High-strength pressure-resistant fire hose

Abstract

The utility model relates to the related field of fire hoses, in particular to a high-strength pressure-resistant fire hose which comprises a first fire hose base body, an EVA (Ethylene Vinyl Acetate) protective layer, a reinforced braided layer, a second fire hose base body, a TPU (Thermoplastic Polyurethane) protective layer, a polyurethane layer, braided wires and the like. The EVA protective layer and the reinforced braided layer are arranged, the reinforced braided layer is matched with the polyurethane layer to improve the strength of the fire hose, the fire hose can be effectively prevented from being damaged by water pressure impact, and the EVA protective layer has good elasticity and high adhesive capacity, so that the pressure resistance of the fire hose can be effectively improved, and the service life of the fire hose is prolonged. Bursting of the fire hose due to impact of high-pressure water flow is reduced, the service life of the fire hose is prolonged, and the practicability of the fire hose is improved.

Description

Technical Field

[0001] The utility model relates to the field of fire hoses, in particular to a high-strength and pressure-resistant fire hose. Background Art

[0002] The fire hose is one of the commonly used tools in firefighting. It is mainly used to transport high-pressure water or other fire extinguishing agents. When in use, one end of the fire hose is usually connected to a fire hydrant or fire pump, and the other end is connected to a fire hose gun or nozzle and other equipment to form a complete water supply system. When the fire pump is turned on, the high-pressure water flow can be transported to the fire source through the hose for fire extinguishing operations.

[0003] The strength and pressure resistance of existing fire hoses are reduced. When the fire hoses are transporting water under high pressure, their strength is low and the pressure resistance is poor. They may burst or delaminate under the impact of high-pressure water flow, which not only makes it difficult for the fire hoses to transport water stably, but also easily reduces the service life of the fire hoses and reduces the practicality of the fire hoses. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a high-strength and pressure-resistant fire hose to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-strength and pressure-resistant fire hose, comprising a first fire hose substrate, the inner circle of which is coated with an EVA protective layer, and the outer surface of the first fire hose substrate is provided with a reinforced braided layer, a polyurethane layer, a second fire hose substrate and a TPU protective layer in sequence from the inside to the outside, and the reinforced braided layer is woven by a plurality of criss-crossed braided wires.

[0006] Preferably, the braided wire includes high-strength polyethylene fibers, aramid fiber filaments and nylon fiber filaments that are entangled with each other, and the inner and outer surfaces of the high-strength polyethylene fibers, aramid fiber filaments and nylon fiber filaments are respectively connected to the first fire hose substrate and the polyurethane layer.

[0007] Preferably, the thickness of the reinforced braided layer is 0.3 mm to 0.7 mm.

[0008] Beneficial effects of the utility model:

[0009] The utility model provides an EVA protective layer and a reinforced braided layer, and improves the strength of the fire hose by strengthening the braided layer and cooperating with the polyurethane layer, which can effectively prevent the fire hose from being damaged by water pressure impact. The EVA protective layer has good elasticity and strong adhesion ability, which can effectively improve the pressure resistance of the fire hose, reduce the fire hose from bursting due to the impact of high-pressure water flow, increase the service life of the fire hose, and improve the practicability of the fire hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the braided wire structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the side structure of the braided wire of the utility model.

[0013] Among them: the first fire hose substrate -1, EVA protective layer -2, reinforced braided layer -3, the second fire hose substrate -4, TPU protective layer -5, polyurethane layer -6, braided wire -7, high-strength polyethylene fiber -71, aramid fiber filament -72, nylon fiber filament -73. DETAILED DESCRIPTION

[0014] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0015] like Figure 1 As shown, the utility model provides a high-strength and pressure-resistant fire hose, comprising a first fire hose base 1;

[0016] As shown in the figure, in this embodiment, the inner circle of the first fire hose substrate 1 is coated with an EVA protective layer 2, and the outer surface of the first fire hose substrate 1 is sequentially provided with a reinforcing braided layer 3 from the inside to the outside, which is used to strengthen the fire hose as a whole so that the fire hose can withstand a higher pressure water flow, a polyurethane layer 6, a second fire hose substrate 4 and a TPU protective layer 5, and the reinforcing braided layer 3 is woven by a plurality of crisscross braided wires 7;

[0017] In this embodiment, the braided wire 7 includes high-strength polyethylene fibers 71, aramid fiber filaments 72 and nylon fiber filaments 73 that are intertwined with each other. The inner and outer surfaces of the high-strength polyethylene fibers 71, aramid fiber filaments 72 and nylon fiber filaments 73 are respectively connected to the first fire hose substrate 1 and the polyurethane layer 6;

[0018] In this embodiment, the thickness of the reinforced braided layer 3 is 0.5 mm, which is moderate and can effectively strengthen the fire hose;

[0019] The setting of the TPU protective layer 5 can effectively improve the wear resistance and tear resistance of the fire hose and reduce the damage of the fire hose. The reinforced braided layer 3 woven from high-strength polyethylene fibers 71, aramid fiber filaments 72 and nylon fiber filaments 73 has strong strength, high temperature resistance and puncture resistance. It can effectively improve the strength of the fire hose and reduce the rupture and damage of the fire hose when conveying high-pressure water when the polyurethane layer 6 is combined. The EVA protective layer 2 has good flexibility and elasticity, which can improve the pressure resistance of the fire hose and is conducive to the stable conveying of high-pressure water by the fire hose.

[0020] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-strength and pressure-resistant fire hose, comprising a first fire hose base; It is characterized in that The inner circle of the first fire hose substrate is coated with an EVA protective layer, and the outer surface of the first fire hose substrate is provided with a reinforcing braided layer, a polyurethane layer, a second fire hose substrate and a TPU protective layer in sequence from the inside to the outside, and the reinforcing braided layer is woven from a plurality of criss-crossed braided wires.

2. According to claim 1, a high-strength pressure-resistant fire hose is characterized in that: The braided wire includes high-strength polyethylene fibers, aramid fiber filaments and nylon fiber filaments that are intertwined. The inner and outer surfaces of the high-strength polyethylene fibers, aramid fiber filaments and nylon fiber filaments are respectively connected to the first fire hose substrate and the polyurethane layer.

3. According to claim 1, a high-strength pressure-resistant fire hose is characterized in that: The thickness of the reinforced braided layer is 0.3 mm to 0.7 mm.

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