Three-wire parallel-wound fiber reinforced hose

Abstract

The utility model discloses a three-wire parallel winding fiber reinforced hose, which comprises an inner-layer pipe, a fiber layer sleeved on the outer wall of the inner-layer pipe and an outer-layer pipe sleeved on the outer wall of the fiber layer, the fiber layer is formed by twisting three polyester yarns, and the fiber layer is connected with the inner-layer pipe and the outer-layer pipe through hot melting. The outer wall of the inner-layer pipe is provided with an external thread, fibers of the fiber layer can be clamped in a groove of the external thread, the inner wall of the outer-layer pipe is provided with an internal thread, and fibers of the fiber layer can be clamped in a groove of the internal thread; the interlayer of the hose is the fiber layer formed by twisting the three polyester silks, compared with traditional polypropylene silks, the strength is higher, diffusion is not prone to occurring, the pressure bearing capacity is improved by nearly two times, the price of the polyester silks is lower than that of the polypropylene silks, and therefore the cost of the hose is lower; and the silk threads of the fiber layer are clamped in the inner grooves of the inner threads and the outer threads, so that the overall strength of the hose is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoses, in particular to a three-wire parallel-wound fiber-reinforced hose. Background Art

[0002] PVC hoses are low in production cost and easy to process, and are widely used in the transportation of fluids or gases. However, in actual applications, single-layer hoses are easily worn during use, and have poor tensile strength. In a tensile working environment, they are prone to breakage when stretched longitudinally. In addition, since the outer surface of the single-layer hose has no additional structure, it is more susceptible to aging and corrosion in the air.

[0003] Therefore, PVC fiber reinforced hoses have also appeared. The fiber reinforced PVC hoses are generally composed of an inner tube, an outer tube, and a reinforcement layer between the inner tube and the outer tube. Among them, the inner tube and the outer tube are both common PVC plastic hoses, and the reinforcement layer is made of polypropylene yarn woven into a mesh. The polypropylene yarn reinforcement layer in the existing PVC fiber reinforced hoses of this structure has a uneven mesh of divergent polypropylene yarns between the inner tube and the outer tube, with many burrs, which is ugly and affects the appearance.

[0004] Moreover, the strength of the diffused polypropylene fiber reinforcement layer is not enough, which affects the strength of the entire PVC hose. In some use environments with high pressure and high requirements for hose strength, the existing PVC hose is difficult to meet the use requirements. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems and / or the problems existing in the existing three-wire parallel-wound fiber-reinforced hose, the utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a three-wire parallel-wound fiber-reinforced hose. The interlayer of the hose is a fiber layer formed by twisting three polyester filaments. Compared with traditional polypropylene filaments, it has higher strength and is not easy to diverge. The pressure bearing capacity is nearly doubled, and polyester filaments are cheaper than polypropylene filaments, which makes the hose cost lower; and the silk threads of the fiber layer are stuck in the inner grooves of the internal and external threads, further reducing the possibility of fiber layer deviation and divergence, and increasing the overall strength of the hose; and the inner wall of the inner layer tube is coated with a high-temperature resistant coating of silicon carbide coating, which can increase the heat resistance of the hose.

[0008] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] A three-wire parallel-wound fiber-reinforced hose, comprising:

[0010] An inner tube, a fiber layer sleeved on the outer wall of the inner tube, and an outer tube sleeved on the outer wall of the fiber layer, wherein the fiber layer is formed by twisting three polyester yarns, the fiber layer is connected to the inner tube and the outer tube by hot-melt connection, and an external thread is opened on the outer wall of the inner tube, and the fiber yarns of the fiber layer can be stuck in the groove of the external thread.

[0011] As a preferred solution of the three-wire parallel-wound fiber-reinforced hose described in the utility model, an internal thread is provided on the inner wall of the outer tube, and the fiber filaments of the fiber layer can be stuck in the groove of the internal thread.

[0012] As a preferred solution of the three-wire parallel-wound fiber-reinforced hose described in the utility model, the inner layer tube and the outer layer tube are both PVC tubes.

[0013] As a preferred solution of the three-wire parallel-wound fiber-reinforced hose described in the utility model, the diameter of the fiber filaments in the fiber layer is 8-9 microns.

[0014] As a preferred solution of the three-wire parallel-wound fiber-reinforced hose described in the utility model, the inner wall of the inner layer tube is coated with a high-temperature resistant coating, and the high-temperature resistant coating is a silicon carbide coating.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the interlayer of the hose is a fiber layer formed by twisting three polyester filaments, which has higher strength and is not easy to diverge compared with traditional polypropylene filaments, and the pressure bearing capacity is nearly doubled, and the price of polyester filaments is lower than that of polypropylene filaments, which makes the cost of the hose lower; and the silk threads of the fiber layer are stuck in the inner grooves of the internal and external threads, further reducing the possibility of fiber layer deviation and divergence, and increasing the overall strength of the hose; and the inner wall of the inner tube is coated with a high-temperature resistant coating of silicon carbide coating, which can increase the heat resistance of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1This is a schematic structural diagram of a three-wire parallel-wound fiber-reinforced hose of the utility model;

[0018] Figure 2 This is a cross-sectional view of a three-wire parallel-wound fiber-reinforced hose of the utility model;

[0019] Figure 3 This utility model is a three-wire parallel-wound fiber-reinforced hose Figure 2 A partial enlarged view of middle A;

[0020] Figure 4 The utility model discloses a three-thread parallel-wound fiber reinforced hose having a fiber layer with three polyester yarns. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides a three-wire parallel-wound fiber-reinforced hose. The interlayer of the hose is a fiber layer formed by twisting three polyester filaments. Compared with traditional polypropylene filaments, the interlayer has higher strength and is not easy to diverge, and the pressure bearing capacity is nearly doubled. In addition, the price of polyester filaments is lower than that of polypropylene filaments, which makes the cost of the hose lower. The threads of the fiber layer are stuck in the inner grooves of the internal and external threads, which further reduces the possibility of displacement and divergence of the fiber layer and increases the overall strength of the hose. The inner wall of the inner layer tube is coated with a high-temperature resistant coating of silicon carbide coating, which can increase the heat resistance of the hose.

[0025] Figure 1-Figure 4 The overall structure diagram of a three-wire parallel-wound fiber-reinforced hose of the utility model is shown. Figure 1-Figure 4 The present embodiment is a three-wire parallel-wound fiber-reinforced hose, the main body of which includes:

[0026] An inner tube 1, a fiber layer 2 sleeved on the outer wall of the inner tube 1, and an outer tube 3 sleeved on the outer wall of the fiber layer 2, wherein the fiber layer 2 is formed by twisting three polyester yarns, and the fiber layer 2 is connected to the inner tube 1 and the outer tube 3 by hot melting, and an external thread 101 is provided on the outer wall of the inner tube 1, and the fiber yarns of the fiber layer 2 can be stuck in the groove of the external thread 101;

[0027] The inner wall of the outer tube 3 is provided with an internal thread 301, and the fiber filaments of the fiber layer 2 can be stuck in the groove of the internal thread 301; the inner tube 1 and the outer tube 3 are both PVC tubes; the fiber filaments of the fiber layer 2 have a diameter of 8-9 microns.

[0028] Furthermore, the inner wall of the inner tube 1 is coated with a high temperature resistant coating, and the high temperature resistant coating is a silicon carbide coating.

[0029] Combination Figure 1-Figure 4 The present embodiment is a three-wire parallel-wound fiber-reinforced hose, and the specific use process is as follows: the interlayer of the hose is a fiber layer 2 formed by twisting three polyester threads. Compared with traditional polypropylene threads, it has higher strength and is not easy to diverge, and the pressure bearing capacity is nearly doubled. In addition, polyester threads are cheaper than polypropylene threads, which makes the hose cost lower; and the threads of the fiber layer 2 are stuck in the inner grooves of the internal thread 301 and the external thread 101, further reducing the possibility of displacement and divergence of the fiber layer 2, and increasing the overall strength of the hose; and the inner wall of the inner layer tube 1 is coated with a high-temperature resistant coating of silicon carbide coating, which can increase the heat resistance of the hose.

[0030] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A three-wire parallel-wound fiber-reinforced hose, characterized in that: include: An inner tube (1), a fiber layer (2) sleeved on the outer wall of the inner tube (1), and an outer tube (3) sleeved on the outer wall of the fiber layer (2), wherein the fiber layer (2) is formed by twisting three polyester yarns, the fiber layer (2) is connected to the inner tube (1) and the outer tube (3) by hot-melt connection, and an external thread (101) is provided on the outer wall of the inner tube (1), and the fiber yarns of the fiber layer (2) can be stuck in the grooves of the external thread (101).

2. A three-wire parallel-wound fiber-reinforced hose according to claim 1, characterized in that: An internal thread (301) is provided on the inner wall of the outer layer tube (3), and the fiber filaments of the fiber layer (2) can be stuck in the groove of the internal thread (301).

3. The three-wire parallel-wound fiber-reinforced hose according to claim 2, characterized in that: The inner layer tube (1) and the outer layer tube (3) are both PVC tubes.

4. The three-wire parallel-wound fiber-reinforced hose according to claim 1, characterized in that: The fiber filaments of the fiber layer (2) have a diameter of 8-9 microns.

5. The three-wire parallel-wound fiber-reinforced hose according to claim 1, characterized in that: The inner wall of the inner layer tube (1) is coated with a high temperature resistant coating, and the high temperature resistant coating is a silicon carbide coating.

Images