Curve elastic double-hot-melting pipe fitting

Abstract

The utility model relates to the technical field of hot-melting pipe fittings, in particular to a curve elastic double-hot-melting pipe fitting which comprises a bending pipe and a hot-melting pipe connected with the two ends of the bending pipe in a hot-melting mode, extension pipes are arranged at the two ends of the bending pipe, channels penetrating through the extension pipes are formed in the ends of the bending pipe, a wear-resisting sleeve is arranged on the outer wall of the hot-melting pipe in a sleeved mode, and an inner pipe is arranged on the inner wall of the hot-melting pipe. According to the curve elastic double-hot-melting pipe fitting, the extension pipe with the mounting groove and the bending pipe with the corrugated groove are combined, the hot-melting pipe with the inner pipe is matched with the mounting groove in an inserted mode, under the matching of the bending pipe, multiple regions of connection between the two hot-melting pipes and an external pipeline are increased, the curve elastic double-hot-melting pipe fitting is not affected by deformation extrusion, and the service life is prolonged; the wear-resistant sleeve with the limiting ring and the outer wall of the hot melting pipe are arranged for protection matching, the influence of external friction damage is reduced, the end of the hot melting pipe is matched with the corresponding pipeline in a welding mode through heating of the hot melting gun, and the combination tightness of the hot melting pipe and the extension pipe is improved through matching of the mounting groove, so that water passing is not affected by hindrance.

Description

Technical Field

[0001] This utility model relates to the field of hot melt pipe fittings technology, specifically a curved elastic double hot melt pipe fitting. Background Technology

[0002] Curved elastic double hot-melt pipe fittings are a special connector with multiple powerful functions such as plastic load-bearing capacity, variable flexibility, double fusion protection, and socket positioning, and are suitable for curved elastic vector aluminum alloy lined plastic composite pipe systems.

[0003] Utility model patent application CN209385887U discloses a reinforced double-sided hot-melt pipe fitting, comprising a pipe fitting body, a first outer ring wall pipe, a second outer ring wall pipe, an inner ring wall pipe, a metal bushing, a venting groove, and a hot-melt socket; wherein the gap formed between the first outer ring wall pipe, the second outer ring wall pipe, and the inner ring wall pipe forms the hot-melt socket, the outer walls of the first outer ring wall pipe and the second outer ring wall pipe are provided with venting grooves, and the inner layer of the inner ring wall pipe is fitted with a metal bushing;

[0004] The above technical solution involves a double-sided connection between the fittings and the pipe, resulting in a large connection area. This prevents oxidation and corrosion of the metal layer in the plastic-metal composite pipe and separation of the composite pipe layers due to aging of the hot melt adhesive layer. The metal bushing on the inner wall of the inner liner can stabilize the shape of the inner wall of the plastic pipe during hot melting, preventing softening of the plastic inner wall and subsequent shrinkage. However, the pipe material tends to accumulate during the melting process, affecting the connection effect and water flow capacity. When the fittings are connected, they may twist due to not being on the same horizontal plane, resulting in large deformation and affecting long-term use. External expansion joints occupy materials, increase costs, and are inconvenient for installation and assembly. Utility Model Content

[0005] The purpose of this invention is to provide a curved elastic double-thermal-melting pipe fitting to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A curved elastic double hot-melt pipe fitting includes a flexible tube and a hot-melt pipe that is hot-melt connected at both ends of the flexible tube. Both ends of the flexible tube are provided with extension tubes. The outer ends of the extension tubes are provided with mounting grooves. The end of the flexible tube is provided with a channel that penetrates the extension tube. A wear-resistant sleeve is fitted on the outer wall of the hot-melt pipe, and an inner tube is provided on the inner wall of the hot-melt pipe.

[0008] Furthermore, the outer diameter of the extended tube is larger than the outer diameter of the flexible tube, and the extended tube and the flexible tube are integrally formed.

[0009] In this invention, the combination of the extension tube and the flexible tube helps to create multiple connection areas after the two hot melt tubes are assembled and installed, without affecting the overall assembly. Both the flexible tube and the extension tube are made of polyurethane material, which has toughness and pressure resistance.

[0010] Specifically, the flexible tube has corrugated grooves on its outer wall, and the corrugated grooves are distributed at equal intervals.

[0011] In this invention, the combination of multiple corrugated grooves increases the contact area of ​​the outer wall of the flexible tube, thereby enabling the flexible tube to bend and deform, which is helpful for multi-directional connection and adjustment.

[0012] It should be noted that the inner diameter of the mounting groove is adapted to the wall thickness of the hot melt pipe, and the end of the hot melt pipe is inserted into the mounting groove and fixed by hot melt bonding.

[0013] In this invention, with the help of the mounting groove, the end of the hot melt pipe can be heated by the hot melt gun to achieve a hot melt connection, which increases the tightness of the assembly and reduces the impact of leakage.

[0014] Furthermore, the inner diameter of the wear-resistant sleeve is adapted to the outer diameter of the hot-melt pipe, the length of the wear-resistant sleeve is less than the length of the hot-melt pipe, and the distance between the end of the wear-resistant sleeve and the end of the hot-melt pipe is adapted to the depth of the mounting groove.

[0015] In this invention, the wear-resistant sleeve is made of EPDM rubber, which is resistant to ultraviolet rays and oxidation, and is conducive to long-term use in the external environment. It provides continuous protection for the internal hot melt tube. The outer end of the hot melt tube is heated by a hot melt gun and fused with the heated installation groove, which reduces the accumulation of pipe material during the melting process, thus reducing the impact on the connection effect and water flow capacity.

[0016] Secondly, the outer wall of the wear-resistant sleeve is provided with several limiting rings, which are distributed at equal intervals, and the limiting rings and the wear-resistant sleeve are integrally formed.

[0017] In this invention, the cooperation of multiple limiting rings increases the friction force, facilitates the provision of a point of force, and enables the combined installation of the heat-melting tube with a wear-resistant sleeve and the extension tube.

[0018] It is worth adding that the outer diameter of the inner tube is adapted to the inner diameter of the hot melt tube, the length of the inner tube is adapted to the length of the hot melt tube, and the outer wall of the inner tube is bonded and fixed to the hot melt tube.

[0019] In this invention, the inner tube is made of fluororubber, which has stable chemical properties, is resistant to high temperatures and corrosion, facilitates the transport of gas and liquid in the inner tube, reduces the impact of corrosion on the hot melt tube, and increases the overall service life.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model combines an extended tube with an installation groove and a flexible tube with a corrugated groove, and the hot melt tube with an inner tube is inserted into the installation groove. The inner tube is connected to the channel. With the cooperation of the flexible tube, the connection between the two hot melt tubes and the external pipeline is increased to multiple areas, which is not affected by deformation and compression, and the service life is extended.

[0022] 2. This utility model uses a wear-resistant sleeve with a limiting ring to protect the outer wall of the hot melt pipe, reducing the impact of external friction damage. The end of the hot melt pipe is heated by a hot melt gun and fused with the corresponding pipe. The fit of the mounting groove increases the tightness of the combination of the hot melt pipe and the extension pipe, which helps to ensure that water flow is not affected. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram showing the separation state of the heat-fusion tube and the flexible tube of this utility model;

[0025] Figure 3 This is a schematic diagram of the flexible tube structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Flexible tube; 10. Extended tube; 100. Mounting groove; 11. Channel; 12. Corrugated groove;

[0029] 2. Hot melt pipe; 20. Wear-resistant sleeve; 200. Limiting ring; 21. Inner tube. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4 This embodiment provides a technical solution:

[0032] A curved elastic double heat-fusion pipe fitting includes a flexible tube 1 and a heat-fusion pipe 2 that is heat-fused to both ends of the flexible tube 1. An extension tube 10 is provided at both ends of the flexible tube 1. The outer diameter of the extension tube 10 is larger than the outer diameter of the flexible tube 1. The extension tube 10 and the flexible tube 1 are integrally formed.

[0033] In this utility model, the cooperation between the extension tube 10 and the flexible tube 1 helps to create multiple connection areas after the two hot melt tubes 2 are assembled and installed, without affecting the overall assembly. Both the flexible tube 1 and the extension tube 10 are made of polyurethane material, which has toughness and pressure resistance.

[0034] Furthermore, the outer wall of the flexible tube 1 is provided with corrugated grooves 12, which are distributed at equal intervals.

[0035] In this invention, the cooperation of multiple corrugated grooves 12 increases the contact area of ​​the outer wall of the flexible tube 1, thereby enabling the flexible tube 1 to bend and deform, which is helpful for multi-directional connection and adjustment.

[0036] Specifically, each of the outer ends of the extension tube 10 is provided with an installation groove 100. The inner diameter of the installation groove 100 is adapted to the wall thickness of the hot melt tube 2. The end of the hot melt tube 2 is inserted into the installation groove 100 and fixed by hot melt bonding.

[0037] In this invention, with the cooperation of the mounting groove 100, the ends of the hot melt pipe 2 can be connected by hot melt welding through the hot melt gun, which increases the tightness of the assembly and reduces the impact of leakage.

[0038] It should be noted that the flexible tube 1 has a channel 11 that passes through the extension tube 10 at its end, and a wear-resistant sleeve 20 is fitted on the outer wall of the hot melt tube 2. The inner diameter of the wear-resistant sleeve 20 is adapted to the outer diameter of the hot melt tube 2, the length of the wear-resistant sleeve 20 is less than the length of the hot melt tube 2, and the distance between the end of the wear-resistant sleeve 20 and the end of the hot melt tube 2 is adapted to the depth of the mounting groove 100.

[0039] In this utility model, the wear-resistant sleeve 20 is made of EPDM rubber, which is resistant to ultraviolet rays and oxidation, and is conducive to long-term use in the external environment. It continuously protects the internal hot melt tube 2. The outer end of the hot melt tube 2 is heated by a hot melt gun and fused with the heated mounting groove 100, which reduces the accumulation of pipe material during the melting process, thus reducing the impact on the connection effect and water flow capacity.

[0040] Furthermore, the outer wall of the wear-resistant sleeve 20 is provided with several limiting rings 200, which are evenly distributed and are integrally formed with the wear-resistant sleeve 20.

[0041] In this utility model, the cooperation of multiple limiting rings 200 increases the friction force, facilitates the provision of a point of force, and enables the combined installation of the heat-melting tube 2 with the wear-resistant sleeve 20 and the extension tube 10.

[0042] Specifically, the inner wall of the heat fusion tube 2 is provided with an inner tube 21, the outer diameter of the inner tube 21 is adapted to the inner diameter of the heat fusion tube 2, the length of the inner tube 21 is adapted to the length of the heat fusion tube 2, and the outer wall of the inner tube 21 is bonded and fixed to the heat fusion tube 2.

[0043] In this invention, the inner tube 21 is made of fluororubber, which has stable chemical properties, is resistant to high temperature and corrosion, facilitates the transport of gas and liquid in the inner tube 21, reduces the corrosive effect on the hot melt tube 2, and increases the overall service life.

[0044] Among them, the combination of the hot-melt pipe 2 with inner tube 21 and the flexible pipe 1 with extension tube 10 increases the connection strength and bearing capacity. The axial expansion displacement of the pipe is absorbed by the flexible structure, eliminating the need for expansion joints and strengthening the plastic load of the pipe structure during flexural deformation.

[0045] In this embodiment, when using the curved elastic double hot melt fitting, firstly, the extension tube 10 with the mounting groove 100 and the flexible tube 1 with the corrugated groove 12 are combined and fixed. Then, the hot melt tube 2 with the inner tube 21 is combined and installed with the wear-resistant sleeve 20 with the limit ring 200. Then, one of the hot melt tubes 2 protruding from the wear-resistant sleeve 20 is heated by a hot melt gun and hot melted with the inside of the mounting groove 100 before being inserted and fitted to increase the stability of the combination.

[0046] With the cooperation of the flexible tube 1 and the extended tube 10, the two hot melt tubes 2 can be connected in multiple areas to reduce the impact of deformation on long-term use and prevent air and liquid leakage. The outer wall of the other end of the hot melt tube 2 is heated by a hot melt gun and fused with the external pipeline.

Claims

1. A curved elastic dual hot-melt pipe fitting, comprising a flex pipe (1) and a hot-melt pipe (2) hot-melt connected at both ends of the flex pipe (1), characterized in that: The flexible pipe (1) is provided with an extension pipe (10) at both ends, the outer end of the extension pipe (10) is provided with a mounting groove (100), the end of the flexible pipe (1) is provided with a channel (11) penetrating the extension pipe (10), the outer wall of the hot melt pipe (2) is provided with a wear-resistant sleeve (20), and the inner wall of the hot melt pipe (2) is provided with an inner pipe (21).

2. Curvilinear elastomeric dual hot-melt tubing according to claim 1, characterized in that: The outer diameter of the extension pipe (10) is greater than the outer diameter of the flexible pipe (1), and the extension pipe (10) and the flexible pipe (1) are an integral molding structure.

3. The curvilinear elastomeric dual hot-melt tubing of claim 1, wherein: The outer wall of the flexible pipe (1) is provided with a corrugated groove (12), and the corrugated grooves (12) are distributed at equal intervals.

4. The curvilinear elastomeric dual hot-melt tubing of claim 1, wherein: The inner diameter of the mounting groove (100) is matched with the thickness of the pipe wall of the hot melt pipe (2), the end of the hot melt pipe (2) is inserted into the mounting groove (100) in a matching mode, and is fixed by hot melt adhesion.

5. The curvilinear elastomeric dual hot-melt tubing of claim 1, wherein: The inner diameter of the wear-resistant sleeve (20) is matched with the outer diameter of the hot melt pipe (2), the length of the wear-resistant sleeve (20) is less than the length of the hot melt pipe (2), and the distance between the end of the wear-resistant sleeve (20) and the end of the hot melt pipe (2) is matched with the depth of the mounting groove (100).

6. The curvilinear elastomeric dual hot-melt tubing of claim 1, wherein: The outer wall of the wear-resistant sleeve (20) is provided with a plurality of limiting rings (200), the limiting rings (200) are distributed at equal intervals, and the limiting rings (200) and the wear-resistant sleeve (20) are an integral molding structure.

7. The curvilinear elastomeric dual hot-melt tubing of claim 1, wherein: The outer diameter of the inner pipe (21) is matched with the inner diameter of the hot melt pipe (2), the length of the inner pipe (21) is matched with the length of the hot melt pipe (2), and the outer wall of the inner pipe (21) is adhesively fixed with the hot melt pipe (2).

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