Pressure-resistant PVC pipe fitting

Abstract

The utility model discloses a pressure-resistant PVC pipe fitting, which belongs to the technical field of PVC pipe fittings, and comprises a PVC outer pipe, a PVC inner pipe, a pressure-resistant core layer and a support assembly, the pressure-resistant core layer is arranged between the PVC outer pipe and the PVC inner pipe, the pressure-resistant core layer comprises a carbon fiber reinforced layer and a hydrogenated nitrile rubber buffer layer, the support assembly is arranged in the PVC inner pipe, and the support assembly is arranged between the PVC outer pipe and the PVC inner pipe. The supporting assembly comprises a plurality of supporting strips fixedly connected to the inner surface of the PVC inner pipe, the supporting strips are arranged in the length direction of the PVC inner pipe and annularly distributed in the PVC inner pipe, and one side of each supporting strip is fixedly connected with an arc-shaped supporting plate. Through the arrangement of the compression-resistant core layer and the supporting assembly, the impact resistance, the tensile resistance and the compression resistance of the PVC pipe fitting can be enhanced, when the PVC pipe fitting is extruded by a heavy object, the impact force can be buffered and reduced, the PVC pipe fitting is prevented from being damaged due to stress deformation, and the protection effect of the PVC pipe fitting on an electric wire is improved.

Description

Technical Field

[0001] This utility model belongs to the field of PVC pipe fittings technology, and specifically relates to a pressure-resistant PVC pipe fitting. Background Technology

[0002] PVC pipes are made by hot-pressing polyvinyl chloride resin, stabilizers, and lubricants, and are the earliest type of plastic pipe developed and applied. A large number of PVC pipe fittings are frequently used in building decoration.

[0003] Most PVC pipe fittings currently available have simple structures. When PVC pipe fittings are laid on the ground or underground, they may be squeezed whenever heavy objects pass by. Over time, the PVC pipe fittings are prone to deformation and damage. At the moment the PVC pipe fittings are compressed, it may even damage the wires inside the PVC pipe fittings. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure-resistant PVC pipe fitting to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant PVC pipe fitting, comprising a PVC outer pipe, a PVC inner pipe, a pressure-resistant core layer, and a support assembly, wherein the pressure-resistant core layer is disposed between the PVC outer pipe and the PVC inner pipe, the pressure-resistant core layer comprising a carbon fiber reinforcement layer and a hydrogenated nitrile rubber buffer layer, wherein there are two carbon fiber reinforcement layers, the two carbon fiber reinforcement layers being fixedly connected to the inner surface of the PVC outer pipe and the outer surface of the PVC inner pipe respectively, and the hydrogenated nitrile rubber buffer layer filling the space between the two carbon fiber reinforcement layers;

[0006] The support assembly is disposed inside the PVC inner tube. The support assembly includes multiple support strips fixedly connected to the inner surface of the PVC inner tube. The support strips are arranged along the length of the PVC inner tube, and the multiple support strips are distributed in a ring inside the PVC inner tube. An arc-shaped support plate is fixedly connected to one side of each support strip.

[0007] In a preferred embodiment, the outer surface of the PVC outer tube is provided with several rubber reinforcing rings, which are evenly distributed along the length of the PVC outer tube.

[0008] In a preferred embodiment, the outer surface of the PVC outer tube is provided with a Teflon coating.

[0009] In a preferred embodiment, the hydrogenated nitrile rubber buffer layer has multiple annularly distributed cavities inside, and the cavities are filled with a polyurethane foam layer.

[0010] In a preferred embodiment, the hydrogenated nitrile rubber buffer layer is internally fixed with multiple ring-shaped reinforcing nickel wires.

[0011] In a preferred embodiment, a styrene-butadiene rubber layer is fixedly connected to the surface of the arc-shaped support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This pressure-resistant PVC pipe fitting, through the setting of the pressure-resistant core layer, can enhance the impact resistance, tensile strength and compressive strength of the PVC pipe fitting. By adding a polyurethane foam layer, the compressive strength of the pressure-resistant core layer can be further improved, thereby further enhancing the pressure resistance of the PVC pipe fitting. When the PVC pipe fitting is squeezed by heavy objects, it can buffer and reduce the impact force, avoid the PVC pipe fitting from being deformed and damaged by force, and improve the protection effect of the PVC pipe fitting for the wires.

[0014] This pressure-resistant PVC pipe fitting, through the setting of the support component, can reinforce and support the wires inside the PVC pipe fitting. When the PVC pipe fitting is deformed under force, the arc-shaped support plate can always support the wires, avoiding stress concentration in one place and thus preventing damage to the wires. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0017] In the diagram: 1. PVC outer tube; 11. Rubber reinforcing ring; 12. Teflon coating; 2. PVC inner tube; 3. Pressure-resistant core layer; 31. Carbon fiber reinforcing layer; 32. Hydrogenated nitrile rubber buffer layer; 33. Polyurethane foam layer; 34. Reinforcing nickel wire; 4. Support assembly; 41. Support strip; 42. Arc-shaped support plate; 43. Styrene-butadiene rubber layer. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0020] Please see Figure 1-2This utility model provides a pressure-resistant PVC pipe fitting, including a PVC outer pipe 1, a PVC inner pipe 2, a pressure-resistant core layer 3, and a support component 4. The pressure-resistant core layer 3 is disposed between the PVC outer pipe 1 and the PVC inner pipe 2. The pressure-resistant core layer 3 includes a carbon fiber reinforcement layer 31 and a hydrogenated nitrile rubber buffer layer 32. The carbon fiber reinforcement layer 31 has extremely high impact resistance and tensile strength, while the hydrogenated nitrile rubber buffer layer 32 has extremely strong compressive strength. There are two carbon fiber reinforcement layers 31, which are respectively fixedly connected to the inner surface of the PVC outer pipe 1 and the outer surface of the PVC inner pipe 2. The hydrogenated nitrile rubber buffer layer 32 is filled between the two carbon fiber reinforcement layers 31. By setting the pressure-resistant core layer 3, the impact resistance, tensile strength, and compressive strength of the PVC pipe fitting can be enhanced. When the PVC pipe fitting is squeezed by heavy objects, the impact force can be buffered and reduced, preventing the PVC pipe fitting from being deformed and damaged, and improving the protection effect of the PVC pipe fitting for wires.

[0021] Furthermore, the hydrogenated nitrile rubber buffer layer 32 has multiple annularly distributed cavities inside, which are filled with polyurethane foam layers 33. The polyurethane foam layers 33 have extremely high pressure resistance and shock absorption performance. By adding polyurethane foam layers 33, the pressure resistance effect of the pressure-resistant core layer 3 can be further improved, thereby further enhancing the pressure resistance of PVC pipe fittings.

[0022] Furthermore, the outer surface of the PVC outer pipe 1 is provided with several rubber reinforcing rings 11. The rubber reinforcing rings 11 are evenly distributed along the length of the PVC outer pipe 1. The rubber reinforcing rings 11 can provide pressure resistance to the outside of the PVC pipe fitting, making the PVC pipe fitting less prone to deformation under stress.

[0023] Furthermore, the outer surface of the PVC outer pipe 1 is provided with a Teflon coating 12. The Teflon coating 12 has good corrosion resistance and wear resistance. By providing the Teflon coating 12, the corrosion resistance and wear resistance of the PVC pipe fitting can be improved. When the PVC pipe fitting is subjected to heavy pressure, the wear on the PVC pipe fitting can be reduced.

[0024] Furthermore, multiple annularly distributed reinforcing nickel wires 34 are fixedly inserted inside the hydrogenated nitrile rubber buffer layer 32. The reinforcing nickel wires 34 can provide axial reinforcement to the PVC pipe fitting and enhance its bending resistance.

[0025] The support component 4 is installed inside the PVC inner tube 2. The support component 4 includes multiple support bars 41 fixedly connected to the inner surface of the PVC inner tube 2. The support bars 41 are arranged along the length of the PVC inner tube 2, and the multiple support bars 41 are distributed in a ring inside the PVC inner tube 2. An arc-shaped support plate 42 is fixedly connected to one side of the support bar 41. By setting the support component 4, the wires inside the PVC pipe can be reinforced and supported. When the PVC pipe is deformed under stress, the arc-shaped support plate 42 can always support the wires, avoiding stress concentration at a certain point and damage to the wires.

[0026] Furthermore, a styrene-butadiene rubber layer 43 is fixedly connected to the surface of the arc-shaped support plate 42. The styrene-butadiene rubber layer 43 can play a buffering and protective role between the arc-shaped support plate 42 and the wire, preventing the insulation of the wire from being squeezed and damaged.

[0027] The working principle and usage process of this utility model are as follows: First, by setting the pressure-resistant core layer 3, the impact resistance, tensile strength and compressive strength of the PVC pipe fitting can be enhanced. When the PVC pipe fitting is squeezed by heavy objects, the impact force can be buffered and reduced, avoiding the PVC pipe fitting from being deformed and damaged, and improving the protection effect of the PVC pipe fitting for the wire. By setting the support component 4, the wire inside the PVC pipe fitting can be reinforced and supported. When the PVC pipe fitting is deformed by force, the arc-shaped support plate 42 can always support the wire, avoiding the stress concentration in a certain place when the wire is under force, which would cause the wire to be damaged.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant PVC pipe fitting, comprising a PVC outer pipe (1), a PVC inner pipe (2), a pressure-resistant core layer (3) and a support assembly (4), characterized in that: The anti-pressure core layer (3) is arranged between the PVC outer tube (1) and the PVC inner tube (2), the anti-pressure core layer (3) comprises a carbon fiber reinforcing layer (31) and a hydrogenated nitrile rubber buffer layer (32), the carbon fiber reinforcing layer (31) has two layers, the two layers of the carbon fiber reinforcing layer (31) are fixedly connected to the inner surface of the PVC outer tube (1) and the outer surface of the PVC inner tube (2) respectively, and the hydrogenated nitrile rubber buffer layer (32) is filled between the two layers of the carbon fiber reinforcing layer (31). The support assembly (4) is arranged in the PVC inner tube (2), the support assembly (4) comprises a plurality of support strips (41) fixedly connected to the inner surface of the PVC inner tube (2), the support strips (41) are arranged along the length direction of the PVC inner tube (2), and the plurality of support strips (41) are annularly distributed in the PVC inner tube (2), and one side of the support strip (41) is fixedly connected with an arc-shaped support plate (42).

2. A pressure rated PVC pipe fitting according to claim 1, characterized in that: The PVC outer tube (1) is externally provided with a plurality of rubber reinforcing rings (11), and the rubber reinforcing rings (11) are uniformly distributed along the length direction of the PVC outer tube (1).

3. A pressure rated PVC pipe fitting according to claim 2, characterized in that: The outer surface of the PVC outer tube (1) is provided with a Teflon coating (12).

4. A pressure-rated PVC pipe fitting according to claim 1, characterized in that: A plurality of annularly distributed cavities are arranged in the hydrogenated nitrile rubber buffer layer (32), and the cavities are filled with a polyurethane foam layer (33).

5. A pressure-rated PVC pipe fitting according to claim 1, characterized in that: A plurality of annularly distributed reinforcing nickel wires (34) are fixedly arranged in the hydrogenated nitrile rubber buffer layer (32).

6. A pressure rated PVC pipe fitting according to claim 1, characterized in that: The surface of the arc-shaped support plate (42) is fixedly connected with a butadiene styrene rubber layer (43).

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