A high-elasticity, wear-resistant inner silicone outer braided tube

Abstract

This utility model relates to a highly elastic wear-resistant braided tube with an inner silicone layer and an outer braided tube. The tube body comprises an outer braided wear-resistant layer, a transition layer, an inner silicone layer, and an elastic support. The inner wall of the outer braided wear-resistant layer is connected to the transition layer, and the two are bonded together by a hot melt adhesive dot matrix design with an alternating distribution along the tube body axis. The outer braided wear-resistant layer is formed by obliquely interwoven warp and weft fibers, with wavy wear-resistant protrusions spaced apart on the surface of the weft fibers. A flow guide groove is formed on the outer surface of the outer braided wear-resistant layer, the depth of which is less than the height of the wavy wear-resistant protrusions. An inner silicone layer is added to the inner cavity of the transition layer, and an elastic support is added to the outer surface of the inner silicone layer. The elastic support is formed by interwoven elastic fiber bundles to create a mesh structure, and the entire structure is spirally wound around the outer surface of the inner silicone layer. The transition layer engages with the elastic support through an inner spiral groove formed on its inner wall.

Description

Technical Field

[0001] This utility model relates to the field of braided tubing, specifically to a highly elastic and wear-resistant inner silicone outer braided tubing. Background Technology

[0002] Pipes are commonly used in fluid transportation and other applications. They need to have good elasticity, anti-delamination and wear resistance to ensure long-term stable use. They are an important research object in the current pipe industry for structural improvement and performance optimization to meet transportation needs.

[0003] Existing silicone-coated braided tubing suffers from significant structural design deficiencies. It lacks a robust elastic support structure formed by interwoven elastic fiber bundles creating a mesh-like, spirally wound network. Support is provided solely by the simple interlocking of the inner silicone layer and the outer braided layer, resulting in weak radial support and difficulty in rapid recovery under pressure. Its elasticity and deformation resistance fail to meet practical application requirements. Furthermore, the interlayer connections in existing tubing are simplistic. There is no interlocking structure between the transition layer and the elastic support, and the outer braided layer and transition layer are not bonded using a staggered hot melt adhesive matrix distributed along the tubing's axial direction. These methods are often simple... Single bonding or adhesive bonding not only results in high interlayer shear stress between the outer braided layer, transition layer, inner silicone layer, and elastic support, but also makes it prone to delamination and leakage under high pressure or temperature difference environments due to stress concentration at the interlayer interface. Furthermore, the outer braided layer does not use a weaving method with oblique cross-weft fibers, and lacks wavy wear-resistant protrusions and drainage grooves on the surface, resulting in poor structural stability of the outer braided layer itself. When in contact with the outside world, the friction contact surface is concentrated, the friction damage per unit area is large, and the debris generated by friction cannot be effectively discharged, further aggravating the wear of the outer braided layer and resulting in weak wear resistance. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned deficiencies and provide a highly elastic and wear-resistant inner silicone outer braided tube. This tube is an elastic support body formed by interlaced elastic fiber bundles woven into a mesh structure and spirally wound around the outer surface of the inner silicone layer. This effectively improves the elasticity and deformation resistance of the tube body and solves the technical problems of existing technologies, such as weak radial support capacity of the tube body, difficulty in rapid recovery after being subjected to pressure, and insufficient elasticity and deformation resistance to meet the actual use requirements.

[0005] The objective of this utility model is achieved through the following means:

[0006] A highly elastic and wear-resistant inner silicone braided tube includes an outer braided wear-resistant layer. A transition layer is connected to the inner wall of the outer braided wear-resistant layer. The outer braided wear-resistant layer and the transition layer are bonded together by a hot melt adhesive matrix. The outer braided wear-resistant layer is formed by obliquely interwoven warp and weft fibers. Wavy wear-resistant protrusions are spaced apart on the surface of the weft fibers. An inner silicone layer is added to the inner cavity of the transition layer. An elastic support is added to the outer surface of the inner silicone layer. The elastic support is formed by interwoven elastic fiber bundles to create a mesh structure. The elastic support is spirally wound around the outer surface of the inner silicone layer. The outer braided wear-resistant layer, transition layer, inner silicone layer, and elastic support constitute the tube body. The hot melt adhesive matrix is ​​staggered along the axial direction of the tube body. An inner spiral groove is formed on the inner wall of the transition layer, allowing the transition layer to engage with the elastic support through the inner spiral groove. A flow guide groove is formed on the outer surface of the outer braided wear-resistant layer, the depth of which is less than the height of the wavy wear-resistant protrusions.

[0007] According to the preset inner diameter specifications of the tube, an inner silicone layer with basic flexibility is prepared as the inner basic structure of the tube to ensure the basic sealing and conveying performance of the tube.

[0008] Multiple elastic fiber bundles are selected and interwoven to form a mesh structure to obtain an elastic support. Then, the mesh-like elastic support is spirally wound around the outer surface of the inner silicone layer to ensure that the elastic support is tightly attached to the outer surface of the inner silicone layer, providing a radial support foundation for the tube.

[0009] A transition layer is prepared, and an inner spiral groove is opened on the inner wall of the transition layer so that the specifications of the inner spiral groove match the spiral grid structure of the elastic support. The transition layer is sleeved on the outside of the elastic support. Through the interlocking between the inner spiral groove of the transition layer and the elastic support, the transition layer and the elastic support are precisely positioned and initially fixed, forming the inner layer combination structure of the tube.

[0010] Warp and weft fibers are selected and woven together using a diagonal cross-weaving process to form an outer woven abrasion-resistant layer. During the weaving process, wavy abrasion-resistant protrusions are set at intervals on the surface of the weft fibers. After the outer woven abrasion-resistant layer is woven, a guide groove is opened on its outer surface to ensure that the depth of the guide groove is less than the height of the wavy abrasion-resistant protrusions, so as to avoid the guide groove affecting the abrasion resistance.

[0011] Hot melt adhesive is applied to the outer wall of the transition layer to form a hot melt adhesive dot matrix that is staggered along the tube axis. The prepared outer braided wear-resistant layer is then fitted onto the outside of the transition layer, so that the inner wall of the outer braided wear-resistant layer is bonded and fixed to the outer wall of the transition layer through the hot melt adhesive dot matrix. Finally, the outer braided wear-resistant layer, the transition layer, the inner silicone layer, and the elastic support together form a complete tube.

[0012] Furthermore, an outer spiral groove is formed on the outer surface of the inner silicone layer, and the elastic support is connected to the inner silicone layer through the outer spiral groove.

[0013] The outer spiral groove provides a precise positioning trajectory for the elastic support, preventing axial or circumferential displacement of the elastic support on the outer surface of the inner silicone layer and ensuring the fixed position of the support structure. The tight fit between the elastic support and the outer spiral groove can evenly transfer external forces to the inner silicone layer, avoiding localized force concentration that could lead to deformation of the inner silicone layer. This connection method does not damage the sealing performance of the inner silicone layer and provides a stable base for the subsequent addition of other auxiliary structures to the elastic support.

[0014] Furthermore, elastic fiber balls are added at the grid intersection nodes of the elastic support, and the elastic fiber balls are evenly distributed along the spiral direction of the elastic support.

[0015] The grid intersections are the stress concentration areas of the elastic support. The addition of elastic fiber balls can specifically enhance the buffering capacity of this area, absorbing the stress generated by external impacts or internal media fluctuations on the pipe. The elastic fiber balls are evenly distributed along the spiral direction of the elastic support, ensuring consistent buffering performance around the pipe's circumference and axis, and avoiding structural damage caused by insufficient local buffering. The elastic properties of the elastic fiber balls match those of the elastic support, so that while playing a buffering role, they do not affect the overall support and rebound function of the elastic support.

[0016] Furthermore, the outer surface of the elastic fiber ball is coated with silicone, and the inner layer of the elastic fiber ball is reinforced with polyester fiber bundles.

[0017] The inner polyester fiber bundles are highly elastic, allowing the elastic fiber balls to quickly return to their original shape after being compressed, thus extending the service life of the cushioning structure. The outer high-temperature resistant silicone coating is made of the same material as the inner silicone layer, which can avoid corrosion and separation caused by incompatibility issues between different materials, while also improving the elastic fiber balls' resistance to media corrosion. The outer silicone layer can isolate the external media from direct contact with the inner polyester fiber bundles, preventing the polyester fiber bundles from losing performance due to media erosion, and further enhancing the stability of the elastic fiber balls.

[0018] Furthermore, the inner wall of the inner silicone layer is uniformly formed with an inner spiral groove, and the inner cavity of the inner spiral groove is provided with wear-resistant protrusions.

[0019] The spiral trajectory formed by the inner spiral groove and the wear-resistant protrusions guides the medium inside the pipe to flow in the spiral direction, reducing medium turbulence and minimizing local erosion of the inner wall by turbulence. The wear-resistant protrusions are in direct contact with the medium, preventing tiny particles in the medium from directly eroding the inner wall of the silicone layer, avoiding local wear and thinning or scratches on the inner silicone layer, and ensuring its sealing performance. The spacing of the inner spiral grooves can be adjusted according to the size of the medium particles, enhancing the adaptability of the structure to different medium transportation scenarios and improving the versatility of the pipe.

[0020] Furthermore, the cross-section of the wear-resistant protrusion is a semi-circular elongated protrusion, the wear-resistant protrusion is spirally distributed along the axial direction of the inner silicone layer, and the surface layer of the wear-resistant protrusion is coated with wear-resistant silicone.

[0021] The elongated, semi-circular cross-section design reduces the contact resistance between the medium and the wear-resistant protrusions during flow, preventing a decrease in medium transport efficiency due to the protrusion structure. The helical direction of the wear-resistant protrusions along the inner silicone layer aligns with the elastic support, preventing torsional stress generated by the bidirectional helical structure from damaging the overall pipe structure and ensuring its structural stability. The wear-resistant silicone coating on the surface significantly enhances the erosion resistance of the wear-resistant protrusions, further extending the service life of the inner silicone layer, making it suitable for long-term transport of media containing particles.

[0022] The beneficial effects of this utility model are: the elastic support body, which is formed by interlacing elastic fiber bundles to form a mesh structure and is spirally wrapped around the outer surface of the inner silicone layer, can enhance the radial support capacity of the tube body, so that the tube body can quickly recover after being subjected to pressure, and effectively improve the elasticity and deformation resistance of the tube body.

[0023] The transition layer engages with the elastic support through an inner spiral groove on the inner wall. Meanwhile, the outer braided wear-resistant layer and the transition layer are bonded together by a hot melt adhesive dot matrix with an alternating distribution along the tube axis. This dual connection method can reduce the interlayer shear stress between the outer braided wear-resistant layer, the transition layer, the inner silicone layer and the elastic support, optimize the anti-delamination performance of the tube, and prevent delamination and leakage due to stress concentration at the interlayer interface under high pressure or temperature difference.

[0024] The outer braided wear-resistant layer is made of warp and weft fibers woven diagonally. This weaving method can improve the structural stability of the outer braided wear-resistant layer itself. The wavy wear-resistant protrusions spaced on the surface of the weft fibers can disperse the friction contact surface when the outer braided wear-resistant layer comes into contact with the outside world, reducing friction damage per unit area. At the same time, the guide grooves opened on the outer surface of the outer braided wear-resistant layer can guide the debris generated by friction to be discharged, further slowing down the wear rate of the outer braided wear-resistant layer and significantly enhancing the wear resistance of the pipe body. Attached Figure Description

[0025] Figure 1This is a three-dimensional structural diagram of a high-elasticity, wear-resistant inner silicone and outer braided tube according to the present invention.

[0026] Figure 2 This is a schematic diagram of the transition layer and connection structure of a high-elasticity, wear-resistant inner silicone outer braided tube according to the present invention.

[0027] Figure 3 This is a schematic diagram of the internal structure of the transition layer of a high-elasticity, wear-resistant inner silicone outer braided tube according to this utility model.

[0028] Figure 4 This is a schematic diagram of the inner silicone layer and its connection structure of a high-elasticity wear-resistant inner silicone outer braided tube according to the present invention.

[0029] Figure 5 This is an enlarged structural diagram of the inner silicone layer of a high-elasticity, wear-resistant inner silicone outer braided tube according to this utility model.

[0030] Figure 6 This is a cross-sectional enlarged structural diagram of the inner silicone layer of a high-elasticity, wear-resistant inner silicone outer braided tube according to the present invention.

[0031] In the diagram, 1. Outer braided wear-resistant layer; 2. Transition layer; 3. Inner silicone layer; 4. Tube body; 5. Guide groove; 6. Inner spiral groove; 7. Outer spiral groove; 8. Elastic support; 9. Elastic fiber ball; 10. Inner spiral groove; 11. Wear-resistant protrusion. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The specific implementation of a high-elasticity wear-resistant inner silicone outer braided tube includes an outer braided wear-resistant layer 1, with a transition layer 2 connected to the inner wall of the outer braided wear-resistant layer 1. The outer braided wear-resistant layer 1 and the transition layer 2 are bonded together by hot melt adhesive dot matrix bonding. The outer braided wear-resistant layer 1 is formed by obliquely cross-woven warp and weft fibers, with wavy wear-resistant protrusions spaced apart on the surface of the weft fibers. An inner silicone layer 3 is added to the inner cavity of the transition layer 2, and an elastic support 8 is added to the outer surface of the inner silicone layer 3. The elastic support 8 is composed of interlaced elastic fiber bundles. The braided structure forms a mesh-like structure. The elastic support 8 is spirally wound around the outer surface of the inner silicone layer 3. The outer braided wear-resistant layer 1, the transition layer 2, the inner silicone layer 3, and the elastic support 8 form the tube body 4. The hot melt adhesive dot matrix is ​​staggered along the axial direction of the tube body 4. The inner wall of the transition layer 2 has an inner spiral groove 6. The transition layer 2 engages with the elastic support 8 through the inner spiral groove 6. The outer surface of the outer braided wear-resistant layer 1 has a guide groove 5. The depth of the guide groove 5 is less than the height of the wavy wear-resistant protrusion.

[0034] According to the preset inner diameter specification of the tube body 4, an inner silicone layer 3 with basic flexibility is prepared as the inner basic structure of the tube body 4 to ensure the basic sealing and conveying performance of the tube body 4.

[0035] Multiple elastic fiber bundles are selected and interwoven to form a mesh structure to obtain the elastic support 8; then the mesh-shaped elastic support 8 is spirally wound around the outer surface of the inner silicone layer 3 to ensure that the elastic support 8 is tightly attached to the outer surface of the inner silicone layer 3, providing a radial support foundation for the tube 4.

[0036] A transition layer 2 is prepared, and an inner spiral groove 6 is opened on the inner wall of the transition layer 2 so that the specifications of the inner spiral groove 6 match the spiral mesh structure of the elastic support 8; the transition layer 2 is sleeved on the outside of the elastic support 8, and the inner spiral groove 6 of the transition layer 2 and the elastic support 8 are engaged to achieve precise positioning and preliminary fixation of the transition layer 2 and the elastic support 8, forming the inner layer combination structure of the tube body 4.

[0037] Warp and weft fibers are selected and woven together using a diagonal cross-weaving process to form an outer woven abrasion-resistant layer 1. During the weaving process, wavy abrasion-resistant protrusions are set at intervals on the surface of the weft fibers. After the outer woven abrasion-resistant layer 1 is woven, a guide groove 5 is opened on its outer surface to ensure that the depth of the guide groove 5 is less than the height of the wavy abrasion-resistant protrusions, so as to avoid the guide groove 5 from affecting the abrasion resistance.

[0038] Hot melt adhesive is applied to the outer wall of the transition layer 2 to form a hot melt adhesive dot matrix that is staggered along the axial direction of the tube body 4; the prepared outer braided wear-resistant layer 1 is fitted onto the outside of the transition layer 2, so that the inner wall of the outer braided wear-resistant layer 1 is bonded and fixed to the outer wall of the transition layer 2 through the hot melt adhesive dot matrix; finally, the outer braided wear-resistant layer 1, the transition layer 2, the inner silicone layer 3 and the elastic support 8 together form a complete tube body 4;

[0039] The inner silicone layer 3 has an elastic support 8 spirally wound on its outer surface. The elastic fiber bundles are interwoven to form a mesh structure. The mesh structure can effectively disperse the stress of the tube 4 when it is under pressure. At the same time, the spiral distribution can enhance the radial support force of the tube 4, so that the tube 4 can quickly recover after being deformed under pressure, avoiding structural damage caused by repeated bending.

[0040] The transition layer 2 engages with the elastic support 8 through the inner spiral groove 6 on the inner wall, forming a "mechanical interlocking" structure, which can effectively reduce the relative sliding between the elastic support 8 and the transition layer 2; at the same time, the outer braided wear-resistant layer 1 and the transition layer 2 are bonded together by hot melt adhesive dots distributed in an alternating pattern along the axial direction of the tube body 4, avoiding interlayer stress concentration caused by full-surface bonding, further enhancing the interlayer bonding strength, and preventing the tube body 4 from delamination and leakage under high pressure or temperature difference conditions;

[0041] The outer braided wear-resistant layer 1 is made of warp and weft fibers woven diagonally. The diagonal cross structure can improve the overall structural strength of the outer braided wear-resistant layer 1. The wavy wear-resistant protrusions spaced on the surface of the weft fibers can increase the friction contact area, disperse friction stress, and reduce local wear of the outer braided wear-resistant layer 1. At the same time, the guide grooves 5 opened on the outer surface of the outer braided wear-resistant layer 1 can guide the debris generated by friction to be discharged in time, avoiding the accumulation of debris and aggravating wear. The depth of the guide grooves 5 is less than the height of the wavy wear-resistant protrusions, ensuring that the wear-resistant protrusions always play the core wear-resistant role.

[0042] The outer braided wear-resistant layer 1 and the transition layer 2 are bonded by hot melt adhesive dot matrix bonding instead of full surface bonding. The dot matrix bonding structure can ensure the interlayer bonding strength while reserving a certain bending deformation space for the tube body 4, so that the tube body 4 maintains good bending flexibility and meets the bending requirements in actual use.

[0043] The diagonally cross-woven outer braided wear-resistant layer 1 and the mesh-like spirally distributed elastic support 8 work together to suppress the initial expansion of transverse tears in the tube body 4, while the elastic support 8 can alleviate the transmission of tear stress to the inside of the tube body 4. Together, they reduce structural damage to the tube body 4 and significantly extend the overall service life of the tube body 4.

[0044] like Figure 4 As shown, an outer spiral groove 7 is formed on the outer surface of the inner silicone layer 3, and the elastic support 8 is connected to the inner silicone layer 3 through the outer spiral groove 7.

[0045] The elastic support 8 is fitted and assembled along the trajectory of the outer spiral groove 7. Using a suitable fixing method, such as self-adhesive bonding of silicone material or auxiliary heat fusion fixing, the elastic support 8 is completely embedded in the outer spiral groove 7, ensuring a tight and gapless connection. The outer spiral groove 7 provides a precise positioning trajectory for the elastic support 8, preventing axial or circumferential displacement of the elastic support 8 on the outer surface of the inner silicone layer 3, ensuring the fixed position of the support structure. The tight fit between the elastic support 8 and the outer spiral groove 7 evenly transmits external forces to the inner silicone layer 3, preventing localized stress concentration that could lead to deformation of the inner silicone layer 3. This connection method does not compromise the sealing performance of the inner silicone layer 3 and provides a stable base for the subsequent addition of other auxiliary structures to the elastic support 8.

[0046] like Figure 5 As shown, elastic fiber balls 9 are added at the grid intersection nodes of the elastic support body 8, and the elastic fiber balls 9 are evenly distributed along the spiral direction of the elastic support body 8.

[0047] An elastic support body 8 with a grid structure is fabricated, clearly defining the position and spacing of the grid intersections to ensure that the elastic performance of the grid structure meets design requirements. Markings are made at each grid intersection according to the spiral direction of the elastic support body 8, ensuring that the markings are evenly distributed along the spiral trajectory without omissions or offsets. A hot-melt process is used to tightly bond the elastic fiber balls 9 to the fiber bundles at the grid intersections, ensuring a firm connection between the elastic fiber balls 9 and the elastic support body 8, without altering the original spiral shape and grid aperture of the elastic support body 8 after bonding. The grid intersections are areas of concentrated stress on the elastic support body 8; the addition of elastic fiber balls 9 specifically enhances the buffering capacity of these areas, absorbing stress generated by external impacts or internal media fluctuations on the pipe. The elastic fiber balls 9 are evenly distributed along the spiral direction of the elastic support body 8, ensuring consistent buffering performance around the pipe's circumference and axis, avoiding structural damage caused by insufficient local buffering. The elastic characteristics of the elastic fiber balls 9 match those of the elastic support body 8, providing buffering without affecting the overall support and rebound function of the elastic support body 8.

[0048] The outer surface of the elastic fiber ball 9 is covered with silicone, and the inner layer of the elastic fiber ball 9 is reinforced with polyester fiber bundles.

[0049] Using injection molding or coating processes, a layer of high-temperature resistant silicone, identical in material to the inner silicone layer 3, is coated onto the inner surface of the elastic fiber ball 9. This ensures a uniform silicone coating thickness, no air bubbles, and complete coverage of the inner polyester fiber bundles. The inner polyester fiber bundles possess high elasticity, allowing the elastic fiber ball 9 to quickly return to its original shape after compression, extending the service life of the cushioning structure. The outer high-temperature resistant silicone coating, identical in material to the inner silicone layer 3, avoids corrosion and separation caused by incompatibility issues between different materials, while also enhancing the elastic fiber ball 9's resistance to media corrosion. The outer silicone layer isolates the external media from direct contact with the inner polyester fiber bundles, preventing performance degradation due to media erosion and further enhancing the stability of the elastic fiber ball 9.

[0050] like Figure 6 As shown, the inner wall of the inner silicone layer 3 is uniformly opened in the inner spiral groove 10, and the inner cavity of the inner spiral groove 10 is provided with wear-resistant protrusions 11.

[0051] The prefabricated wear-resistant ridge 11 is embedded into the inner cavity of the inner spiral groove 10. The wear-resistant ridge 11 and the inner spiral groove 10 are tightly connected by integral molding or bonding process to ensure that the ridge does not fall off or shift. The spiral trajectory formed by the inner spiral groove 10 and the wear-resistant ridge 11 can guide the medium in the pipe to flow in the spiral direction, reduce the turbulence of the medium, and reduce the local scouring of the inner wall by the turbulence. The wear-resistant ridge 11 is in direct contact with the medium, which can block the direct scouring of the inner wall of the inner silicone layer 3 by the small particles in the medium, avoid local wear and thinning of the inner silicone layer 3 or scratches, and ensure its sealing performance. The spacing of the inner spiral groove 10 can be adjusted according to the size of the medium particles to enhance the adaptability of the structure to different medium transportation scenarios and improve the versatility of the pipe.

[0052] The cross-section of the wear-resistant ridge 11 is a semi-circular elongated protrusion. The wear-resistant ridge 11 is spirally distributed along the inner silicone layer 3. The surface of the wear-resistant ridge 11 is coated with wear-resistant silicone.

[0053] A coating process is used to laminate a layer of wear-resistant silicone with added silicon carbide micropowder onto the surface of the wear-resistant ridge 11 substrate, ensuring complete coverage and tight bonding with the substrate. The elongated, semi-circular cross-section of the ridge reduces the contact resistance between the medium and the wear-resistant ridge 11 during flow, preventing a decrease in medium transport efficiency due to the ridge structure. The spiral direction of the wear-resistant ridge 11 along the axial direction of the inner silicone layer 3 is consistent with that of the elastic support 8, preventing torsional stress generated by the bidirectional spiral structure from damaging the overall pipe structure and ensuring the stability of the pipe structure. The laminated wear-resistant silicone significantly improves the erosion resistance of the wear-resistant ridge 11, further extending the service life of the inner silicone layer 3, making it suitable for long-term transport of media containing particles.

[0054] This embodiment provides a highly elastic and wear-resistant inner silicone braided tube: An inner silicone layer 3 with basic flexibility is prepared according to the preset inner diameter specification of the tube body 4 to ensure basic sealing and conveying performance; if an outer spiral groove 7 is required, an outer spiral groove 7 is opened on the outer surface of the inner silicone layer 3; if an inner spiral groove 10 and wear-resistant ridge 11 are required, an inner spiral groove 10 is uniformly opened on the inner wall of the inner silicone layer 3, and a wear-resistant ridge 11 is prepared. A coating process is used to laminate wear-resistant silicone onto the surface of the wear-resistant ridge 11 substrate, making the wear-resistant ridge 11 form a long strip-shaped protrusion with a semi-circular cross-section. The wear-resistant ridge 11 is then embedded into the inner cavity of the inner spiral groove 10 and fixed by integral molding or bonding processes, ensuring that the spiral direction of the wear-resistant ridge 11 along the axial direction of the inner silicone layer 3 is consistent with the spiral direction of the subsequent elastic support 8.

[0055] Multiple strands of elastic fiber bundles are selected and interwoven to form a mesh-like structure of elastic support body 8. If elastic fiber balls 9 need to be set, elastic fiber balls 9 are first prepared, with polyester fiber bundles as the inner layer. High-temperature resistant silicone with the same material as the inner silicone layer 3 is coated on the outer surface using injection molding or coating process. Then, the position and spacing of the grid intersection nodes of elastic support body 8 are determined, the nodes are marked according to the spiral direction of elastic support body 8, and the elastic fiber balls 9 are bonded to the nodes using hot melt process to ensure that the elastic fiber balls 9 are evenly distributed along the spiral direction and do not change the original shape of elastic support body 8.

[0056] Next, the elastic support 8 is attached and assembled along the trajectory of the outer spiral groove 7 on the outer surface of the inner silicone layer 3. If the outer spiral groove 7 is not provided, it is directly spirally wound onto the outer surface of the inner silicone layer 3, and fixed by silicone self-adhesion or auxiliary heat fusion to ensure that the two are tightly attached. A transition layer 2 is prepared, and an inner spiral groove 6 is opened on its inner wall so that the specifications of the inner spiral groove 6 match the spiral mesh structure of the elastic support 8. The transition layer 2 is sleeved on the outside of the elastic support 8, and precise positioning and preliminary fixation are achieved by the engagement of the inner spiral groove 6 with the elastic support 8, forming the inner layer combination structure of the tube body 4.

[0057] Warp and weft fibers are selected and an oblique cross-weaving process is used to form an outer braided wear-resistant layer 1. During the weaving process, wavy wear-resistant protrusions are set at intervals on the surface of the weft fibers. After the outer braided wear-resistant layer 1 is woven, a guide groove 5 is opened on its outer surface to ensure that the depth of the guide groove 5 is less than the height of the wavy wear-resistant protrusions.

[0058] Hot melt adhesive is applied to the outer wall of the transition layer 2 to form a hot melt adhesive dot matrix that is staggered along the axial direction of the tube body 4; the outer braided wear-resistant layer 1 is fitted onto the outside of the transition layer 2, and the inner wall of the outer braided wear-resistant layer 1 is bonded and fixed to the outer wall of the transition layer 2 through the hot melt adhesive dot matrix. Finally, the outer braided wear-resistant layer 1, the transition layer 2, the inner silicone layer 3 and the elastic support 8 together form the complete tube body 4.

[0059] When the tube body 4 is in use, the elastic support body 8 disperses the compressive stress through a grid structure, and the spiral distribution enhances the radial support force, helping the tube body 4 to quickly recover after being deformed by pressure. The "mechanical interlocking" structure of the transition layer 2 and the elastic support body 8 reduces relative sliding, and the hot melt adhesive dot matrix bonding between the outer braided wear-resistant layer 1 and the transition layer 2 avoids stress concentration between layers. The oblique cross structure of the outer braided wear-resistant layer 1 improves the overall strength, the wavy wear-resistant protrusions increase the friction contact area, and the guide groove 5 guides the discharge of friction debris. The inner spiral groove 10 and the wear-resistant ridge 11 guide the spiral flow of the medium and reduce turbulence. The wear-resistant ridge 11 blocks the small particles in the medium from scouring the inner wall of the inner silicone layer 3. The elastic fiber ball 9 enhances the buffering capacity of the grid cross nodes, absorbs external impact or internal medium fluctuation stress, and its outer silicone layer avoids material compatibility issues. The inner polyester fiber bundle ensures elastic recovery. The outer braided wear-resistant layer 1 and the elastic support body 8 work together to suppress the initial expansion of transverse tears and alleviate the transmission of tear stress to the inside.

[0060] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A high-elasticity wear-resistant inner silica gel and outer braided tube, comprising an outer braided wear-resistant layer, characterized in that: The inner wall of the outer braided wear-resistant layer is connected to a transition layer. The outer braided wear-resistant layer and the transition layer are bonded together by a hot melt adhesive matrix. The outer braided wear-resistant layer is made of warp and weft fibers woven obliquely. The surface of the weft fibers is provided with wavy wear-resistant protrusions at intervals. An inner silicone layer is added to the inner cavity of the transition layer. An elastic support is added to the outer surface of the inner silicone layer. The elastic support is formed by interlacing elastic fiber bundles to form a mesh structure. The elastic support is spirally wound around the outer surface of the inner silicone layer. The outer braided wear-resistant layer, the transition layer, the inner silicone layer and the elastic support form a tube. The hot melt adhesive matrix is ​​designed to be staggered along the axial direction of the tube. The inner wall of the transition layer has an inner spiral groove. The transition layer is engaged with the elastic support through the inner spiral groove. The outer surface of the outer braided wear-resistant layer has a guide groove. The depth of the guide groove is less than the height of the wavy wear-resistant protrusions.

2. The high-elasticity, wear-resistant inner silicone braided tube according to claim 1, characterized in that: The outer surface of the inner silicone layer is provided with an outer spiral groove, and the elastic support is connected to the inner silicone layer through the outer spiral groove.

3. The high-elasticity wear-resistant inner silica gel and outer braided tube according to claim 1, characterized in that: Elastic fiber balls are added to the grid intersection nodes of the elastic support, and the elastic fiber balls are evenly distributed along the spiral direction of the elastic support.

4. The high-elasticity wear-resistant inner silica gel and outer braided tube according to claim 3, characterized in that: The outer surface of the elastic fiber ball is covered with silicone, and the inner layer of the elastic fiber ball is reinforced with polyester fiber bundles.

5. The high elasticity wear resistant inner silica gel and outer braided tube according to claim 1, characterized in that: The inner wall of the inner silicone layer is uniformly formed with inner spiral grooves, and the inner cavity of the inner spiral grooves is provided with wear-resistant protrusions.

6. The high elasticity wear resistant inner silica gel and outer braided tube according to claim 5, characterized in that: The wear-resistant protrusions have a semi-circular elongated protrusion in cross-section. The wear-resistant protrusions are spirally distributed along the axial direction of the inner silicone layer, and the surface of the wear-resistant protrusions is coated with wear-resistant silicone.

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