Silicone tube with high pressure resistance

Abstract

The utility model belongs to the technical field of silicone tubes, and particularly relates to a silicone tube with high pressure resistance, which comprises a silicone tube layer, a snakelike spiral spring is arranged in the silicone tube layer, and the snakelike spiral spring is composed of a plurality of straight line sections and bent parts connected with the straight line sections. The whole S-shaped spiral spring is bent into a spiral shape around the axis of the silicone tube layer, the bent part of the S-shaped spiral spring is arranged in the radial direction of the silicone tube layer, and the outer side of the silicone tube layer is wound and wrapped with an outer wear-resistant layer. Due to the fact that the snake-shaped spiral spring is composed of the multiple continuous bent sections, and each bent section is arranged in the radial direction of the silicone tube layer, the snake-shaped spiral spring can naturally deform in the radial direction along with the increase of the internal pressure of the silicone tube when the diameter of the pipeline is increased, and therefore the snake-shaped spiral spring can better adapt to the radial change of the pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of silicone tube technology, specifically relating to a silicone tube with strong pressure resistance. Background Technology

[0002] Silicone tubing, as an important flexible material, is widely used in various fields such as medical, food, chemical, and machinery due to its excellent flexibility, chemical resistance, biocompatibility, and high-temperature resistance. However, when subjected to high internal pressure, the structural stability and pressure resistance of silicone tubing become key factors limiting its application range. To improve the pressure resistance of silicone tubing, traditional technologies typically employ methods such as increasing the wall thickness, incorporating internal spiral steel rings, and using composite materials.

[0003] The use of a spiral steel ring inside the silicone tube significantly improves its pressure resistance. The spiral steel ring restricts the radial expansion of the silicone tube, thus maintaining the stability of the pipe structure. However, the spiral steel ring has high rigidity, which makes it difficult for the helical spring to adapt to the deformation requirements of the silicone tube under different pressures. When the internal pressure of the silicone tube changes, the helical spring may not deform synchronously with the silicone tube, leading to gaps or stress concentration at the interface between them, thus affecting the long-term stability and service life of the silicone tube. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a silicone tube with strong pressure resistance, thereby solving the problem that when existing silicone tubes increase pressure resistance through spiral steel rings, the excessive rigidity makes it difficult for the spiral spring to adapt to the deformation requirements of the silicone tube under different pressures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a silicone tube with high pressure resistance, comprising a silicone tube layer, wherein a serpentine helical spring is provided inside the silicone tube layer, the serpentine helical spring is composed of multiple straight segments and bent portions connecting the straight segments, and the serpentine helical spring is bent into a spiral shape around the axis of the silicone tube layer as a whole, and the bent portions of the serpentine helical spring are arranged in the radial direction of the silicone tube layer, and an outer wear-resistant layer is wrapped around the outside of the silicone tube layer.

[0006] The beneficial effects of this utility model are as follows: Since the serpentine helical spring is composed of multiple continuous bending segments, and each bending segment is arranged radially along the silicone tube layer, this design allows the serpentine spring to undergo natural radial deformation as the internal pressure of the silicone tube increases and the pipe diameter increases, thereby better adapting to the radial changes of the pipe.

[0007] To effectively prevent external liquids from entering the gap between the serpentine helical spring and the silicone tube layer;

[0008] As a further improvement to the above technical solution: the lower limit of the distance between the serpentine helical spring and the outer side of the silicone tube layer is not less than the distance between the serpentine helical spring and the inner side of the silicone tube layer is not less than the distance between the serpentine helical spring and the inner side of the silicone tube layer.

[0009] The beneficial effects of this improvement are: a certain distance is maintained between the serpentine helical spring and the inner and outer walls of the silicone tube layer, thereby preventing the serpentine helical spring from being exposed on the outside of the silicone tube layer, which would cause external liquid to enter the gap between the serpentine helical spring and the silicone tube layer and corrode the serpentine helical spring.

[0010] To further improve the pressure resistance of the silicone tube layer;

[0011] As a further improvement to the above technical solution: a braided mesh layer is installed in the silicone tube layer inside the serpentine helical spring, the axis of the braided mesh layer is collinear with the axis of the silicone tube layer, and the braided mesh layer is a nylon fiber mesh.

[0012] The beneficial effects of this improvement are: the braided mesh layer can effectively enhance the structural strength and wear resistance of the silicone tube layer, while preventing the silicone tube layer from being scratched or punctured during use.

[0013] To effectively ensure the pressure resistance of the silicone tube layer;

[0014] As a further improvement to the above technical solution: the outer wear-resistant layer includes a tensile substrate, a wear-resistant surface layer and an adhesive layer. The tensile substrate is a polyester fiber mesh, and the wear-resistant surface layer is an epoxy resin coating with added silicon carbide particles. The wear-resistant surface layer is sprayed onto the surface of the tensile substrate.

[0015] The beneficial effects of this improvement are: the wear-resistant surface layer attached to the tensile substrate can effectively improve the wear resistance of the silicone tube layer and reduce the risk of the silicone tube layer being scratched or punctured.

[0016] To ensure the stability of the connection between the outer wear-resistant layer and the silicone tube layer;

[0017] As a further improvement to the above technical solution: the adhesive layer is coated on the side of the tensile substrate facing away from the wear-resistant surface layer, and the adhesive layer is a polyurethane adhesive structure.

[0018] The beneficial effect of this improvement is that the outer wear-resistant layer can be stably connected to the silicone tube layer under the adhesion of the adhesive layer.

[0019] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a top perspective view of the present invention;

[0022] Figure 3 This is a schematic diagram of the serpentine helical spring in this utility model;

[0023] Figure 4 This is a cross-sectional view of the outer and inner wear-resistant layers of this utility model;

[0024] In the diagram: 1. Silicone tube layer; 2. Snake-shaped helical spring; 3. Braided mesh layer; 4. Outer wear-resistant layer; 41. Tensile substrate; 42. Wear-resistant surface layer; 43. Adhesive layer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0026] Example 1:

[0027] like Figure 1As shown in Figure 4: A high-pressure-resistant silicone tube includes a silicone tube layer 1. A serpentine helical spring 2 is disposed inside the silicone tube layer 1. The serpentine helical spring 2 is composed of multiple straight segments and bent portions connecting the straight segments. The serpentine helical spring 2 is bent into a spiral shape around the axis of the silicone tube layer 1, and the bent portions of the serpentine helical spring 2 are arranged in the radial direction of the silicone tube layer 1. An outer wear-resistant layer 4 is wrapped around the outside of the silicone tube layer 1. Because the serpentine helical spring 2 is composed of multiple continuous bent segments, and each bent segment is arranged radially along the silicone tube layer 1, this design allows the serpentine spring to undergo natural radial deformation as the internal pressure of the silicone tube increases and the pipe diameter increases, thus better adapting to the radial changes of the pipe. The lower limit of the distance between the serpentine helical spring 2 and the outer surface of the silicone tube layer 1 is not less than 2 mm, and the lower limit of the distance between the serpentine helical spring 2 and the inner surface of the silicone tube layer 1 is not less than 2 mm. A certain distance is maintained between the inner and outer walls of the serpentine helical spring 2 and the silicone tube layer 1, thereby preventing the serpentine helical spring 2 from being exposed on the outside of the silicone tube layer 1, which would allow external liquid to enter the gap between the serpentine helical spring 2 and the silicone tube layer 1 and corrode the serpentine helical spring 2. A braided mesh layer 3 is installed in the silicone tube layer 1 inside the serpentine helical spring 2. The axis of the braided mesh layer 3 is collinear with the axis of the silicone tube layer 1. The braided mesh layer 3 is a nylon fiber mesh. The braided mesh layer 3 can effectively enhance the structural strength and wear resistance of the silicone tube layer 1, while preventing the silicone tube layer 1 from being scratched or punctured during use. The outer wear-resistant layer 4 includes a tensile substrate 41, a wear-resistant surface layer 42, and an adhesive layer 43. The tensile substrate 41 is a polyester fiber mesh, and the wear-resistant surface layer 42 is a nylon fiber mesh. 2 is an epoxy resin coating with added silicon carbide particles. The wear-resistant surface layer 42 is sprayed on the surface of the tensile substrate 41. The wear-resistant surface layer 42 attached to the tensile substrate 41 can effectively improve the wear resistance of the silicone tube layer 1 and reduce the risk of the silicone tube layer 1 being scratched or punctured. The adhesive layer 43 is coated on the side of the tensile substrate 41 facing away from the wear-resistant surface layer 42, and the adhesive layer 43 is a polyurethane adhesive structure. The outer wear-resistant layer 4 can be stably connected to the silicone tube layer 1 under the adhesion of the adhesive layer 43.

[0028] The working principle of this technical solution is as follows: Since the bent part of the serpentine helical spring 2 is located radially on the silicone tube layer 1, when the silicone tube layer 1 is subjected to internal pressure, each bent segment of the serpentine helical spring 2 can evenly distribute the pressure, avoiding the problem of local stress concentration. At the same time, the helical structure of the serpentine helical spring 2 allows it to maintain effective support for the silicone tube while also stretching appropriately with the deformation of the silicone tube layer 1, thereby improving the overall pressure resistance and elastic recovery ability of the silicone tube. Since the serpentine helical spring 2 is composed of multiple continuous bent segments, and each bent segment is arranged radially along the silicone tube layer 1, this design allows the serpentine helical spring 2 to undergo natural radial deformation as the internal pressure of the silicone tube increases and the pipe diameter increases, thereby better adapting to the radial changes of the pipe.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the invention; these examples are merely for the purpose of helping to understand the method and core ideas of the invention. The above descriptions are only preferred embodiments of the invention. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of the invention, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this invention.

Claims

1. A silicone tube with high pressure resistance, characterized in that: The device includes a silicone tube layer (1), inside which a serpentine helical spring (2) is provided. The serpentine helical spring (2) is composed of multiple straight segments and a bent portion connecting the straight segments. The serpentine helical spring (2) is bent into a spiral shape around the axis of the silicone tube layer (1). The bent portion of the serpentine helical spring (2) is arranged in the radial direction of the silicone tube layer (1). An outer wear-resistant layer (4) is wrapped around the outside of the silicone tube layer (1).

2. The silicone tube with high pressure resistance according to claim 1, characterized in that: The lower limit of the distance between the serpentine helical spring (2) and the outer side of the silicone tube layer (1) is not less than the serpentine helical spring (2) mm, and the lower limit of the distance between the serpentine helical spring (2) and the inner side of the silicone tube layer (1) is not less than the serpentine helical spring (2) mm.

3. The silicone tube with high pressure resistance according to claim 1, characterized in that: A braided mesh layer (3) is installed in the silicone tube layer (1) inside the serpentine helical spring (2). The axis of the braided mesh layer (3) is collinear with the axis of the silicone tube layer (1). The braided mesh layer (3) is a nylon fiber mesh.

4. The silicone tube with high compressive strength according to claim 1, characterized in that: The outer wear-resistant layer (4) includes a tensile substrate (41), a wear-resistant surface layer (42) and an adhesive layer (43). The tensile substrate (41) is a polyester fiber mesh, and the wear-resistant surface layer (42) is an epoxy resin coating with added silicon carbide particles. The wear-resistant surface layer (42) is sprayed on the surface of the tensile substrate (41).

5. A silicone tube with high compressive strength according to claim 4, characterized in that: The adhesive layer (43) is coated on the side of the tensile substrate (41) facing away from the wear-resistant surface layer (42), and the adhesive layer (43) is a polyurethane adhesive structure.

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