PVC (polyvinyl chloride) double-glue double-line winding crocheting reinforced pipe
By introducing a double-threaded braided reinforcement layer into PVC pipes, the problem of insufficient tensile and torsional strength of traditional PVC pipes is solved, and a significant improvement in tensile strength and torsional performance is achieved.
Patent Information
- Application Number
- CN202520537713.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional PVC pipes have insufficient tensile strength and torsion resistance, making them prone to deformation due to water pressure or external forces, which affects their service life.
The tube adopts a PVC double-layer double-thread winding and hook-braiding structure, including an outer tube, an inner tube, and a reinforcing layer. The reinforcing layer is formed by two sets of threads wound and hooked in opposite spiral directions to form a mesh structure. The inner winding thread and the outer hook-braided thread interweave to form nodes. The reinforcing layer is made of nylon, polyester, or high-modulus polyethylene fiber. The inner tube and the outer tube are processed by an injection molding machine to form a stable bond.
It significantly improves the tensile strength and torsional properties of PVC pipes, increasing tensile strength by 100%-200% and torsional strength by more than 150%, thus enhancing the durability of the pipes.
Smart Images
Figure CN223690563U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PVC pipe technical field, concretely is a kind of PVC two glue double-line winding hook knitting reinforced pipe. BACKGROUND
[0002] The main component of PVC pipe is polyvinyl chloride, which can be used for transporting liquid. Because of its low manufacturing cost, easy processing, easy storage and other advantages, it is widely used in production and life. However, traditional PVC pipes are usually made of single-layer PVC structure, and due to the limitations of the material itself, they have insufficient tensile strength and are easily distorted by external forces. Moreover, to reduce the weight of the pipe body, the thickness of the pipe wall is reduced, which can easily lead to a decrease in the strength of the PVC pipe. The PVC pipe with thin wall has weak tensile and torsional resistance. In actual use, the PVC pipe may be deformed due to high water pressure inside the pipe or external stretching force, affecting the transportation effect. In severe cases, the pipe may be damaged, making it impossible to use normally, thus affecting the service life of the PVC pipe. SUMMARY
[0003] The utility model aims to provide a PVC two glue double-line winding hook knitting reinforced pipe with better torsional resistance and tensile resistance to overcome the problems in the prior art.
[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a PVC two glue double-line winding hook knitting reinforced pipe, which comprises an outer rubber tube, an inner rubber tube arranged inside the outer rubber tube and a reinforcing layer. The outer rubber tube and the inner rubber tube are both PVC pipes, and the reinforcing layer is arranged between the outer rubber tube and the inner rubber tube. The reinforcing layer is a mesh structure formed by winding two groups of wires in opposite spiral directions and hook knitting.
[0005] Based on the above technical scheme, the utility model can be further improved as follows:
[0006] As a further improvement of the above technical scheme, the two groups of wires include a group of inner winding wires and a group of outer hook knitting wires arranged intersectingly. The outer hook knitting wires are located inside the inner winding wires, and the outer hook knitting wires are attached to the inner surface of the outer rubber tube. The inner winding wires are attached to the outer surface of the inner rubber tube.
[0007] As a further improvement of the above technical scheme, the inner winding wires are wound on the outer surface of the inner rubber tube at an angle of 45-60°. The outer hook knitting wires are hook-knitted on the inner winding wires. The inner winding wires and the outer hook knitting wires intersect to form a plurality of interlaced nodes, and the node density is 10-20 nodes / cm².
[0008] As a further improvement of the above technical scheme, the wires are made of nylon, polyester, aramid or high-modulus polyethylene fiber, and the wire diameter is 0.2-0.5 mm.
[0009] As a further improvement of the above technical solution, the inner rubber tube is processed by heating PVC particles by an injection molding machine, and the thickness is 5-15mm; the outer rubber tube 1 is wrapped outside the reinforcing layer, and the thickness is 3-6mm, and the outer rubber tube and the inner rubber tube fix the reinforcing layer together.
[0010] As a further improvement of the above technical solution, the wire is selected from polyester fibers with a diameter of 0.3mm, the thickness of the inner rubber tube 2 is 10mm, the thickness of the outer rubber tube 1 is 5mm, the winding angle is 55°, and the hooking node density is 15 / cm².
[0011] The beneficial effects of the utility model are:
[0012] 1. The tensile strength is improved: the double-wire winding hooking structure formed by the inner winding wire 31 and the outer hooking wire 32 of the PVC two-rubber double-wire winding hooking reinforcing pipe makes the stress uniformly distributed, and the tensile strength reaches 50-80MPa, which is improved by 100%-200% compared with the traditional PVC pipe.
[0013] 2. Excellent torsional performance: the mesh structure formed by winding and hooking in opposite spiral directions of the PVC two-rubber double-wire winding hooking reinforcing pipe makes the torsional strength improved by more than 150% compared with the traditional PVC pipe. BRIEF DESCRIPTION OF DRAWINGS
[0014] The utility model is further described below in combination with the drawings and examples.
[0015] Figure 1 is the structure schematic view of the PVC two-rubber double-wire winding hooking reinforcing pipe provided by the preferred embodiment of the utility model;
[0016] Figure 2 is Figure 1 the side view of the PVC two-rubber double-wire winding hooking reinforcing pipe in
[0017] Figure 3 is Figure 2 the structure schematic view of the inner winding wire in
[0018] Figure 4 is Figure 2 the structure schematic view of the outer hooking wire in
[0019] In the drawing: 1, outer rubber tube; 2, inner rubber tube; 3, reinforcing layer; 31, inner winding wire; 32, outer hooking wire. DETAILED DESCRIPTION
[0020] The utility model will be further described in detail in combination with the drawings and examples, and these drawings are all simplified schematic views, and only illustrate the basic structure of the utility model in a schematic manner, so it only shows the related structure of the utility model.
[0021] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on the orientation or positional relation indicated is based on the orientation or positional relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and so on are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0022] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.
[0023] As Figures 1 to 4 The utility model provides a kind of PVC two glue double line winding hook weaving reinforced pipe, including outer tube 1, the inner tube 2 of being located outer tube 1 inner side and reinforcing layer 3, reinforcing layer 3 is tightly attached between outer tube 1 and inner tube 2, outer tube 1 and inner tube 2 are PVC pipe, reinforcing layer 3 is the mesh structure formed by two groups of wire in opposite spiral direction winding and hook weaving.
[0024] The two groups of wire are high-strength wire, and the diameter of the wire is 0.2-0.5mm. Preferably, the wire is nylon, polyester, aramid or high modulus polyethylene fiber, which is pretreated by surface coating PVC glue solution to enhance the adhesion with the inner tube 2 and the outer tube 1.
[0025] The two groups of wires include a group of inner winding wires 31 and a group of outer hooking wires 32 arranged in intersection, the outer hooking wires 32 are located on the inner side of the inner winding wires 31, the outer hooking wires 32 are attached to the inner surface of the outer rubber tube 1, and the inner winding wires 31 are attached to the outer surface of the inner rubber tube 2. The inner winding wires 31 are wound on the outer surface of the inner rubber tube 2 at an angle of 45-60°, the outer hooking wires 32 are hooked on the inner winding wires 31, the inner winding wires 31 and the outer hooking wires 32 intersect to form a plurality of interlaced nodes, the node density is 10-20 nodes per square centimeter, and the inner winding wires 31 and the outer hooking wires 32 form a double-wire winding hooking structure to uniformly distribute stress.
[0026] The inner rubber tube 2 is processed by heating PVC particles by an injection molding machine, and the thickness is 5-15 mm; the outer rubber tube 1 is wrapped on the outer side of the reinforcing layer 3, and the thickness is 3-6 mm, and the outer rubber tube 1 and the inner rubber tube 2 jointly fix the reinforcing layer 3. Preferably, the thickness of the outer rubber tube 1 is 5 mm, and the thickness of the inner rubber tube 2 is 10 mm.
[0027] The inner rubber tube 2 directly contacts with the delivered liquid, and the outer rubber tube 1 is sleeved on the inner rubber tube 2, which can be used to protect the inner rubber tube 2 on the inner side, can withstand wear and corrosion, and can prevent damage from the external environment. 5-10% plasticizer (such as DOP), 2-5% heat stabilizer (such as calcium-zinc composite agent) and anti-ultraviolet agent are added to the inner rubber tube 2 and the outer rubber tube 1.
[0028] The manufacturing method of the PVC double-rubber double-wire winding hooking reinforcing pipe is as follows:
[0029] Firstly, an injection molding machine is used to process PVC particles into an inner rubber tube 2 by heating, then a winding machine is used to spiral wind a group of inner winding wires 31 on the outer surface of the inner rubber tube 2 at a set angle, and then a hooking machine is used to hook and interweave a group of outer hooking wires 32 with the inner winding wires 31, and after heating by a heater, an injection molding machine is used to injection mold a PVC outer layer on the outer circumferential surface of the reinforcing layer 3 to form an outer rubber tube 1 wrapped around the reinforcing layer 3; then the inner rubber tube 2 and the outer rubber tube 1 are fused and bonded with the reinforcing layer 3 through high-temperature vulcanization (160-180℃, 5-10 minutes); finally, after cooling in cold water, the above-mentioned PVC double-rubber double-wire winding hooking reinforcing pipe is manufactured.
[0030] The wire diameter of the above-mentioned wire is 0.3 mm, the surface is coated with a glue solution containing 10% PVC, the thickness of the inner rubber tube 2 is 10 mm, the thickness of the outer rubber tube 1 is 5 mm, the winding angle is 55°, the hooking node density is 15 nodes per square centimeter, the vulcanization temperature is 170℃, and the time is 8 minutes. Test results: tensile strength ≥ 70 MPa, torsional failure torque ≥ 120 N·m, and axial compression deformation rate < 5%.
[0031] The PVC two-gum double-wire winding hook-weaving reinforced pipe provided by the utility model significantly improves the tensile resistance, torsion resistance and creep resistance of the pipe material.
[0032] The above not involved in the specific embodiments of the utility model for the description of the known art, can be implemented by reference to the known art.
[0033] The above according to the ideal embodiment of the utility model for the inspiration, through the above description, relevant personnel can certainly carry out various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A PVC two adhesive double wire wound hook braided reinforced pipe, characterized in that: The pipe comprises an outer rubber tube, an inner rubber tube arranged inside the outer rubber tube, and a reinforcing layer, the outer rubber tube and the inner rubber tube are both PVC pipes, the reinforcing layer is arranged between the outer rubber tube and the inner rubber tube, and the reinforcing layer is a mesh structure formed by winding two groups of wires in opposite spiral directions and hooking.
2. The PVC two adhesive double wire wound hook-plied reinforced pipe according to claim 1, characterized in that: The two groups of wires comprise a group of inner winding wires and a group of outer hooking wires arranged in intersection, the outer hooking wires are located inside the inner winding wires, the outer hooking wires are combined with the inner surface of the outer rubber tube, and the inner winding wires are combined with the outer surface of the inner rubber tube.
3. The PVC two adhesive double wire wound hook reinforced pipe according to claim 2, characterized in that: The inner winding wires are wound on the outer surface of the inner rubber tube at an angle of 45-60°, the outer hooking wires are hooked on the inner winding wires, the inner winding wires and the outer hooking wires intersect to form a plurality of interlaced nodes, and the node density is 10-20 / cm².
4. The PVC two adhesive double wire wound hook-plied reinforced pipe according to claim 3, characterized in that: The wires are nylon, polyester, aramid or high modulus polyethylene fibers, and the wire diameter is 0.2-0.5 mm.
5. The PVC two adhesive double wire wound hook-plied reinforced pipe according to claim 4, characterized in that: The inner rubber tube is processed by heating PVC particles through an injection molding machine, and the thickness is 5-15 mm; the outer rubber tube (1) is wrapped outside the reinforcing layer, and the thickness is 3-6 mm, the outer rubber tube and the inner rubber tube jointly fix the reinforcing layer.
6. The PVC two adhesive double wire wound hook-plied reinforced pipe according to claim 5, characterized in that: The wire diameter is 0.3 mm, the thickness of the inner rubber tube (2) is 10 mm, the thickness of the outer rubber tube (1) is 5 mm, the winding angle is 55°, and the hooking node density is 15 / cm².