Water pipe based on PVC (polyvinyl chloride) inner pipe PET (polyethylene terephthalate) woven layer

Abstract

The utility model discloses a water pipe based on a PVC (polyvinyl chloride) inner pipe and a PET (polyethylene terephthalate) braid layer, which aims to solve the problems of mutual combination of flexibility and rigidity of the water pipe and convenience in connection. The water pipe based on the PVC inner pipe and the PET braid layer comprises the PVC inner pipe, the periphery of the PVC inner pipe is coated with the PET braid layer, the two common ends of the PVC inner pipe and the PET braid layer are connected with a ball valve assembly and a movable nut assembly respectively, the ball valve assembly comprises a ball valve, and a first connecting pipe is arranged in one end of the ball valve; the movable nut assembly comprises a movable nut, one end of the movable nut is provided with a first flange with a reduced diameter, an inner hexagonal nut penetrates through the middle of the first flange, the periphery of the inner hexagonal nut is provided with a second flange, the second flange is attached to the first flange, and the periphery of the inner hexagonal nut is in threaded connection with a second inner threaded pipe sleeve. And a second connecting pipe is mounted between the second internal thread pipe sleeve and the inner hexagon nut.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipes, in particular to a water pipe based on a PVC inner tube and a PET braided layer. Background Art

[0002] At present, the hardness of water pipes, especially those used in gardens and other domestic water pipes, is uncontrollable. Either the PVC hose is too soft or the PPR pipe is too hard. Although there are also coated pipes with a cloth layer on the outer periphery of the PVC hose, it is difficult to control the problem of the PVC hose being too soft. In addition, the connection structure of the existing coated pipes at both ends is complex, which is very prone to technical failures such as water leakage.

[0003] How to improve the degree of control over the softness and hardness of water pipes and improve the convenience and sealing of connections are the subjects of research for those skilled in the art. Utility Model Content

[0004] The utility model aims to provide a water pipe based on a PVC inner tube and a PET braided layer with a wear-resistant surface, controllable hardness, convenient connection and good sealing performance in view of the defects and shortcomings of the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a water pipe based on a PVC inner tube and a PET braided layer, comprising a PVC inner tube, the outer periphery of the PVC inner tube is coated with a PET braided layer, the two ends common to the PVC inner tube and the PET braided layer are respectively connected to a ball valve assembly and a movable nut assembly, the ball valve assembly comprises a ball valve, one end of the ball valve is provided with a first connecting pipe, the end of the first connecting pipe is provided with a first convex ring matching the aperture of the PVC inner tube, the outer side of the first connecting pipe body between the first convex ring and the ball valve is sequentially sleeved with the PVC inner tube, the PET braided layer, the first reduced diameter assembly Aluminum ring; the movable nut assembly includes a movable nut, a first flange with a reduced diameter is provided at one end of the movable nut, the first flange passes through the inner hexagonal nut in the middle, a second flange is provided on the outer periphery of the inner hexagonal nut, the second flange fits the first flange, the outer periphery of the inner hexagonal nut is threadedly connected to the second internally threaded pipe sleeve, a second connecting pipe is installed between the second internally threaded pipe sleeve and the inner hexagonal nut, a second convex ring matching the aperture of the PVC inner pipe is provided on the end of the second connecting pipe, and the outer side of the second connecting pipe body between the second convex ring and the inner hexagonal nut is sequentially sleeved with the PVC inner pipe, the PET braided layer, and the second reduced diameter aluminum ring. This water pipe based on PVC inner tube and PET braided layer uses a soft PVC inner tube as a base material, and uses hard PET material to form a PET braided layer. As a wear-resistant layer, it not only improves the hardness of the soft PVC inner tube, but also combines the outer side of the first connecting tube body to sequentially sleeve the PVC inner tube, PET braided layer, and the first reduced diameter aluminum ring, and the outer side of the second connecting tube body to sequentially sleeve the PVC inner tube, PET braided layer, and the second reduced diameter aluminum ring. The metal shrinkage properties of the first reduced diameter aluminum ring and the second reduced diameter aluminum ring are used to conveniently and tightly connect the PVC inner tube, PET braided layer, the first connecting tube, and the second connecting tube together, which is not only convenient to connect, but also has good sealing performance. The first convex ring and the second convex ring form an interference fit with the PVC inner tube to prevent internal water leakage.

[0006] The first connecting pipe and the second connecting pipe have the same structure. The second connecting pipe is divided into two sections, namely a first connecting section and a second connecting section. The first connecting section is connected to the second convex ring, and a sealing ring is provided on the outer periphery of the second connecting section. The inner hole of the second connecting section is larger than the inner hole of the first connecting section, and the flow rate inside the water pipe is increased by reducing the diameter of the inner hole.

[0007] The sealing ring on the outer periphery of the second connecting section is tightly connected to the inner hole of the hexagonal nut; the first connecting pipe is divided into two sections, namely the third connecting section and the fourth connecting section, the third connecting section is connected to the first convex ring, and the sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve, thereby improving the sealing performance of the water pipe connection.

[0008] The sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve, and the outer wall of the ball valve is threadedly connected to the first internally threaded pipe sleeve. While the first internally threaded pipe sleeve is threadedly screwed to the ball valve, the first connecting pipe is axially pushed to tightly connect the ball valve. The axial thrust formed by the first internally threaded pipe sleeve threadedly screwed to the ball valve further improves the sealing performance of the water pipe connection.

[0009] The first internally threaded pipe sleeve is connected to a first protective rubber sleeve, which is sleeved on the outside of the PET braided layer to prevent damage to the connection at the end of the water pipe. One end of the second internally threaded pipe sleeve is connected to a second protective rubber sleeve, which is sleeved on the outside of the PET braided layer to prevent damage to the connection at the end of the water pipe.

[0010] The switch of the ball valve is controlled by a handle, and an external thread is arranged at the outer end of the ball valve, so that the connection performance of the water pipe is improved on the basis of facilitating control.

[0011] By adopting the above technical scheme, the utility model has the beneficial effects of: using a soft PVC inner tube as a base material, and using a hard PET material to form a PET braided layer as a wear-resistant layer, not only the hardness of the soft PVC inner tube is improved, but also the PVC inner tube, PET braided layer, and first reduced diameter aluminum ring are sequentially sleeved on the outer side of the first connecting tube body, and the PVC inner tube, PET braided layer, and second reduced diameter aluminum ring are sequentially sleeved on the outer side of the second connecting tube body, and the PVC inner tube, PET braided layer, and second reduced diameter aluminum ring are conveniently and tightly connected together by utilizing the metal shrinkage performance of the first reduced diameter aluminum ring and the second reduced diameter aluminum ring, which is not only convenient to connect, but also has good sealing performance. The first convex ring and the second convex ring form an interference fit with the PVC inner tube to prevent internal water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] FIG1 is a schematic diagram of a three-dimensional structure of a water pipe based on a PVC inner tube and a PET braided layer according to the present invention;

[0014] FIG2 is a schematic diagram of the exploded installation structure of the ball valve assembly in the utility model;

[0015] FIG3 is a schematic diagram of the exploded installation structure of the movable nut assembly in the utility model;

[0016] FIG. 4 is a schematic diagram of the connection structure between the second connecting pipe and the PVC inner pipe in the present invention. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0018] like Figure 1-4 As shown, a water pipe based on a PVC inner tube and a PET braided layer comprises a PVC inner tube 19, the outer periphery of the PVC inner tube 19 is coated with a PET braided layer 4, the two ends common to the PVC inner tube 19 and the PET braided layer 4 are respectively connected to a ball valve assembly and a movable nut assembly 3, the ball valve assembly comprises a ball valve 2, a first connecting pipe 9 is built into one end of the ball valve 2, a first convex ring 8 matching the aperture of the PVC inner tube 19 is provided at the end of the first connecting pipe 9, and the outer side of the first connecting pipe 9 between the first convex ring 8 and the ball valve 2 is sequentially sleeved with the PVC inner tube 19, the PET braided layer 4, and the first reduced diameter aluminum ring. The movable nut assembly 3 includes a movable nut 14, a first flange 15 with a reduced diameter is provided at one end of the movable nut 14, a hexagonal nut 16 passes through the middle of the first flange 15, a second flange 17 is provided on the outer periphery of the hexagonal nut 16, the second flange 17 fits the first flange 15, the outer periphery of the hexagonal nut 16 is threadedly connected to the second internally threaded pipe sleeve 11, a second connecting pipe 12 is installed between the second internally threaded pipe sleeve 11 and the hexagonal nut 16, a second convex ring 21 matching the aperture of the PVC inner pipe 19 is provided at the end of the second connecting pipe 12, and the outer side of the second connecting pipe 12 body between the second convex ring 21 and the hexagonal nut 16 is sequentially sleeved with the PVC inner pipe 19, the PET braided layer 4, and the second reduced diameter aluminum ring 18.

[0019] As a preferred structure, the first connecting pipe 9 and the second connecting pipe 12 have the same structure. The second connecting pipe 12 is divided into two sections, namely, the first connecting section and the second connecting section. The first connecting section is connected to the second convex ring 21, and a sealing ring 13 is provided on the outer periphery of the second connecting section. The sealing ring 13 on the outer periphery of the second connecting section is tightly connected to the inner hole of the hexagonal nut 16. The first connecting pipe 9 is divided into two sections, namely, the third connecting section and the fourth connecting section. The third connecting section is connected to the first convex ring 8, and the sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve 2, thereby improving the sealing performance of the connection between the first connecting pipe 9 and the second connecting pipe 12 and the PVC inner pipe 19 and the ball valve 2. The sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve 2, and the outer wall of the ball valve 2 is threadedly connected to the first internally threaded pipe sleeve 7. The first internally threaded pipe sleeve 7 is threadedly connected to the ball valve 2 while axially pushing the first connecting pipe 9 to tightly connect to the ball valve 2.

[0020] In order to avoid accidental damage, the first internal threaded sleeve 7 is connected to the first protective rubber sleeve 5, which is sleeved on the outside of the PET braided layer 4. One end of the second internal threaded sleeve 11 is connected to the second protective rubber sleeve 10, which is sleeved on the outside of the PET braided layer 4.

[0021] In order to improve the convenience of connection, the opening and closing of the ball valve 2 is controlled by the handle 1, and the outer end of the ball valve 2 is provided with an external thread 6. The inner hole 20 of the second connecting section is larger than the inner hole of the first connecting section to increase the flow rate inside the water pipe.

[0022] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water pipe based on a PVC inner tube and a PET braided layer, comprising a PVC inner tube (19), characterized in that: The outer periphery of the PVC inner tube (19) is coated with a PET braided layer (4); the two ends of the PVC inner tube (19) and the PET braided layer (4) are respectively connected to a ball valve assembly and a movable nut assembly (3); the ball valve assembly comprises a ball valve (2); a first connecting tube (9) is built into one end of the ball valve (2); a first convex ring (8) matching the aperture of the PVC inner tube (19) is provided at the end of the first connecting tube (9); the outer side of the first connecting tube (9) between the first convex ring (8) and the ball valve (2) is sequentially sleeved with the PVC inner tube (19), the PET braided layer (4), and a first reduced diameter aluminum ring; the movable nut assembly (3) comprises a movable nut (14); a first reduced diameter aluminum ring is provided at one end of the movable nut (14); The flange (15) is provided with a first flange (15), the middle of which passes through a hexagon socket nut (16), a second flange (17) is provided on the outer periphery of the hexagon socket nut (16), the second flange (17) is fitted with the first flange (15), the outer periphery of the hexagon socket nut (16) is threadedly connected to a second internally threaded pipe sleeve (11), a second connecting pipe (12) is installed between the second internally threaded pipe sleeve (11) and the hexagon socket nut (16), a second convex ring (21) matching the aperture of the PVC inner pipe (19) is provided at the end of the second connecting pipe (12), and the outer side of the second connecting pipe (12) between the second convex ring (21) and the hexagon socket nut (16) is sleeved with the PVC inner pipe (19), a PET braided layer (4), and a second reduced diameter aluminum ring (18) in sequence.

2. A water pipe based on PVC inner tube and PET braided layer according to claim 1, characterized in that: The first connecting tube (9) and the second connecting tube (12) have the same structure. The second connecting tube (12) is divided into two sections, namely a first connecting section and a second connecting section. The first connecting section is connected to the second convex ring (21). A sealing ring (13) is provided on the outer periphery of the second connecting section. The inner hole (20) of the second connecting section is larger than the inner hole of the first connecting section.

3. A water pipe based on PVC inner tube and PET braided layer according to claim 2, characterized in that: The sealing ring (13) on the outer periphery of the second connecting section is tightly connected to the inner hole of the hexagonal nut (16); the first connecting pipe (9) is divided into two sections, namely a third connecting section and a fourth connecting section, the third connecting section is connected to the first convex ring (8), and the sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve (2).

4. A water pipe based on PVC inner tube and PET braided layer according to claim 3, characterized in that: The sealing ring on the outer periphery of the fourth connecting section is tightly connected to the inner hole of the ball valve (2), the outer wall of the ball valve (2) is threadedly connected to the first internally threaded pipe sleeve (7), and the first internally threaded pipe sleeve (7) is threadedly connected to the ball valve (2) while axially pushing the first connecting pipe (9) to tightly connect to the ball valve (2).

5. A water pipe based on PVC inner tube and PET braided layer according to claim 4, characterized in that: The first internally threaded pipe sleeve (7) is connected to a first protective rubber sleeve (5), and the first protective rubber sleeve (5) is sleeved on the outside of the PET braided layer (4).

6. The water pipe based on PVC inner tube and PET braided layer according to claim 1, characterized in that: The opening and closing of the ball valve (2) is controlled by the handle (1), and the outer end of the ball valve (2) is provided with an external thread (6).

7. The water pipe based on PVC inner tube and PET braided layer according to claim 1, characterized in that: One end of the second internally threaded pipe sleeve (11) is connected to a second protective rubber sleeve (10), and the second protective rubber sleeve (10) is sleeved on the outside of the PET braided layer (4).

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