Spiral corrugated multilayer resin composite hose

Abstract

The utility model provides a spiral corrugated multilayer resin composite hose which comprises an inner resin layer, a spiral corrugated layer is wrapped outside the inner resin layer, an outer resin layer is wrapped outside the spiral corrugated layer, and a spiral gap is formed between the inner resin layer and the outer resin layer by the spiral corrugated layer. Belongs to the technical field of resin hoses. According to the spiral corrugated multi-layer resin composite hose, the inner pipe is of the smooth cylindrical tubular structure, and the problems that a large number of small vortexes are generated when liquid flows through due to the fact that inner pipes of composite corrugated pipes in the market directly adopt corrugated structures (wrinkles), water passing resistance is increased, and the flow speed and flow of the liquid are reduced are solved.

Description

Technical Field

[0001] The utility model relates to a spiral corrugated multi-layer resin composite hose, belonging to the technical field of resin hoses. Background Art

[0002] With the continuous development of modern industry and life needs, the performance requirements for hoses are getting higher and higher. Traditional hoses have problems such as insufficient pressure resistance, easy deformation, and short service life in certain application scenarios. Most of the multi-layer resin hoses on the market are multi-layer resin hoses made of thermoplastic resin added with fiber braided wire or wire mesh, or annular corrugated multi-layer composite hoses. The recycling rate of this hose material containing fiber braided wire or wire mesh is low, and unmanned full-automatic production is not possible. The annular corrugated hose has the limitation that it is only suitable for making resin hoses with small diameters.

[0003] Therefore, there is an urgent need in the art for a spiral corrugated multi-layer resin composite hose with strong pressure resistance, not easy to deform, and long service life. Summary of the invention

[0004] The purpose of the utility model is to solve the problems of insufficient pressure resistance, easy deformation and short service life of traditional hoses in the prior art in certain application scenarios.

[0005] In order to achieve the purpose of solving the above-mentioned problems, the technical solution adopted by the utility model is to provide a spiral corrugated multi-layer resin composite hose, including an inner resin layer, the inner resin layer is wrapped with a spiral corrugated layer, and the spiral corrugated layer is wrapped with an outer resin layer. The spiral corrugated layer forms a spiral gap between the inner resin layer and the outer resin layer, thereby improving the thermal insulation performance of the hose.

[0006] Preferably, the inner resin layer is a smooth cylindrical tubular structure.

[0007] Preferably, the inner resin layer and the spiral corrugated layer are low-permeability, high-strength resin hoses made of food-grade or medical-grade soft, high- and low-temperature-resistant plastic resin materials, and are further preferably made of reinforced polyethylene PE; the outer resin layer is an elastic resin hose that is resistant to UV and environmental corrosion, and is further preferably made of TPE.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. The inner layer of the spiral corrugated multi-layer resin composite hose of the utility model is made of soft high and low temperature resistant plastic resin material. Under normal conditions of use, the temperature resistance range of polyethylene is about -60℃~110℃, and the general working temperature is -40~90℃. It has the characteristics of corrosion resistance, wear resistance, high compressive strength, flame retardancy, good flexibility, etc. It can not only be used in general occasions, but also can be widely used in the food and pharmaceutical industries with higher requirements on hose materials; the outer layer is made of TPE material, which is a thermoplastic elastomer material, also known as thermoplastic rubber, which is an elastic resin hose resistant to UV and environmental corrosion, with good fatigue resistance and temperature resistance, excellent processing performance and low cost.

[0010] 2. The spiral corrugated multi-layer resin composite hose of the utility model has a smooth cylindrical tubular structure as the inner tube, which solves the problem that the inner tubes of the composite corrugated hoses on the market all directly adopt a corrugated structure (wrinkles), so that a large number of small vortices are generated when the liquid flows through, which increases the water resistance and reduces the flow rate and flow of the liquid.

[0011] 3. The spiral corrugated multi-layer resin composite hose of the utility model has a spiral corrugated structure, which not only has good bending performance, anti-winding and anti-twisting properties, but also has compression resistance and tensile resistance that are 1.2 times that of ordinary corrugated pipes. The spiral gap improves the thermal insulation performance of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a multi-layer composite corrugated resin hose provided in an embodiment;

[0013] Figure 2 A cross-sectional view of a multi-layer composite corrugated resin hose provided in an embodiment;

[0014] Figure numerals: 1, inner resin layer; 2, spiral corrugated layer; 3, outer resin layer. DETAILED DESCRIPTION

[0015] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:

[0016] like Figure 1-2 As shown, the utility model provides a spiral corrugated multi-layer composite hose, which includes an inner resin layer 1, a spiral corrugated layer 2, and an outer resin layer 3 from the inside to the outside. The inner resin layer 1 and the spiral corrugated layer 2 of the multi-layer resin composite structure are made of soft high and low temperature resistant plastic resin material, and the outer resin layer 3 is made of TPE material, which ensures the sealing performance, corrosion resistance and pressure resistance of the hose.

[0017] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. A spiral corrugated multi-layer resin composite hose, characterized in that: It comprises an inner resin layer, the inner resin layer is wrapped with a spiral corrugated layer, the spiral corrugated layer is wrapped with an outer resin layer, and the spiral corrugated layer forms a spiral gap between the inner resin layer and the outer resin layer.

2. The spiral corrugated multi-layer resin composite hose according to claim 1, characterized in that: The inner resin layer is a smooth cylindrical tubular structure.

3. The spiral corrugated multi-layer resin composite hose according to claim 1, characterized in that: The inner resin layer and the spiral corrugated layer are low-permeability high-strength resin hoses made of food-grade or medical-grade soft high- and low-temperature-resistant plastic resin materials; the outer resin layer is an elastic resin hose that is resistant to UV and environmental corrosion.

4. The spiral corrugated multi-layer resin composite hose according to claim 3, characterized in that: The food-grade or medical-grade soft high and low temperature resistant plastic resin material is made of reinforced polyethylene PE.

5. The spiral corrugated multi-layer resin composite hose according to claim 3, characterized in that: The outer resin layer is made of TPE material.

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