A flexible pipe

Abstract

The utility model provides a kind of flexible pipe fitting, the utility model includes flexible pipe fitting body, clamping sleeve, hexagonal lock cap, nut and connecting inner lining pipe fitting, nut is fixedly arranged in the middle part of the outside of flexible pipe fitting body, the outside of flexible pipe fitting body is fixedly provided with first flange, two first flanges are symmetrically arranged in the two sides of nut, the outside of one end of hexagonal lock cap is fixedly provided with second flange, first bolt hole is set up on first flange, second bolt hole is set up on second flange, first flange and second flange are fixedly connected by fixed bolt, fixed bolt passes through first bolt hole and second bolt hole, the surface on the side close to second flange of first flange is fixedly provided with magnet one, the surface on the side close to first flange of second flange is fixedly provided with magnet two, magnet one and magnet two are magnetically attracted.The utility model can strengthen connection stability and dismounting convenience, increase inner lining and anti-sticking coating optimize pipe body performance.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings technology, and in particular to a flexible pipe fitting. Background Technology

[0002] Pipe fittings are a collective term for components in pipeline valve systems that serve functions such as connection, control, direction change, flow diversion, sealing, and support. Flexible pipe fittings, as key connecting components in pipeline systems, primarily address the vibration buffering, angle adjustment, and displacement compensation problems that rigid pipe fittings (such as steel pipes and rigid plastic pipes) cannot handle, and are widely used in the fluid transport field.

[0003] The prior art discloses a flexible pipe fitting with application number 202022345137.4, comprising a flexible pipe fitting body, which is a tee or keel structure. The flexible pipe fitting body has at least one flexible pipe connection end, which is provided with a hexagonal locking cap and a retaining sleeve. The flexible pipe connection end has a conical tube and a first externally threaded tube. The outer diameter of the conical tube gradually increases from the outside to the inside. The first externally threaded tube surrounds the conical tube with a gap between them, and the length of the first externally threaded tube is less than the length of the conical tube. The flexible pipe to be connected is fitted onto the outer wall of the conical tube. The retaining sleeve is fitted onto the flexible pipe and abuts against the end face of the first externally threaded tube. The inner diameter of the retaining sleeve is less than the inner diameter of the first externally threaded tube. The inner wall of the retaining sleeve is frustoconical in shape matching the shape of the conical tube. The hexagonal locking cap is fitted onto the retaining sleeve and the first externally threaded tube, and the hexagonal locking cap is threadedly connected to the first externally threaded tube. The hexagonal locking cap engages with the retaining sleeve. This utility model allows the flexible pipe to be removed without tools, the flexible pipe is not easily damaged, and it can be reused. However, existing technologies still suffer from the problem of lacking a positioning auxiliary structure. During flange connection, bolt holes are prone to misalignment, requiring repeated adjustments to achieve proper fixation. This is especially problematic in confined installation spaces, significantly increasing assembly and disassembly time and operational difficulty. Furthermore, the absence of pipe reinforcement or internal lining protection makes the pipe susceptible to collapse in negative pressure environments (such as vacuum pump pipelines and drainage systems), leading to obstructed fluid transport. Additionally, prolonged exposure to tensile or bending stress can cause permanent deformation of the pipe, shortening its service life. Therefore, we propose a flexible pipe fitting to address these issues. Utility Model Content

[0004] To address the shortcomings mentioned above, this utility model provides a flexible pipe fitting that enhances connection stability and ease of assembly and disassembly, and optimizes pipe performance by adding an inner lining and an anti-stick coating.

[0005] To solve the above problems, the technical solution provided by this utility model is as follows:

[0006] A flexible pipe fitting includes a flexible pipe fitting body, a clamping sleeve, a hexagonal locking cap, and a nut. The nut is fixedly disposed on the outer middle of the flexible pipe fitting body. The fitting also includes a connecting inner liner fitting. A first flange is fixedly disposed on the outer side of the flexible pipe fitting body. Two first flanges are symmetrically disposed on both sides of the nut. A second flange is fixedly disposed on the outer side of one end of the hexagonal locking cap. A first bolt hole is formed on the first flange, and a second bolt hole is formed on the second flange. The first flange and the second flange are fixedly connected by a fixing bolt passing through the first bolt hole and the second bolt hole. A magnet is fixedly disposed on the surface of the first flange near the second flange, and a magnet is fixedly disposed on the surface of the second flange near the first flange. The magnet and the magnet are magnetically attracted to each other.

[0007] Furthermore, the two ferrules are symmetrically installed on both sides of the flexible tube body. The outer wall of the flexible tube body is provided with thread one, and the outer wall of the ferrule is provided with thread two. The hexagonal locking cap is threaded to both thread one and thread two.

[0008] Furthermore, the flexible tube body and the ferrule are provided with connecting inner lining tubes, and a sealing ring is provided at the connection between the left and right connecting inner lining tubes.

[0009] Furthermore, one end of the ferrule is engaged with the connecting inner lining tube.

[0010] Furthermore, the plurality of magnets one and the plurality of magnets two are all distributed in a ring structure.

[0011] Furthermore, the inner wall of the connecting inner liner fitting is uniformly coated with a polytetrafluoroethylene anti-stick coating.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The first flange and the second flange are attracted by magnets 1 and 2 distributed in a ring, which can automatically achieve flange docking and positioning, quickly align the bolt holes, and eliminate the need for repeated adjustments, greatly improving the efficiency of disassembly and assembly; with the double fixing of the fixing bolts, the magnetic pre-tightening force and the bolt tightening force are combined to resist loosening caused by pipeline vibration, enhance the structural stability of the connection, and solve the problems of difficult flange positioning and easy loosening in the existing technology.

[0014] 2. During disassembly and assembly, magnetic adsorption helps maintain the relative position of the parts, while bolt connection ensures connection strength. The combination of the two makes disassembly and assembly more convenient and efficient, reduces the difficulty of maintenance and replacement, and saves time and costs.

[0015] 3. The added connecting inner lining fittings enhance the structural strength and pressure resistance of the pipe body, while the polytetrafluoroethylene anti-stick coating on its inner wall effectively prevents the medium from adhering and depositing inside the pipe, reducing the risk of pipeline blockage. At the same time, it improves the adaptability of the fittings to different media and extends their service life.

[0016] In summary, this type of flexible pipe fitting has wide applicability, addressing the issues raised in the background section regarding the lack of a positioning auxiliary structure in existing technologies. These issues lead to misalignment of bolt holes during flange connection, requiring repeated adjustments for final fixation, especially in confined installation spaces, significantly increasing assembly and disassembly time and operational difficulty. Furthermore, the absence of pipe reinforcement or internal lining protection structures makes the pipe prone to collapse in negative pressure environments (such as vacuum pump pipelines and drainage systems), obstructing fluid transport. Additionally, long-term tensile or bending stress can cause permanent deformation of the pipe, shortening its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the first flange of this utility model.

[0019] Figure 3 This is a side view of the second flange of this utility model.

[0020] Explanation of key component symbols:

[0021] 1-Flexible pipe body, 101-Thread 1, 2-Compression sleeve, 201-Thread 2, 3-Connecting inner liner pipe fitting, 4-Hexagonal locking cap, 5-Nut, 6-First flange, 601-First bolt hole, 7-Second flange, 701-Second bolt hole, 8-Fixing bolt, 9-Sealing ring, 10-Magnet 1, 11-Magnet 2. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples, but the examples given are not intended to limit the present utility model.

[0023] like Figures 1-3 As shown, the embodiment of this utility model includes a flexible pipe body 1, a clamping sleeve 2, a connecting inner liner pipe 3, a hexagonal locking cap 4, and a nut 5. The flexible pipe body 1 serves as the basic frame of the pipe, with a nut 5 fixedly installed at the center of its outer side. Thread 101 is machined on the outer wall of the flexible pipe body 1, providing a connection base for the hexagonal locking cap 4. The clamping sleeves 2 are symmetrically installed on both sides of the flexible pipe body 1, forming a complete conveying channel with the flexible pipe body 1 and the clamping sleeves 2.

[0024] The connecting inner liner fitting 3 is located inside the flexible pipe body 1 and the ferrule 2. The connecting inner liner fitting 3 enhances the overall strength of the pipe and protects the flexible pipe body 1 and the ferrule 2. A sealing ring 9 is set at the connection of the two connecting inner liner fittings 3 on the left and right sides to ensure that the conveyed medium will not leak from the splice. The inner wall of the connecting inner liner fitting 3 is uniformly coated with polytetrafluoroethylene anti-stick coating, which can reduce the residue of the conveyed medium (especially viscous or easily adhering substances) on the pipe wall and reduce the flow resistance.

[0025] Two clamping sleeves 2 are symmetrically installed on both sides of the flexible pipe body 1. The outer wall of the clamping sleeve 2 is provided with thread 201, which matches the inner wall thread of the hexagonal locking cap 4. One end of the clamping sleeve 2 is engaged with the connecting inner lining pipe 3 to achieve positioning and fixation of the inner lining pipe 3 and prevent it from shifting during transportation.

[0026] The hexagonal locking cap 4 is threaded to engage with both thread 101 on the flexible pipe body 1 and thread 201 on the ferrule 2. Tightening the hexagonal locking cap 4 secures the ferrule 2 to the flexible pipe body 1, enhancing the stability of the connection. A second flange 7 is fixedly installed on the outer side of one end of the hexagonal locking cap 4, providing an interface for connecting the pipe to external equipment.

[0027] Two first flanges 6 are fixedly installed on the outer side of the flexible pipe body 1, and the two first flanges 6 are symmetrically distributed on both sides of the nut 5. The first flange 6 has a first bolt hole 601, and the second flange 7 has a second bolt hole 701. The two are rigidly connected by fixing bolts 8 passing through the corresponding bolt holes. A magnet 10 is fixedly installed on the surface of the first flange 6 near the second flange 7, and a magnet 21 is fixedly installed at the corresponding position of the second flange 7. The magnet 10 and the magnet 21 are magnetically attracted (multiple magnets 10 are distributed in a ring structure, and multiple magnets 21 are distributed in a ring structure). Pre-positioning can be achieved before the fixing bolts 8 are connected, which facilitates the installation of the fixing bolts 8 through the holes.

[0028] All electrical components mentioned in the text are electrically connected to an external controller and power supply, and the controller can be a conventional known device such as a computer that provides control.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible pipe fitting, comprising a flexible pipe fitting body (1), a clamping sleeve (2), a hexagonal locking cap (4), and a nut (5), wherein the nut (5) is fixedly disposed on the outer middle part of the flexible pipe fitting body (1), characterized in that, It also includes a connecting inner lining pipe fitting (3). A first flange (6) is fixedly provided on the outer side of the flexible pipe fitting body (1). Two first flanges (6) are symmetrically arranged on both sides of the nut (5). A second flange (7) is fixedly provided on the outer side of one end of the hexagonal lock cap (4). A first bolt hole (601) is provided on the first flange (6). A second bolt hole (701) is provided on the second flange (7). The first flange (6) and the second flange (7) are fixedly connected by a fixing bolt (8). The fixing bolt (8) passes through the first bolt hole (601) and the second bolt hole (701). A magnet one (10) is fixedly provided on the surface of the first flange (6) near the second flange (7). A magnet two (11) is fixedly provided on the surface of the second flange (7) near the first flange (6). The magnet one (10) and the magnet two (11) are magnetically attracted to each other.

2. A flexible tubular fitting as described in claim 1, characterized in that, Two of the aforementioned sleeves (2) are symmetrically installed on both sides of the flexible pipe body (1). The outer wall of the flexible pipe body (1) is provided with thread one (101), and the outer wall of the sleeve (2) is provided with thread two (201). The hexagonal locking cap (4) is threadedly connected to both thread one (101) and thread two (201).

3. A flexible tubular fitting as described in claim 2, characterized in that, The flexible tube body (1) and the sleeve (2) are provided with the connecting inner lining tube (3), and the connection points of the left and right connecting inner lining tubes (3) are provided with sealing rings (9).

4. A flexible tubular fitting as described in claim 3, characterized in that, One end of the ferrule (2) is engaged with the connecting inner lining pipe fitting (3).

5. A flexible tubular fitting as described in claim 4, characterized in that, The plurality of magnets one (10) and the plurality of magnets two (11) are all distributed in a ring structure.

6. A flexible tubular fitting as described in claim 5, characterized in that, The inner wall of the connecting inner lining pipe fitting (3) is uniformly coated with a polytetrafluoroethylene anti-stick coating.

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