer skin (21) is sleeved in the inner spiral groove (12).

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