Composite hose

Abstract

The utility model discloses a composite hose which comprises a framework structure and a hose body, the framework structure comprises a first framework and a second framework, a first thread groove which is spirally arranged around the axis of the hose body is formed in the inner wall of the hose body, a second thread groove which is spirally arranged around the axis of the hose body is formed in the outer wall of the hose body, and the first thread groove and the second thread groove are in threaded connection. The first thread grooves and the second thread grooves are formed in a staggered mode, the first framework is erected on the inner wall of the pipe body along the first thread grooves, and the second framework is erected on the outer wall of the pipe body along the second thread grooves. The first framework comprises a first supporting layer and a first anti-corrosion layer wrapping the outer side of the first supporting layer, and the second framework comprises a second supporting layer and a second anti-corrosion layer wrapping the outer side of the second supporting layer. According to the embodiment, the contradiction between strength and corrosion resistance of a traditional single material is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoses, in particular to a composite hose. Background Art

[0002] Currently, most composite hoses on the market are made of a single metal skeleton. While this design simplifies the production process, it is difficult to achieve a balance between corrosion resistance and mechanical strength in actual applications. On the one hand, although high-strength steel can provide sufficient support to ensure the stable operation of the hose in a high-pressure environment, its corrosion resistance is poor. Especially in environments containing corrosive media such as acids and alkalis, it is prone to rust, which affects the service life of the hose. On the other hand, some materials with excellent corrosion resistance, such as stainless steel or certain alloys, can effectively resist erosion from the external environment, but their mechanical strength often cannot meet the requirements of high-intensity operations. In addition, these materials are expensive and difficult to process, resulting in increased production costs and unfavorable for large-scale production and application. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the skeleton of the existing composite hose is made of a single metal material, which makes it difficult to ensure both its corrosion resistance and mechanical strength, and is also difficult to process, resulting in an increase in production costs.

[0004] In order to solve the above technical problems, the utility model provides a composite hose, including a skeleton structure and a tube body, the skeleton structure including a first skeleton and a second skeleton, the inner wall of the tube body is formed with a first thread groove spirally arranged around the axis of the tube body, and the outer wall of the tube body is formed with a second thread groove spirally arranged around the axis of the tube body, the first thread groove and the second thread groove are staggered, the first skeleton is mounted on the inner wall of the tube body along the first thread groove, and the second skeleton is mounted on the outer wall of the tube body along the second thread groove, the first skeleton includes a first support layer and a first anti-corrosion layer wrapped around the outside of the first support layer, and the second skeleton includes a second support layer and a second anti-corrosion layer wrapped around the outside of the second support layer.

[0005] Furthermore, the strength of the first supporting layer is greater than the strength of the first anti-corrosion layer; the strength of the second supporting layer is greater than the strength of the second anti-corrosion layer.

[0006] Furthermore, the first supporting layer is made of steel, and the second supporting layer is made of steel.

[0007] Furthermore, the first anti-corrosion layer is made of aluminum, copper or nickel, and the second anti-corrosion layer is made of aluminum, copper or nickel.

[0008] Furthermore, the ratio of the thickness of the first anti-corrosion layer to the thickness of the first support layer is in the range of 0.09-0.15, and the ratio of the thickness of the second anti-corrosion layer to the thickness of the second support layer is in the range of 0.09-0.15.

[0009] Furthermore, the pitch of the first skeleton is 19-21 mm, and the pitch of the second skeleton is 19-21 mm.

[0010] Furthermore, the pitch of the first skeleton is the same as the pitch of the second skeleton.

[0011] Furthermore, the first skeleton includes a plurality of first spiral portions formed in a spiral along the axial direction of the tube body, and the second skeleton includes a plurality of second spiral portions formed in a spiral along the axial direction of the tube body. There is a gap between the first spiral portion and the adjacent second spiral portion, and the ratio of the gap to the pitch of the first skeleton is in the range of 0.4-0.6.

[0012] Furthermore, the tube body includes a barrier inner layer, a reinforcement layer and an anti-aging outer layer that are laid and compounded in sequence, one of the skeletons is erected along the first thread groove on the side of the barrier inner layer away from the reinforcement layer, and the other skeleton is erected along the second thread groove on the side of the anti-aging outer layer away from the reinforcement layer.

[0013] Furthermore, the reinforcement layer is made of synthetic fiber fabric.

[0014] Compared with the prior art, the composite hose of the present invention has the following advantages:

[0015] The embodiment of the utility model combines the support layer with the anti-corrosion layer, which can significantly improve the corrosion resistance of the hose while maintaining a high mechanical strength, solving the contradiction between strength and corrosion resistance of traditional single materials. The double-layer skeleton design enables both the inner and outer sides to be effectively supported and protected, further enhancing the overall stability of the hose. In addition, the spirally staggered thread grooves not only help to improve the flexibility of the hose, but also make it easier to bend and less likely to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a partial cross-sectional view of a composite hose provided by an embodiment of the present utility model;

[0017] Figure 2 is a cross-sectional view of a first skeleton provided by an embodiment of the present utility model;

[0018] Figure 3 The embodiment of the present utility model provides Figure 1 A partial enlarged view of the circled portion A;

[0019] In the figure, 1. skeleton structure; 11. first skeleton; 111. first supporting layer; 112. first anti-corrosion layer; 113. first spiral part; 12. second skeleton; 121. second spiral part; 2. tube body; 21. first thread groove; 22. second thread groove; 23. barrier inner layer; 24. reinforcement layer; 25. anti-aging outer layer. DETAILED DESCRIPTION

[0020] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1 and Figure 2 As shown, the utility model provides a composite hose, including a skeleton structure 1 and a tube body 2, the skeleton structure 1 includes a first skeleton 11 and a second skeleton 12, the inner wall of the tube body 2 is formed with a first thread groove 21 spirally arranged around the axis of the tube body 2, and the outer wall of the tube body 2 is formed with a second thread groove 22 spirally arranged around the axis of the tube body 2, the first thread groove 21 and the second thread groove 22 are staggered, the first skeleton 11 is mounted on the inner wall of the tube body 2 along the first thread groove 21, and the second skeleton 12 is mounted on the outer wall of the tube body 2 along the second thread groove 22, the first skeleton 11 includes a first supporting layer 111 and a first anti-corrosion layer 112 wrapped around the outside of the first supporting layer 111, and the second skeleton 12 includes a second supporting layer and a second anti-corrosion layer wrapped around the outside of the second supporting layer.

[0022] This embodiment combines the support layer with the anti-corrosion layer to significantly improve the corrosion resistance of the hose while maintaining high mechanical strength, resolving the contradiction between strength and corrosion resistance of traditional single materials. The double-layer skeleton design enables both the inner and outer sides to be effectively supported and protected, further enhancing the overall stability of the hose. In addition, the spirally staggered thread grooves not only help to improve the flexibility of the hose, but also make it easier to bend and less likely to break.

[0023] Furthermore, the strength of the first supporting layer 111 is greater than the strength of the first anti-corrosion layer 112 ; the strength of the second supporting layer is greater than the strength of the second anti-corrosion layer.

[0024] The first support layer 111 of this embodiment has high mechanical strength, and the first anti-corrosion layer 112 is wrapped around the outside of the first support layer 111 to provide corrosion protection. Similarly, the second support layer has high mechanical strength, and the second anti-corrosion layer is wrapped around the outside of the second support layer to provide corrosion protection. In addition, the first support layer 111 serves as the main load-bearing and supporting structure of the first skeleton 11, and the first anti-corrosion layer 112 is mainly responsible for protecting the first support layer 111 from corrosion in the external environment. Similarly, the second support layer serves as the main load-bearing and supporting structure of the second skeleton 12, and the second anti-corrosion layer mainly plays a protective role, ensuring that the outer wall of the hose can still maintain good structural integrity and mechanical properties when facing external physical impact or chemical corrosion.

[0025] Furthermore, the first support layer 111 is made of steel, and the second support layer is made of steel. In this embodiment, steel is used for the first support layer 111 and the second support layer. The first frame 11 and the second frame 12 can effectively support the inner and outer walls of the hose, preventing deformation or rupture of the hose due to internal fluid pressure or external physical impact. This ensures that the hose maintains a stable structure and shape under high-pressure and high-load working environments without deformation or damage.

[0026] Furthermore, the first anti-corrosion layer 112 is made of aluminum, copper or nickel, and the second anti-corrosion layer is made of aluminum, copper or nickel.

[0027] This embodiment uses aluminum, copper or nickel as the anti-corrosion layer, which can significantly improve the durability of the composite hose, so that the first anti-corrosion layer 112 and the second anti-corrosion layer can maintain their protective performance for a long time, preventing the internal steel material from being damaged by corrosion, thereby extending the service life of the hose. Different corrosion environments have different requirements for materials. For example, the use of bimetallic composite technology skeletons such as steel / aluminum, steel / copper, and steel / nickel, in addition to ensuring that the strength meets the requirements, solves the problems of corrosion resistance, anti-static, explosion-proof and other functions, realizes multiple protections, and reduces the use of expensive materials, effectively improving product competitiveness.

[0028] It should be noted that in flammable and explosive areas, soft metals such as steel / aluminum composite metal skeletons can be used to ensure strength while effectively reducing safety hazards caused by friction, collision and sparks.

[0029] Furthermore, the ratio of the thickness D1 of the first anti-corrosion layer 112 to the thickness D2 of the first support layer 111 is in the range of 0.09-0.15, and the ratio of the thickness of the second anti-corrosion layer to the thickness of the second support layer is in the range of 0.09-0.15.

[0030] The thickness ratio of this embodiment can ensure that the anti-corrosion layer is thick enough to provide long-term protection, while not being too thick to avoid adding unnecessary weight and cost. It can also prevent the anti-corrosion layer from being too thin, causing it to fail due to wear or corrosion during use, resulting in the support layer being exposed to a corrosive environment.

[0031] Furthermore, the pitch P1 of the first skeleton 11 is 19-21 mm, and the pitch P2 of the second skeleton 12 is 19-21 mm. This pitch arrangement of this embodiment allows the hose to bend more flexibly, reducing the bending radius and improving its flexibility. It also ensures that the first and second skeletons 11, 12 are more densely distributed on the tube body 2, thereby providing better support. This helps to improve the mechanical strength of the composite hose under high pressure and high load conditions, preventing the tube body 2 from deforming or rupturing under the influence of internal fluid pressure. Furthermore, this pitch can reduce inner wall irregularities, allowing the fluid to flow more smoothly within the tube body 2, reducing resistance and improving fluid transmission efficiency.

[0032] Furthermore, the pitch P1 of the first skeleton 11 is the same as the pitch P2 of the second skeleton 12, so that the first skeleton 11 and the second skeleton 12 are evenly distributed on the inner and outer walls of the tube body 2, ensuring that the hose is uniformly supported in all directions, thereby improving the overall structural stability.

[0033] Furthermore, the first skeleton 11 includes a plurality of first spiral portions 113 spirally formed along the axial direction of the tube body 2, and the second skeleton 12 includes a plurality of second spiral portions 121 spirally formed along the axial direction of the tube body 2. There is a gap L1 between the first spiral portion 113 and the adjacent second spiral portion 121, so that when the hose is bent, the deformation of the inner and outer walls is more uniform, reducing local stress concentration and further improving flexibility. The ratio of the gap L1 to the pitch P1 of the first skeleton 11 is in the range of 0.4-0.6, which can make the distribution of the first skeleton 11 and the second skeleton 12 on the tube body 2 more uniform, provide a consistent support effect, and help to improve the mechanical strength of the hose under high pressure and high load conditions, and prevent the tube body 2 from deformation or rupture under the action of internal fluid pressure.

[0034] It should be noted that the ratio range of this embodiment ensures that the spacing is neither too large nor too small. Excessively large spacing may lead to insufficient support and affect mechanical strength, while excessively small spacing may limit flexibility and increase local stress concentration. This ratio range achieves a good balance between flexibility and mechanical strength for the hose, ensuring both sufficient flexibility and the necessary mechanical strength and support.

[0035] like Figure 3As shown, the tube body 2 comprises a barrier inner layer 23, a reinforcement layer 24, and an anti-aging outer layer 25, which are laid and laminated together in sequence. A framework is mounted along the first thread groove 21 on the side of the barrier inner layer 23 facing away from the reinforcement layer 24 to provide support and protection on the inside, preventing the inner layer from deforming or rupturing under high pressure. Another framework is mounted along the second thread groove 22 on the side of the anti-aging outer layer 25 facing away from the reinforcement layer 24 to provide support and protection on the outside, preventing damage to the tube body 2 from the external environment. Based on the above structure, the barrier inner layer 23 of this embodiment is located innermost, directly contacting the fluid and acting as a barrier to fluid penetration. The reinforcement layer 24 is located in the middle, providing mechanical strength and support. The anti-aging outer layer 25 is located outermost, protecting the tube body 2 from the external environment and extending its service life.

[0036] Furthermore, the reinforcement layer 24 is made of synthetic fiber fabric. This embodiment utilizes the high tensile strength of synthetic fiber fabric, which can withstand significant tension and pressure, ensuring that the hose does not deform or rupture under high pressure and high load conditions. Furthermore, the synthetic fiber fabric exhibits excellent flexibility, maintaining structural integrity when bent, making the hose more flexible and adaptable to complex installation environments. Furthermore, the barrier inner layer 23 and the anti-aging outer layer 25 of this embodiment are made of a multi-layer functional polymer film.

[0037] In summary, the embodiment of the utility model provides a composite hose, which combines a support layer with an anti-corrosion layer, and can significantly improve the corrosion resistance of the hose while maintaining high mechanical strength, thereby solving the contradiction between strength and corrosion resistance of traditional single materials without changing the original performance of the product. At the same time, in areas such as those requiring special materials for corrosion resistance, costs can be effectively reduced without reducing corrosion resistance.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A composite hose, characterized in that: It includes a skeleton structure and a tube body, the skeleton structure includes a first skeleton and a second skeleton, the inner wall of the tube body is formed with a first thread groove spirally arranged around the axis of the tube body, the outer wall of the tube body is formed with a second thread groove spirally arranged around the axis of the tube body, the first thread groove and the second thread groove are staggered, the first skeleton is mounted on the inner wall of the tube body along the first thread groove, the second skeleton is mounted on the outer wall of the tube body along the second thread groove, the first skeleton includes a first support layer and a first anti-corrosion layer wrapped around the outside of the first support layer, the second skeleton includes a second support layer and a second anti-corrosion layer wrapped around the outside of the second support layer.

2. The composite hose according to claim 1, characterized in that The strength of the first supporting layer is greater than that of the first anti-corrosion layer; the strength of the second supporting layer is greater than that of the second anti-corrosion layer.

3. The composite hose according to claim 1, characterized in that The first supporting layer is made of steel, and the second supporting layer is made of steel.

4. The composite hose according to claim 1, characterized in that The first anti-corrosion layer is made of aluminum, copper or nickel, and the second anti-corrosion layer is made of aluminum, copper or nickel.

5. The composite hose according to claim 1, characterized in that The ratio of the thickness of the first anti-corrosion layer to the thickness of the first support layer is in the range of 0.09-0.15, and the ratio of the thickness of the second anti-corrosion layer to the thickness of the second support layer is in the range of 0.09-0.

15.

6. The composite hose according to claim 1, characterized in that The pitch of the first skeleton is 19-21 mm, and the pitch of the second skeleton is 19-21 mm.

7. The composite hose according to claim 1 or 6, characterized in that: The pitch of the first skeleton is the same as the pitch of the second skeleton.

8. The composite hose according to claim 7, characterized in that The first skeleton includes a plurality of first spiral parts spirally formed along the axial direction of the tube body, and the second skeleton includes a plurality of second spiral parts spirally formed along the axial direction of the tube body. There is a gap between the first spiral part and the adjacent second spiral part, and the ratio of the gap to the pitch of the first skeleton is in the range of 0.4-0.

6.

9. The composite hose according to claim 1, characterized in that The tube body includes a barrier inner layer, a reinforcement layer and an anti-aging outer layer which are laid and compounded in sequence. One skeleton is erected along the first thread groove on the side of the barrier inner layer away from the reinforcement layer, and the other skeleton is erected along the second thread groove on the side of the anti-aging outer layer away from the reinforcement layer.

10. The composite hose according to claim 9, characterized in that The reinforcement layer is made of synthetic fiber fabric.

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