PVC (polyvinyl chloride) double-woven anti-twisting spiral hose
By incorporating anti-deformation strips and braided reinforcement layers on the outer side of the inner layer of the PVC hose, the problems of torsion deformation and delamination of the PVC hose under external forces are solved, achieving better anti-torsion, anti-pressure, and explosion-proof performance, making it suitable for medical, industrial, and garden courtyard applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-15
- Publication Date
- 2026-03-27
AI Technical Summary
PVC hoses are prone to twisting and deformation due to external forces during use, which can lead to twisting and bursting. In addition, the multi-layer composite structure is prone to loose connections between the braided layer and the hose, which cannot meet the anti-torsion and anti-pressure explosion-proof performance requirements in high-pressure and long-distance working environments.
An anti-deformation strip is set on the outside of the inner polyvinyl chloride layer, and a braided reinforcement layer is fitted on it. The inner surface of the braided reinforcement layer abuts against the anti-deformation strip. The outer polyvinyl chloride layer is fitted on the outside of the braided reinforcement layer. The anti-deformation strip strengthens the connection between the inner and outer layers, and together with the grid structure of the braided reinforcement layer, a multi-layer composite structure is formed.
It enhances the torsion resistance of PVC hoses, prevents delamination, and improves pressure resistance and explosion-proof performance, making it suitable for medical, industrial, and garden applications.
Smart Images
Figure CN224049859U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of hose, especially relates to a PVC double-braided anti-torsion spiral hose. BACKGROUND
[0002] The PVC hose is made of polyvinyl chloride resin as the main raw material, adding plasticizer, stabilizer, lubricant and various additives, and is made by extrusion process. It is generally used for conveying fluid or gas, and has been widely used in industry, agriculture, construction, home and medical fields due to its low cost, various performance and convenient processing.
[0003] Because the PVC material itself has certain flexibility, the PVC hose is easy to twist and deform when subjected to external force in actual use, resulting in torsional burst. Therefore, a plurality of fiber reinforced nets are usually compounded on the PVC hose to enhance the overall hardness of the PVC hose. However, the multi-layer composite structure not only increases the required materials and cost, but also easily causes loose connection between the braided layer and the rubber tube, resulting in delamination problem, which cannot provide the required anti-torsion and anti-pressure explosion-proof performance in high-pressure and long-distance operation environment. SUMMARY
[0004] Therefore, it is necessary to provide a PVC double-braided anti-torsion spiral hose.
[0005] The utility model solves the above technical problems, and the technical scheme is as follows: a PVC double-braided anti-torsion spiral hose comprises:
[0006] A polyvinyl chloride inner layer, a plurality of anti-variation strips are arranged on the outer surface of the polyvinyl chloride inner layer, and the anti-variation strips are distributed along the axial direction of the polyvinyl chloride inner layer;
[0007] A braided reinforcing layer is arranged on the polyvinyl chloride inner layer, and the inner surface of the braided reinforcing layer abuts against the anti-variation strips;
[0008] A polyvinyl chloride outer layer is arranged on the outer surface of the braided reinforcing layer, and the polyvinyl chloride outer layer is connected with the polyvinyl chloride inner layer through the braided reinforcing layer.
[0009] In one embodiment, the polyvinyl chloride inner layer and the anti-variation strips are arranged in an integral structure.
[0010] In one embodiment, the anti-variation strips are uniformly distributed on the outer surface of the polyvinyl chloride inner layer.
[0011] In one embodiment, the cross-sectional shape of the anti-variation strip is trapezoidal, square, triangular or semicircular.
[0012] In one embodiment, the woven reinforcing layer comprises: a first wire-woven layer and a second wire-woven layer, the first wire-woven layer is formed by spirally winding a first fiber rope on the inner PVC layer, the second wire-woven layer is formed by spirally winding a second fiber rope on the first wire-woven layer, the spirally winding direction of the first fiber rope is different from the spirally winding direction of the second fiber rope, and the first fiber rope and the second fiber rope are interwoven to form a plurality of grid structures.
[0013] In one embodiment, the spiral angle of the first fiber rope is set to 30°-60°, and the spiral angle of the second fiber rope is set to 30°-60°.
[0014] In one embodiment, the spiral angle of the first fiber rope is equal to the spiral angle of the second fiber rope.
[0015] In one embodiment, the number of the first fiber rope is set to two or more, and the number of the second fiber rope is set to two or more.
[0016] In one embodiment, the first fiber rope is a double-strand rope, and the second fiber rope is a double-strand rope.
[0017] In one embodiment, the thickness of the inner PVC layer is greater than the thickness of the outer PVC layer.
[0018] The PVC double-woven anti-torsion spiral hose has the advantages that: the anti-torsion strips are arranged on the outer surface of the inner PVC layer, the woven reinforcing layer is sleeved on the inner PVC layer and abuts against the anti-torsion strips, and the outer PVC layer is sleeved on the outer surface of the woven reinforcing layer, so that the anti-torsion performance of the PVC double-woven anti-torsion spiral hose is improved, the inner PVC layer and the outer PVC layer are more firmly attached, the delamination is avoided, the anti-pressure and anti-explosion effects are better, and the performance requirements in medical, industrial and garden and courtyard scenes are met. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0020] Figure 1A structural schematic view of a PVC double-braided anti-kink spiral hose according to an embodiment;
[0021] Figure 2 A sectional structural schematic view of a PVC double-braided anti-kink spiral hose according to an embodiment;
[0022] Figure 3 A structural schematic view of a PVC inner layer according to an embodiment.
[0023] In the drawings: 10, PVC double-braided anti-kink spiral hose; 100, PVC inner layer; 110, anti-kink strip; 200, braided reinforcing layer; 210, first winding braided layer; 220, second winding braided layer; 300, PVC outer layer. DETAILED DESCRIPTION
[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions of the present application will be further described below with reference to the drawings of the embodiments of the present application. The present application is not limited to the following specific embodiments.
[0025] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus the terms describing the positional relationships in the drawings cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated in a specific orientation, and thus the terms describing the positional relationships in the drawings are only used for exemplary illustration and cannot be understood as limiting the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.
[0026] In one embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , a PVC double-braided anti-kink spiral hose 10 comprises a PVC inner layer 100, a braided reinforcing layer 200, and a PVC outer layer 300, an outer side surface of the PVC inner layer 100 is provided with a plurality of anti-kink strips 110, each of the anti-kink strips 110 is distributed along an axial direction of the PVC inner layer 100, the braided reinforcing layer 200 is sleeved on the PVC inner layer 100, and an inner side surface of the braided reinforcing layer 200 abuts against each of the anti-kink strips 110, the PVC outer layer 300 is sleeved on an outer side surface of the braided reinforcing layer 200, and the PVC outer layer 300 is connected with the PVC inner layer 100 at least partially through the braided reinforcing layer 200.
[0027] In the embodiment, the inner layer 100 is a hollow tubular structure, a plurality of anti-deformation strips 110 are arranged on the outer surface of the inner layer 100, the first side of each anti-deformation strip 110 is connected with the outer surface of the inner layer 100, the woven reinforcing layer 200 is sleeved on the inner layer 100 and abuts against the second side of each anti-deformation strip 110, and the outer layer 300 is sleeved on the outer surface of the woven reinforcing layer 200 to obtain the PVC double-woven anti-deformation spiral hose 10. In this way, by arranging the anti-deformation strips 110, the mechanical strength of the inner layer 100 is enhanced, the PVC double-woven anti-deformation spiral hose 10 has better anti-deformation performance, the connection area between the inner layer 100 and the outer layer 300 is increased, the inner layer 100 and the outer layer 300 are more firmly attached, the delamination is avoided, the anti-pressure and anti-explosion effect is better, and the performance requirements in medical, industrial and garden scenarios are met.
[0028] In one embodiment, as shown in Figure 2 and Figure 3 , the inner layer 100 and the anti-deformation strips 110 are arranged in an integrated structure, and the anti-deformation strips 110 are uniformly distributed on the outer surface of the inner layer 100. Specifically, by arranging the inner layer 100 and the anti-deformation strips 110 in an integrated structure, the stability of the overall structure is enhanced, the anti-deformation strips 110 are uniformly distributed on the outer surface of the inner layer 100, and the stress can be better dispersed when an external force is applied, so that the tensile and torsional properties of the PVC double-woven anti-deformation spiral hose 10 are further improved.
[0029] In one embodiment, the cross-sectional shape of the anti-deformation strip 110 is arranged as a trapezoid, a square, a triangle or a semicircle. Specifically, the cross-sectional shape of the anti-deformation strip 110 is arranged as a trapezoid, a square, a triangle or a semicircle, which can improve the anti-deformation performance of the PVC double-woven anti-deformation spiral hose 10, increase the surface area of the inner layer 100, and make the inner layer 100 and the outer layer 300 more firmly attached. The anti-deformation strips 110 with different cross-sectional shapes can be selected according to the specific application scenario to balance the performance and cost, and the anti-deformation strips 110 with different cross-sectional shapes are not limited in the embodiment.
[0030] In one embodiment, as shown in Figure 1 and Figure 2As shown, the woven reinforcing layer 200 comprises: a first wire-woven layer 210 and a second wire-woven layer 220, the first wire-woven layer 210 is formed by spirally winding a first fiber rope on the inner PVC layer 100, the second wire-woven layer 220 is formed by spirally winding a second fiber rope on the first wire-woven layer 210, the spirally winding direction of the first fiber rope is different from that of the second fiber rope, and the first fiber rope and the second fiber rope are interwoven to form a plurality of grid structures. Specifically, the first wire-woven layer 210 and the second wire-woven layer 220 are spirally wound on the inner PVC layer 100 in sequence, for example, the first fiber rope of the first wire-woven layer 210 is spirally wound on the inner PVC layer 100 in a positive spiral, the second fiber rope of the second wire-woven layer 220 is spirally wound on the first wire-woven layer 210 in a reverse spiral, and the first wire-woven layer 210 and the second wire-woven layer 220 are bidirectionally spirally interwoven to form a mesh structure, which can uniformly disperse the internal fluid pressure of the inner PVC layer 100, limit radial expansion, and prevent local expansion or rupture. At the same time, it can also provide axial stiffness, improve torsional resistance and tensile strength, so that the PVC double-woven torsion-resistant spiral hose 10 is more flexible and has better torsional resistance and pressure resistance.
[0031] In one embodiment, the spiral angle of the first fiber rope is set to 30°-60°, and the spiral angle of the second fiber rope is set to 30°-60°. Specifically, the first fiber rope is spirally wound on the inner PVC layer 100 to form the first wire-woven layer 210, and the second fiber rope is spirally wound on the first wire-woven layer 210 to form the second wire-woven layer 220. The smaller the spiral winding angle, the better the tensile performance, and the larger the spiral winding angle, the better the flexibility. The spiral angle of the first fiber rope and the spiral angle of the second fiber rope can be adjusted according to the required mechanical properties of the PVC double-woven torsion-resistant spiral hose 10, which is not specifically limited in this embodiment.
[0032] In one embodiment, the spiral angle of the first fiber rope is equal to the spiral angle of the second fiber rope. Specifically, by setting the same spiral angle of the first fiber rope and the spiral angle of the second fiber rope, the axial and circumferential mechanical properties can be balanced, so that the mechanical properties of the PVC double-woven torsion-resistant spiral hose 10 are balanced, and the tensile, explosion-proof and torsional resistance performance are better.
[0033] In one embodiment, the number of the first fiber ropes is set to two or more, and the number of the second fiber ropes is set to two or more. Specifically, by setting the number of the first fiber ropes and the number of the second fiber ropes to two or more, each first fiber rope is synchronously interwoven on the polyvinyl chloride inner layer 100 to form the first winding braid layer 210, and each second fiber rope is synchronously interwoven on the first winding braid layer 210 to form the second winding braid layer 220, which can significantly improve the tensile strength, and the three-dimensional braid structure formed by the multi-rope winding can effectively resist internal pressure and torque, and better enhance the explosion-proof and anti-twist performance.
[0034] In one embodiment, the first fiber rope is a double-stranded rope, and the second fiber rope is a double-stranded rope. Specifically, the first fiber rope and the second fiber rope are both stranded ropes, which are rope structures formed by combining a plurality of monofilaments or single-strand ropes through a twisting process, which can give the first winding braid layer 210 and the second winding braid layer 220 better performance in resisting internal pressure and torque. Further, the use of double-stranded ropes for interweaving to form the braid reinforcing layer 200, i.e., the use of two parallel stranded ropes for winding and interweaving, can make the braid reinforcing layer 200 more flexible and pressure-resistant, so that the double-strand cooperation can further improve the tensile and anti-twist performance.
[0035] In one embodiment, the thickness of the polyvinyl chloride inner layer 100 is greater than the thickness of the polyvinyl chloride outer layer 300. Specifically, by setting the thickness of the polyvinyl chloride inner layer 100 to be greater than the thickness of the polyvinyl chloride outer layer 300, not only better internal pressure resistance can be provided, but also a better inner layer support structure can be formed, which can optimize the anti-twist performance.
[0036] Compared with the prior art, the utility model has at least the following advantages:
[0037] The PVC double-braid anti-twist spiral hose provided by the utility model has the advantages that the anti-twist performance of the PVC double-braid anti-twist spiral hose is enhanced by the anti-twist strips, the polyvinyl chloride inner layer and the polyvinyl chloride outer layer are more firmly attached, delamination is avoided, better pressure resistance and explosion-proof effects are achieved, and the performance requirements for use in medical, industrial and garden and courtyard scenes are met.
[0038] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.
Claims
1. A PVC double braided kink resistant spiral hose characterized in that, The utility model relates to a kind of polyvinyl chloride pipe, including: Polyvinyl chloride inner layer, the outer side surface of the polyvinyl chloride inner layer is provided with a plurality of anti-variable strips, each anti-variable strip is distributed along the axial direction of the polyvinyl chloride inner layer; Woven reinforcement layer, the woven reinforcement layer is sleeved on the polyvinyl chloride inner layer, and the inner side surface of the woven reinforcement layer is abutted to each anti-variable strip; Polyvinyl chloride outer layer, the polyvinyl chloride outer layer is sleeved on the outer side surface of the woven reinforcement layer, and the polyvinyl chloride outer layer is connected with the polyvinyl chloride inner layer at least partially through the woven reinforcement layer.
2. The PVC double braided kink resistant spiral hose according to claim 1, characterized in that, The polyvinyl chloride inner layer and each anti-variable strip are provided in an integral structure.
3. The PVC double braided kink resistant spiral hose according to claim 2, characterized in that, Each anti-variable strip is uniformly distributed on the outer side surface of the polyvinyl chloride inner layer.
4. The PVC double braided kink resistant spiral hose according to claim 3, characterized in that, The cross-sectional shape of the anti-variable strip is set to trapezoidal, square, triangular or semicircular.
5. The PVC double braided kink resistant spiral hose of claim 1, wherein, The woven reinforcement layer includes: a first wire-wound woven layer and a second wire-wound woven layer, the first wire-wound woven layer is formed by spirally winding a first fiber rope on the polyvinyl chloride inner layer, the second wire-wound woven layer is formed by spirally winding a second fiber rope on the first wire-wound woven layer, the spirally winding direction of the first fiber rope and the spirally winding direction of the second fiber rope are different, and the first fiber rope and the second fiber rope are interwoven to form a plurality of grid structures.
6. The PVC double-braided kink resistant spiral hose of claim 5, wherein, The spiral angle of the first fiber rope is set to 30°-60°, and the spiral angle of the second fiber rope is set to 30°-60°.
7. The PVC double-braided kink resistant spiral hose of claim 6, wherein, The spiral angle of the first fiber rope is equal to the spiral angle of the second fiber rope.
8. The PVC double-braided kink resistant spiral hose of claim 7, wherein, The number of the first fiber rope is set to two or more, and the number of the second fiber rope is set to two or more.
9. The PVC double-braided kink resistant spiral hose of claim 8, wherein, The first fiber rope is a double-strand rope, and the second fiber rope is a double-strand rope.
10. The PVC double braided kink resistant spiral hose of claim 1, wherein, The thickness of the polyvinyl chloride inner layer is greater than the thickness of the polyvinyl chloride outer layer.