Double-layer hose with heat preservation function

Abstract

The utility model discloses a double-layer hose with a heat preservation function, which belongs to the technical field of hoses and comprises an inner-layer pipe and an outer-layer pipe, a plurality of heat preservation grooves are formed between the outer-layer pipe and the inner-layer pipe in a surrounding manner, and gas with low heat conductivity coefficient is arranged in the heat preservation grooves. The double-layer hose of the integrated structure is arranged, the outer-layer pipe is spirally connected with the inner-layer pipe, a plurality of independent heat preservation grooves are formed between the outer-layer pipe and the inner-layer pipe in a surrounding mode, and air is contained in the heat preservation grooves, so that the air in the space of the heat preservation grooves is relatively stable and does not flow, and the heat preservation effect is achieved; meanwhile, due to the structure, when one part of the outer wall of the double-layer hose is damaged, the use of other parts of the hose cannot be affected, the non-damaged double-layer hose can be recycled, and resources and cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hose, especially a double-layer hose with heat preservation function. BACKGROUND

[0002] Hose is a kind of flexible pipe, widely used in industry, civil, medical and other fields, for conveying liquid, gas, powder and other substances.

[0003] The existing hose mostly does not have heat preservation function, which will cause heat loss when conveying high-temperature or low-temperature fluid, affecting energy efficiency and use effect.

[0004] The current Chinese patent 93110371.1-double-layer heat preservation plastic pipe (channel) is especially suitable for conveying fluid needing heat preservation. It is composed of inner and outer two-layer plastic pipes, with sealed annular space maintaining a certain interval. The annular space can be filled with air or carbon dioxide gas, or can be pumped to vacuum, and a reflective layer can be coated on the inner and outer pipe walls of the annular space. This double-layer heat preservation pipe (channel) has the advantages of convenient production, light weight, high heat preservation efficiency, convenient on-site construction, corrosion resistance, wide application and low cost.

[0005] Chinese patent 200820093312.1-polypropylene plastic double-layer heat preservation pipe is divided into inner pipe and outer pipe, with connecting ribs between the inner and outer pipes. There is a gap between the two layers of pipes, forming a space. Since the air in this space is relatively stable and does not flow, heat transfer is slowed down, achieving heat preservation effect.

[0006] However, whether setting connecting ribs or annular space, the internal heat preservation cavity is axially arranged as a whole. Once a part of the outer wall of the hose is broken or damaged, air is easily entered, affecting the heat preservation effect. UTILITY MODEL CONTENTS

[0007] The utility model aims at: in order to solve the existing hose mostly does not have heat preservation function, which will cause heat loss when conveying high-temperature or low-temperature fluid, affecting energy efficiency and use effect, and the existing patent product once the outer wall of the hose is damaged, the heat preservation effect will be affected, and a double-layer hose with heat preservation function is provided.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme: a double-layer hose with heat preservation function, comprising inner layer pipe and outer layer pipe, the outer layer pipe and the inner layer pipe are surrounded to form a plurality of heat preservation grooves, and the heat preservation groove is filled with gas with low thermal conductivity.

[0009] As a further description of the above technical scheme:

[0010] The gas is air.

[0011] As a further description of the above technical solution:

[0012] The various insulation tanks are independent of each other.

[0013] As a further description of the above technical solution:

[0014] The inner tube and the outer tube are a double-layer blow-molded integrated structure.

[0015] As a further description of the above technical solution:

[0016] The inner tube and the outer tube are separate structures. The inner tube is a direct-extrusion tube, and the outer tube is a spiral blow-molded tube. The inner tube and the outer tube are connected by a connector.

[0017] As a further description of the above technical solution:

[0018] The connector is provided with a limiting groove, the bottom of the inner wall of the limiting groove abuts against the inner wall of the inner tube, and the top of the inner wall of the limiting groove is connected to the outer tube.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. In this utility model, a double-layer hose with an integrated structure is formed by blow molding. The outer tube is spirally connected to the inner tube, and several independent heat-insulating grooves are formed between the outer and inner tubes. During the blow molding process, air is retained in the heat-insulating grooves, making the air in the heat-insulating groove space relatively stable and non-flowing, thus playing a heat-insulating role. At the same time, this structure ensures that damage to part of the outer wall of the double-layer hose will not affect the use of other parts of the hose. The undamaged double-layer hose can also be recycled and reused, saving resources and costs. In addition, a foaming agent can be added to the material during the blow molding process, which reduces the weight of the hose and improves its heat-insulating effect.

[0021] 2. In this utility model, the double-layer hose can also be designed as a split structure, with the inner and outer tubes fixed by connectors. In the insulation groove formed between the inner and outer tubes, each insulation groove is reserved with air to improve the insulation effect. Moreover, whether the outer or inner tube is damaged, it can be replaced at any time, which is highly practical. At the same time, foaming agent is added during the production process of the double-layer hose, which reduces the weight of the hose and also improves the insulation effect of the hose itself. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of an embodiment of a double-layered flexible hose with heat insulation function.

[0024] Figure 2 This is a perspective view of a first embodiment of a double-layered flexible hose with heat insulation function.

[0025] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0026] Figure 4 This is a perspective view of a second embodiment of a double-layered flexible hose with heat insulation function.

[0027] Figure 5 This is a cross-sectional view of a second embodiment of a double-layered flexible hose with heat insulation function.

[0028] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0029] Legend:

[0030] 1-Inner tube; 2-Outer tube; 3-Insulation groove; 4-Connector; 5-Limiting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Example 1

[0038] Please see Figures 1-3 This utility model provides a technical solution: a double-layer flexible tube with heat preservation function, including an inner tube 1 and an outer tube 2, wherein a plurality of heat preservation grooves 3 are formed between the outer tube 2 and the inner tube 1, and the heat preservation grooves 3 are filled with a gas with low thermal conductivity.

[0039] The gas is air.

[0040] The various heat preservation tanks 3 are independent of each other.

[0041] The inner tube 1 and the outer tube 2 are a double-layer blow-molded integrated structure.

[0042] A gas with low thermal conductivity can be air.

[0043] Example 2

[0044] Please see Figures 4-6The inner tube 1 and the outer tube 2 are separate structures. The inner tube 1 is a direct extrusion tube, and the outer tube 2 is a spiral blow-molded tube. The inner tube 1 and the outer tube 2 are connected by a connector 4.

[0045] The connector 4 is provided with a limiting groove 5. The bottom of the inner wall of the limiting groove 5 abuts against the inner wall of the inner tube 1, and the top of the inner wall of the limiting groove 5 is connected to the outer tube 2. The connector and the tube can be connected by means of adhesive or other methods.

[0046] The double-layer hose can also be designed as a split structure, with the inner and outer tubes fixed by connectors. Each insulation groove formed between the inner and outer tubes is pre-filled with air to improve insulation. Furthermore, both the outer and inner tubes can be replaced at any time if damaged, making it highly practical. In addition, foaming agents are added during the production of the double-layer hose, which reduces the weight of the hose while also improving its insulation performance.

[0047] Adding a foaming agent during the production of double-layer hoses reduces the weight of the hoses while also improving their insulation properties.

[0048] Working principle: The double-layer hose is formed into a single structure through blow molding. The outer tube is spirally connected to the inner tube, and several independent insulation grooves are formed between the outer and inner tubes. During the blow molding process, air is retained in the insulation grooves, making the air in the insulation groove space relatively stable and non-flowing, thus achieving the insulation effect. At the same time, this structure ensures that damage to one part of the outer wall of the double-layer hose will not affect the use of other parts of the hose. The undamaged double-layer hose can also be recycled and reused, saving resources and costs. In addition, a foaming agent can be added to the material during the blow molding process, which reduces the weight of the hose and also improves the insulation effect of the hose itself.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-layered flexible hose with heat insulation function, characterized in that, The utility model provides a heat preservation pipe, which comprises an inner layer pipe and an outer layer pipe, a plurality of heat preservation grooves are formed between the outer layer pipe and the inner layer pipe, and the heat preservation grooves contain a gas with low thermal conductivity.

2. The double-layer hose having a heat retaining function according to claim 1, wherein The gas is air.

3. The double-layer hose having a heat retaining function according to claim 1, wherein The plurality of heat preservation grooves are independent of each other.

4. The double-layer hose having a heat retaining function according to claim 3, wherein The inner layer pipe and the outer layer pipe are a double-layer blow molding integrated structure.

5. The double-layer hose having a heat retaining function according to claim 3, wherein The inner layer pipe and the outer layer pipe are a split structure, the inner layer pipe is a straight extrusion pipe, the outer layer pipe is a spiral blow molding pipe, and the inner layer pipe and the outer layer pipe are connected through a connecting head.

6. The double-layer hose having a heat retaining function according to claim 5, wherein A limiting groove is arranged on the connecting head, the bottom of the inner wall of the limiting groove abuts on the inner wall of the inner layer pipe, and the top of the inner wall of the limiting groove is connected to the outer layer pipe.

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