Wear-resistant multi-layer lining fire hose

Abstract

The utility model discloses a wear-resistant multi-layer lining fire hose which comprises a fire hose body, the fire hose body comprises a polyurethane base layer, an inner layer is arranged on the inner side of the polyurethane base layer and comprises an aluminum oxide coating and a polyamide fiber layer, an outer layer is arranged on the outer side of the polyurethane base layer, and the outer layer is made of polyurethane. The outer layer comprises a polyacrylonitrile fiber layer and a nano chromic oxide coating, the polyamide fiber layer is located on the inner side of the polyurethane base layer, the inner side of the polyamide fiber layer is coated with the aluminum oxide coating, the thickness of the aluminum oxide coating is the same as that of the polyamide fiber layer, and the thickness of the aluminum oxide coating ranges from two hundred micrometers to three hundred micrometers. The polyacrylonitrile fiber layer is located on the outer side of the polyurethane base layer, and the outer side of the polyacrylonitrile fiber layer is coated with the nanometer chromic oxide coating. By arranging the inner layer, the inner side of the fire hose body can be subjected to two-layer wear-resistant protection treatment, and by arranging the outer layer, the outer side of the fire hose body can be subjected to two-layer wear-resistant protection treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hoses, in particular to a wear-resistant multi-layer lining fire hose. Background Art

[0002] A fire hose is a hose used to transport flame-retardant liquids such as high-pressure water or foam. There are metal joints at both ends of the fire hose, which can be connected to another hose to extend the distance or to a nozzle to increase the liquid spray pressure. Since the fire hose will be pulled back and forth by firefighters or the public during actual use, there will be friction between it and the ground or other surfaces. The existing fire hose is made of only a single material, resulting in poor overall wear resistance, thereby reducing its service life. Utility Model Content

[0003] The utility model aims to provide a wear-resistant multi-layer lined fire hose to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant multi-layer lined fire hose, comprising a fire hose body, the fire hose body comprising a polyurethane base layer, an inner layer is arranged on the inner side of the polyurethane base layer, and the inner layer comprises an aluminum oxide coating and a polyamide fiber layer, and an outer layer is arranged on the outer side of the polyurethane base layer, and the outer layer comprises a polyacrylonitrile fiber layer and a nano chromium oxide coating.

[0005] Preferably, the polyamide fiber layer is located on the inner side of the polyurethane base layer, and the aluminum oxide coating is coated on the inner side of the polyamide fiber layer.

[0006] Preferably, the thickness of the aluminum oxide coating layer and the polyamide fiber layer is the same, and the thickness of the aluminum oxide coating layer is two hundred to three hundred microns.

[0007] Preferably, the polyacrylonitrile fiber layer is located on the outside of the polyurethane base layer, and the nano chromium oxide coating is coated on the outside of the polyacrylonitrile fiber layer.

[0008] Preferably, the polyacrylonitrile fiber layer and the nano-chromium oxide coating have the same thickness, and the thickness of the nano-chromium oxide coating is 300 to 500 microns.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model can provide two layers of wear-resistant protection for the inner side of the fire hose body by arranging the inner layer, and can provide two layers of wear-resistant protection for the outer side of the fire hose body by arranging the outer layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the inner layer structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the outer structure of the utility model.

[0014] In the figure: a fire hose body 1, a polyurethane base layer 11, an inner layer 12, an aluminum oxide coating 121, a polyamide fiber layer 122, an outer layer 13, a polyacrylonitrile fiber layer 131, and a nano chromium oxide coating 132. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] The fire hose body 1, polyurethane base layer 11, inner layer 12, aluminum oxide coating 121, polyamide fiber layer 122, outer layer 13, polyacrylonitrile fiber layer 131 and nano chromium oxide coating 132 components of the present application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0017] Embodiment 1:

[0018] See also Figure 1-Figure 2 In order to achieve the purpose of providing two layers of wear-resistant protection for the inner side of the fire hose body 1, the present embodiment provides the following technical solutions, which specifically disclose: a fire hose body 1, the fire hose body 1 includes a polyurethane base layer 11, an inner layer 12 is provided on the inner side of the polyurethane base layer 11, and the inner layer 12 includes an aluminum oxide coating 121 and a polyamide fiber layer 122, the polyamide fiber layer 122 is located on the inner side of the polyurethane base layer 11, and the aluminum oxide coating 121 is coated on the inner side of the polyamide fiber layer 122, the aluminum oxide coating 121 and the polyamide fiber layer 122 have the same thickness, and the thickness of the aluminum oxide coating 121 is two hundred to three hundred microns, when the transported liquid contains granular impurities, the granular impurities will cause damage to the inner side of the fire hose body 1, therefore, the aluminum oxide coating 121 can provide the first layer of wear-resistant protection for the inner side of the fire hose body 1, and the polyamide fiber layer 122 can provide the second layer of wear-resistant protection for the inner side of the fire hose body 1 after the aluminum oxide coating 121 is damaged.

[0019] Embodiment 2:

[0020] See also Figure 1 and Figure 3 In order to achieve the purpose of providing two layers of wear-resistant protection for the outer side of the fire hose body 1, the present embodiment provides the following technical solutions, which specifically disclose: the fire hose body 1, the fire hose body 1 includes a polyurethane base layer 11, an outer layer 13 is arranged on the outer side of the polyurethane base layer 11, and the outer layer 13 includes a polyacrylonitrile fiber layer 131 and a nano-chromium oxide coating 132, the polyacrylonitrile fiber layer 131 is located on the outer side of the polyurethane base layer 11, and the nano-chromium oxide coating 132 is coated on the outer side of the polyacrylonitrile fiber layer 131 ... The thickness of the nitrile fiber layer 131 and the nano-chromium oxide coating 132 is the same, and the thickness of the nano-chromium oxide coating 132 is three hundred to five hundred microns. When firefighters or the public are dragging the fire hose body 1, the fire hose body 1 will have friction with the ground or other surfaces. Therefore, the nano-chromium oxide coating 132 can provide the first layer of wear-resistant protection for the outer side of the fire hose body 1. After the nano-chromium oxide coating 132 is damaged, the polyacrylonitrile fiber layer 131 can provide the second layer of wear-resistant protection for the outer side of the fire hose body 1.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant multi-layer lined fire hose, comprising a fire hose body (1), characterized in that: The fire hose body (1) comprises a polyurethane base layer (11), an inner layer (12) is arranged on the inner side of the polyurethane base layer (11), and the inner layer (12) comprises an aluminum oxide coating (121) and a polyamide fiber layer (122), an outer layer (13) is arranged on the outer side of the polyurethane base layer (11), and the outer layer (13) comprises a polyacrylonitrile fiber layer (131) and a nano chromium oxide coating (132), the polyamide fiber layer (122) is located on the inner side of the polyurethane base layer (11), and the aluminum oxide coating (121) is coated on the polyamide fiber layer (131). On the inner side of the fiber layer (122), the aluminum oxide coating (121) and the polyamide fiber layer (122) have the same thickness, and the thickness of the aluminum oxide coating (121) is two hundred to three hundred microns. The polyacrylonitrile fiber layer (131) is located on the outer side of the polyurethane base layer (11), and the nano chromium oxide coating (132) is coated on the outer side of the polyacrylonitrile fiber layer (131). The polyacrylonitrile fiber layer (131) and the nano chromium oxide coating (132) have the same thickness, and the thickness of the nano chromium oxide coating (132) is three hundred to five hundred microns.

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